This is blue print for mrcp ireland part 2

I can see the MRCPI Part II General Medicine Written Examination Blueprint. Here's a clear summary of what it contains:

MRCPI Part II - General Medicine Written Examination Blueprint

The exam consists of 150 questions distributed across specialties as follows:

Specialty / Science	% of Exam	No. of Questions (out of 150)
Cardiology	10%	15
Dermatology	5%	7-8
Endocrinology & Metabolic Medicine	10%	15
Gastroenterology & Hepatology	10%	15
Immunology & Haematology	10%	15
Infectious Diseases & Genitourinary Medicine	5%	7-8
Neurology, Ophthalmology & Psychiatry	10%	15
Oncology & Palliative Care	5%	7-8
Nephrology	10%	15
Respiratory Medicine	10%	15
Rheumatology	10%	15
Therapeutics & Toxicology	5%	7-8

Key points:

10 specialties carry 10% each (the major ones to focus on)
4 specialties carry 5% each (Dermatology, Infectious Diseases/GU, Oncology/Palliative Care, Therapeutics/Toxicology)
Questions focus on common or important diseases in hospital medical practice
Skills are examined across specialties, not confined to individual ones
Questions cover the sciences underlying medical practice and basic clinical skills

Would you like me to help you create a study plan based on this blueprint, or would you like detailed notes on any specific specialty?

14 days to be precise. Please guide me how to revise

Asking for Preferences

Here is your complete 14-day MRCPI Part II revision plan, built around your profile: 10+ hours/day, full resources available, and weak in 5 key areas.

MRCPI Part II - 14-Day Revision Plan

Strategy Overview

Your weak areas happen to carry a combined 35% of the exam (Neurology/Ophthalmology/Psychiatry 10%, Endocrinology 10%, Gastro 10%, Immunology/Haematology 10%, Dermatology/Infectious/Oncology/Therapeutics 5%). These get priority time in the first 10 days.

Daily structure (10+ hours):

Block	Time	Activity
Morning (3h)	07:00-10:00	Theory - textbook/notes on the day's topic
Mid-morning (2h)	10:00-12:00	Question bank (50 Qs on same topic)
Lunch break	12:00-13:00	Rest, light review of errors
Afternoon (3h)	13:00-16:00	Second topic (lighter/stronger subject)
Evening (2h)	16:00-18:00	Past papers or mixed Qs (50 Qs)
Night review (30 min)	20:00-20:30	Flashcard review / notes consolidation

The 14-Day Schedule

WEEK 1 - Weak Areas First (High-Yield)

Day 1 - Friday June 5 (TODAY)

Focus: Endocrinology & Metabolic Medicine (Part 1)

Morning theory:

Diabetes: types, complications, insulin regimens, HbA1c targets
Thyroid: hypo/hyperthyroidism, thyroiditis, thyroid storm, sick euthyroid
Adrenal: Cushing's, Addison's, phaeochromocytoma

Question bank: 50 Qs on Endocrinology

Afternoon theory:

Pituitary: acromegaly, hyperprolactinaemia, diabetes insipidus, SIADH
MEN syndromes (MEN1, MEN2A, MEN2B)

Evening: 50 mixed Qs past paper style

Day 2 - Saturday June 6

Focus: Endocrinology & Metabolic Medicine (Part 2)

Morning theory:

Calcium metabolism: hypercalcaemia, hypocalcaemia, primary/secondary hyperparathyroidism
Osteoporosis and Paget's disease
Metabolic bone disease

Question bank: 50 Qs endocrinology continued

Afternoon theory:

Lipid disorders, metabolic syndrome
Obesity pharmacology, bariatric surgery indications
Hypoglycaemia work-up

Evening: 50 Qs mixed + review all Endocrinology errors

Day 3 - Sunday June 7

Focus: Gastroenterology & Hepatology (Part 1)

Morning theory:

IBD: Crohn's vs UC - features, complications, extraintestinal manifestations, biologics
Coeliac disease, IBS
Upper GI: peptic ulcer, H. pylori, GORD, Barrett's oesophagus

Question bank: 50 Qs GI

Afternoon theory:

Liver: acute liver failure, hepatitis B and C (serology patterns!), alcoholic liver disease
Cirrhosis: complications - ascites, SBP, HRS, hepatic encephalopathy, varices

Evening: 50 Qs mixed

Day 4 - Monday June 8

Focus: Gastroenterology & Hepatology (Part 2)

Morning theory:

Autoimmune liver disease: PBC, PSC, autoimmune hepatitis - antibody patterns
Wilson's disease, haemochromatosis
Hepatocellular carcinoma screening

Question bank: 50 Qs hepatology

Afternoon theory:

Pancreatitis: acute (severity scoring, Ranson/Glasgow), chronic
Malabsorption, small bowel disease
GI motility disorders

Evening: 50 Qs GI/Hepatology mixed review

Day 5 - Tuesday June 9

Focus: Immunology & Haematology (Part 1)

Morning theory:

Anaemia: iron deficiency, B12/folate, haemolytic, aplastic - differentials and work-up
Haematinics: interpreting ferritin, TIBC, reticulocytes
Sickle cell disease, thalassaemia

Question bank: 50 Qs haematology

Afternoon theory:

Coagulation disorders: haemophilia, VWD, DIC, TTP/HUS
Anticoagulation: heparin, warfarin, DOACs - reversal agents, monitoring
Thrombophilia screen

Evening: 50 Qs mixed

Day 6 - Wednesday June 10

Focus: Immunology & Haematology (Part 2)

Morning theory:

Lymphoma: Hodgkin vs Non-Hodgkin, staging, Reed-Sternberg cells
Leukaemia: ALL, AML, CLL, CML - key distinguishing features
Multiple myeloma: diagnostic criteria, CRAB features

Question bank: 50 Qs haematology/oncology overlap

Afternoon theory:

Immunodeficiency: primary (SCID, CVID, IgA deficiency), secondary (HIV)
Hypersensitivity reactions (Type I-IV) - classic examples for each
Transplant immunology, graft-versus-host disease

Evening: 50 Qs mixed + review weak spots from past 2 days

Day 7 - Thursday June 11

Focus: Neurology, Ophthalmology & Psychiatry (Part 1)

Morning theory:

Stroke: ischaemic vs haemorrhagic, NIHSS, thrombolysis criteria, thrombectomy
TIA: ABCD2 score, management
Epilepsy: classification, anti-epileptics, status epilepticus management

Question bank: 50 Qs neurology

Afternoon theory:

Headache: migraine, cluster, tension, SAH red flags
MS: types, diagnosis (McDonald criteria), DMTs
Movement disorders: Parkinson's, Huntington's, essential tremor

Evening: 50 Qs neurology mixed

WEEK 2 - Complete Coverage + Reinforcement

Day 8 - Friday June 12

Focus: Neurology, Ophthalmology & Psychiatry (Part 2)

Morning theory:

Dementia: Alzheimer's, vascular, Lewy body, FTD - distinguishing features
Neuropathy: peripheral, mononeuritis multiplex, Guillain-Barre, CIDP
Ophthalmology: glaucoma, uveitis, diabetic/hypertensive retinopathy, papilloedema

Question bank: 50 Qs

Afternoon theory:

Psychiatry: depression, bipolar, schizophrenia - diagnostic criteria, pharmacology
Eating disorders, OCD, PTSD - key clinical features
Capacity, consent, Mental Health Act principles

Evening: 50 Qs mixed neuro/psychiatry

Day 9 - Saturday June 13

Focus: Dermatology + Infectious Diseases + Oncology + Therapeutics (5% topics)

Morning theory:

Dermatology: psoriasis, eczema, SLE rash, pemphigus vs pemphigoid, vasculitis rashes
Skin malignancy: melanoma staging, BCC vs SCC vs melanoma
Drug-induced rashes: Stevens-Johnson, toxic epidermal necrolysis, erythema multiforme

Question bank: 50 Qs

Afternoon theory:

Infectious diseases: meningitis (bacterial vs viral CSF), HIV (CD4 counts and infections), TB
Infective endocarditis: Duke criteria, organisms, complications
Therapeutics: drug interactions, P450 inducers/inhibitors, therapeutic drug monitoring
Toxicology: paracetamol OD (NAC), opioid OD, digoxin toxicity, salicylate

Evening: 50 Qs mixed 5% topics

Day 10 - Sunday June 14

Focus: Cardiology (strong area - high yield review)

Morning theory:

ACS: STEMI vs NSTEMI vs UA, troponins, management protocols, complications
Heart failure: HFrEF vs HFpEF, NYHA classification, drugs with mortality benefit
Arrhythmias: AF management (CHADS-VASc, rate vs rhythm), WPW, SVT, VT/VF

Question bank: 50 Qs cardiology

Afternoon theory:

Valvular disease: AS, AR, MS, MR - murmur features, echo findings, surgical indications
Cardiomyopathies: HCM, DCM, restrictive
ECG interpretation: blocks, long QT, Brugada, hypertrophy patterns

Evening: 50 Qs cardiology mixed

Day 11 - Monday June 15

Focus: Nephrology + Respiratory

Morning theory (Nephrology):

AKI: KDIGO staging, causes (pre/intrinsic/post), indications for dialysis
CKD: staging, complications, anaemia of CKD
Glomerulonephritis: nephritic vs nephrotic syndromes, specific patterns

Question bank: 50 Qs nephrology

Afternoon theory (Respiratory):

Asthma: BTS stepwise management, acute severe features, brittle asthma
COPD: GOLD staging, long-term O2 therapy criteria, exacerbation management
Interstitial lung disease: UIP/IPF, sarcoidosis, extrinsic allergic alveolitis
PE: Wells score, CTPA, thrombolysis criteria

Evening: 50 Qs nephrology/respiratory mixed

Day 12 - Tuesday June 16

Focus: Rheumatology

Morning theory:

RA: diagnostic criteria (2010 ACR/EULAR), DMARDs, biologics, extra-articular features
SLE: diagnostic criteria (SLICC), anti-dsDNA, complement, lupus nephritis classes
Spondyloarthropathies: AS, psoriatic arthritis, reactive, enteropathic - HLA associations

Question bank: 50 Qs rheumatology

Afternoon theory:

Crystal arthropathies: gout (urate, colchicine, allopurinol timing), pseudogout (CPPD)
Vasculitis: GCA (temporal arteritis), Wegener's/GPA, PAN - key features
Myositis: polymyositis vs dermatomyositis, anti-Jo1, treatment
Sjögren's, systemic sclerosis (limited vs diffuse)

Evening: 50 Qs mixed + identify remaining gaps

Day 13 - Wednesday June 17

Full Mock Exam Day

Morning (3h): 75-question timed mock paper (past papers or question bank exam mode)

Review session (2h): Detailed analysis of every wrong answer - do NOT just read the answer, understand the reasoning

Afternoon (3h): Second 75-question timed mock paper

Evening (1.5h): Targeted review of any topic that appeared weak across both mocks

This is your most important day. Treat it like the real exam.

Day 14 - Thursday June 18

Consolidation & Final Review

Morning (2h): Review your personal error log / weak topics flagged across the 13 days

Mid-morning (2h): High-yield rapid-fire review:

All antibody patterns (ANA, anti-dsDNA, ANCA, anti-CCP, anti-Scl70, anti-Jo1)
All key drug mechanisms and toxicities
All scoring systems (Wells, CURB-65, CHADS-VASc, Child-Pugh, ABCD2, NIHSS)
All CSF patterns (bacterial, viral, TB, fungal meningitis)
All key serology patterns (Hep B and C)

Afternoon (1.5h): Light 30-question mixed quiz - no new topics

Evening: Rest. Sleep by 9pm. Your brain consolidates during sleep.

Key Cross-Cutting Tips

Question banks:

Use PassMedicine in exam mode (timed, no feedback during), then review all explanations after
Aim for 100 questions/day - the volume is what builds speed and pattern recognition
Keep an error log - a simple notebook noting topic, what you got wrong, and the correct reasoning

For your weak areas specifically:

Endocrinology: master the hormone feedback loops and know all the dynamic tests (short Synacthen, dexamethasone suppression, water deprivation)
Gastro/Hepatology: hepatitis serology is heavily tested - draw the Hep B serology timeline from memory
Haematology: blood film findings are common - know what each condition looks like
Neurology: practice ECG and CSF interpretation alongside clinical scenarios

The night before the exam:

No new topics
Light review of your high-yield summary sheet
Sleep 8 hours

Good luck - 14 days of focused work at this intensity is absolutely enough to pass. The blueprint is on your side; it is a predictable, structured exam.

Tell me how to get most from mcq bof while practicing now

How to Get the Most from MCQ BOFs (Best of Five) While Practising

What a BOF Actually Tests

The MRCPI Part II BOF is not a knowledge recall test - it is a clinical reasoning test. Every question presents a scenario and asks what you would do next, what the diagnosis is, or what the best management is. The examiners are testing whether you think like a senior doctor, not whether you memorised a textbook.

This changes how you should practise.

The 5-Step Method for Every Question

Step 1 - Read the Last Line FIRST

Before reading the clinical stem, read the question being asked. Is it asking for:

A diagnosis?
The next investigation?
The best treatment?
The underlying mechanism?

This tells your brain what to look for as you read the stem. Otherwise you read the whole thing and then realise you need to re-read it with a different focus.

Step 2 - Read the Stem Actively

As you read, pick out the clinical anchors - the details that narrow the diagnosis:

Age and sex
Onset (sudden vs gradual)
Key positive findings
Key negative findings (these are deliberately placed)
Any drug history, travel history, occupation
The one abnormal investigation result

Do not read passively. Every detail in a BOF stem is there for a reason. If you notice something and think "that's odd," it is usually the clue.

Step 3 - Form Your Answer BEFORE Looking at Options

This is the single most important habit. Cover the options, decide what you think the answer is, then look.

Why? Because if you look at options first, distractor answers pull you away from your clinical reasoning. The examiners write options that are plausible and partially correct. If you have already committed to an answer, you are far less likely to be seduced by a confident-sounding wrong option.

Step 4 - Use Elimination, Not Selection

Rather than trying to pick the right answer, eliminate the obviously wrong ones first:

Remove anything that would harm the patient
Remove anything not appropriate to the clinical context
Remove answers that are true in general but not the best answer here

You are then choosing between 2 options at most, which dramatically improves accuracy.

Step 5 - Never Leave a Question Blank

There is no negative marking in MRCPI Part II. If you are unsure, eliminate what you can and commit. A 50/50 guess is worth 0.5 marks on average. Leaving it blank is worth 0.

How to Review Wrong Answers (This Is Where Learning Happens)

Most candidates spend 80% of their time doing questions and 20% reviewing. You should flip this - spend more time on review than on answering.

For every question you get wrong, do this:

1. Identify WHY you got it wrong - there are only 4 reasons:

You did not know the topic (knowledge gap)
You knew the topic but misread the stem (careless error)
You knew the topic but the distractor tricked you (reasoning error)
You second-guessed your correct instinct (confidence error)

Each type needs a different fix. Do not treat all wrong answers the same.

2. For knowledge gaps: Do not just read the answer explanation. Go to the textbook or your notes for that specific topic, read it properly, then come back and re-read the question. You should now be able to explain to yourself why every wrong option is wrong, not just why the right answer is right.

3. For reasoning errors: Re-read the stem and mark the clinical anchors you missed. Train yourself to spot what you overlooked.

4. Write it in your error log. One line per question: topic, what you thought, what the answer was, and the key learning point. Reviewing this log the night before the exam is worth more than doing 200 extra questions.

Recognising Question Patterns

The MRCPI Part II recycles clinical patterns repeatedly. Once you recognise the pattern, the answer becomes fast and reliable.

Common patterns to train yourself on:

Pattern	What to look for
"Next best investigation"	They have already done bloods/CXR - what differentiates the diagnosis?
"Most likely diagnosis"	One detail in the stem is the anchor - find it
"Best initial management"	Is the patient stable or unstable? Unstable = act first, investigate later
"Which drug is most appropriate"	Contraindications in the stem are the key (e.g. renal failure, pregnancy, allergy)
"Most common cause of..."	Epidemiology knowledge - know your commonest causes in each specialty

Timing Discipline

150 questions in 3 hours = 72 seconds per question.

During practice, time yourself. When you first start, 90 seconds per question is acceptable. By Day 10, you should be hitting 60-70 seconds consistently.

A slow question is usually one where you did not read the last line first - you read the whole stem before knowing what was being asked, so you had to re-read it.

Specific BOF Habits for MRCPI

Never change your first answer unless you have a specific factual reason to. Studies consistently show that first instincts are correct more often than changes made due to doubt. If you find yourself thinking "actually, maybe B..." without a clear reason - stay with your original answer.

Flag and move on. If a question is taking more than 90 seconds, flag it and move. Come back at the end. Do not let one difficult question cost you time on 3 easy ones.

Spot the "except" and "least likely" questions. These are inverse questions and many candidates get caught out rushing through them. If you see NOT, EXCEPT, or LEAST LIKELY - underline it mentally and recalibrate your approach.

Drug questions: When the question involves drug choice, always check the stem for:

Renal function (eGFR)
Liver function
Pregnancy/breastfeeding
Concurrent medications (interactions)
Allergies

One of these is almost always the deciding factor.

Daily Practice Target

Given your 14-day plan and 10+ hours per day:

100 questions per day minimum during topic days
150 questions on mock days (Days 13 and 14)
Review every single wrong answer - no exceptions
Update your error log daily

The candidates who pass MRCPI Part II are not necessarily the ones who did the most questions - they are the ones who learned the most from each question they did wrong.

Is there an easy way to solve mcq with accuracy and revise

The Easiest Accurate System for BOF MCQs + Revision

The Core Idea: "STOP - FRAME - ACT"

Most candidates fail MCQs not because they lack knowledge, but because they react instead of reason. The system below slows your brain down just enough to reason properly, without wasting time.

Part 1: Solving MCQs Accurately - The VITAMIN Framework

Use this for every single question. It takes 5 seconds and prevents the most common errors.

V - Vital signs / stability (stable or unstable patient?)
I - Investigate or treat? (what is the question asking?)
T - Time course (acute, subacute, chronic?)
A - Age + sex + key demographics
M - Main complaint + the ONE abnormal finding
I - Important negatives (what they deliberately left out)
N - Now answer BEFORE looking at options

Example - how to apply it:

"A 45-year-old woman presents with 3 months of fatigue, weight gain, constipation and feeling cold. Her HR is 58. TFTs show TSH 12, free T4 low."

V: Stable

I: Question asks "best management" = treat

T: Chronic (3 months)

A: Middle-aged woman

M: Fatigue, weight gain, cold intolerance - TSH high, T4 low

I: No mention of pregnancy, no goitre pain

N: Hypothyroidism → Levothyroxine

You formed the answer before seeing options. The distractors cannot confuse you now.

Part 2: The "3-Second Triage" for Each Option

Once you look at the options, apply this fast filter:

Reaction	What it means
"Obviously wrong"	Eliminate immediately
"Probably wrong"	Mark and likely eliminate
"Possible"	Keep for now
"This is it"	Mark as answer

You should arrive at 1-2 "possible" options within 10 seconds. Then ask one question to decide between them:

"Which one is safer/earlier/less invasive for THIS patient in THIS context?"

The MRCPI almost always rewards the most appropriate next step, not the most aggressive or the most thorough.

Part 3: The 4 Golden Rules of Option Selection

Rule 1 - Unstable Patient = Resuscitate First

If the patient has low BP, high HR, low O2, or altered GCS - the answer is almost always stabilise before investigating. A-B-C beats any investigation option.

Rule 2 - Stable Patient = Investigate Before Treating

If the patient is stable and the diagnosis is unclear, the answer is usually the single best diagnostic test, not treatment.

Rule 3 - "Most Appropriate" Means Most Specific

When asked for the best investigation, pick the one that confirms the diagnosis, not the one that comes first in a workup. Example: bone marrow biopsy > full blood count for confirming lymphoma.

Rule 4 - Drug Questions = Eliminate by Contraindication

Always check the stem for hidden contraindications before selecting a drug:

eGFR < 30 → eliminates metformin, NSAIDs, direct renin inhibitors
Pregnancy → eliminates ACE inhibitors, warfarin, statins, tetracyclines
Asthma → eliminates beta-blockers (usually)
Liver disease → eliminates hepatotoxic drugs, reduces doses

The right drug is often the one left standing after eliminations, not the one you automatically associate with the diagnosis.

Part 4: The Easiest Revision System - "3 Pass Method"

This is how you convert question practice into permanent memory.

Pass 1 - Active Doing (During the Question Session)

Do questions in timed mode (no feedback)
Mark every question you were unsure about, even if you got it right
Finish the full set before reviewing

Pass 2 - Deep Review (Immediately After)

For every wrong answer AND every question you were unsure about:

Write this in your notebook (5 lines max per question):

Topic:
What I thought:
Right answer:
Why I was wrong:
The one rule to remember:

That last line is the most important. Compress your learning into one portable rule you can recall in 5 seconds under exam pressure.

Examples of good portable rules:

"Haemochromatosis = joints + liver + skin + diabetes + hypogonadism → check ferritin + transferrin saturation first"
"Anti-GBM disease = haematuria + haemoptysis + rapidly progressive GN → urgent plasma exchange"
"New AF + haemodynamically unstable = DC cardioversion first, not rate control"

Pass 3 - Spaced Recall (Next Morning - 10 Minutes)

Before starting the new day's questions, open yesterday's notebook page. Cover the right answer and test yourself on each rule you wrote. This takes 10 minutes and is worth more than an extra hour of reading. This is active recall - the most evidence-based revision technique known.

Part 5: The Cheat Sheet System

From Day 1, build one master cheat sheet per specialty. One A4 page per topic. Structure it like this:

SPECIALTY NAME
├── Top 5 diagnoses that appear in MCQs
├── Key investigations (what confirms each)
├── Key drug choices + contraindications
├── Classic exam traps in this specialty
└── Antibody/scoring system/criteria table

By Day 12 you have 12 A4 pages. On Day 13 and 14, reviewing these 12 pages takes 2 hours and covers the entire exam blueprint.

Part 6: Recognise the 5 Classic MRCPI Trap Types

The examiners use the same traps repeatedly. Knowing them in advance is free marks.

Trap 1 - The Red Herring Detail A detail is included that sounds important but is not. Example: "the patient is a smoker" in a question about SLE - irrelevant to the answer. Learn to filter noise.

Trap 2 - The Almost Right Answer One option is correct in general but wrong for this patient. Example: methotrexate is correct for RA, but the stem says the patient is trying to conceive. Always read the full stem before committing.

Trap 3 - The Correct Sequence Trap Two options are both correct steps, but one comes before the other. The question asks for the NEXT step. Always anchor to where in the clinical sequence the patient currently is.

Trap 4 - The Dose/Timing Trap Two drugs are the same class but one is appropriate for this stage of disease. Know your first-line vs second-line clearly for common conditions.

Trap 5 - The Negative Stem "Which of the following is NOT associated with..." - these are easy marks that candidates throw away by forgetting the word NOT. Always re-read the question line when you see a negative word.

The One-Page Summary

BEFORE reading stem → Read the question line first
WHILE reading stem  → Apply VITAMIN, find the ONE key anchor
BEFORE options      → Form your answer
WITH options        → Eliminate, don't select
BETWEEN 2 options   → "Safer, earlier, more specific for THIS patient?"
AFTER session       → 3 Pass method, write portable rules
NEXT MORNING        → 10-min spaced recall of yesterday's rules
DAILY               → Update specialty cheat sheet

Follow this consistently for 14 days and your accuracy will noticeably improve by Day 4-5, with significant confidence by Day 10.

How to memorise high yield points and concepts

How to Memorise High-Yield Points and Concepts for MRCPI Part II

The Fundamental Truth About Memory

Your brain does not store information like a hard drive. It stores patterns, stories, and connections. Trying to memorise a list of facts by repetition alone is the least efficient method possible. The techniques below work because they match how your brain actually encodes and retrieves information.

There are only 3 things that make memory permanent:

Emotion / surprise - unusual, funny, or shocking things stick
Connection - linking new information to something you already know
Retrieval practice - actively recalling, not passively re-reading

Everything below is built on these three principles.

Technique 1: The "Story Chain" for Lists

Whenever you need to memorise a list (causes, features, associations), turn it into a story.

Example - Causes of hypercalcaemia (CHIMPANZEES):

C - Cancer
H - Hyperparathyroidism
I - Immobility
M - Milk-alkali syndrome
P - Paget's disease
A - Addison's disease
N - Neoplasm (already covered but reinforced)
Z - Zollinger-Ellison (MEN association)
E - Excess Vitamin D
E - Excess Vitamin A
S - Sarcoidosis / other granulomas

The mnemonic gives you the first letter. You already know the word from clinical context. One word unlocks the whole concept.

Build your own mnemonics - ones you invent yourself stick far better than ones you read. The act of creating it is itself a memory exercise.

Technique 2: Chunking - Group Into 3s and 5s

Your working memory handles 3-5 items comfortably. Break long lists into chunks of 3.

Example - Wilson's disease features:

Instead of memorising 9 individual features, chunk them:

LIVER chunk:    Cirrhosis, hepatitis, acute liver failure
BRAIN chunk:    Dysarthria, tremor, psychiatric symptoms
EYE chunk:      Kayser-Fleischer rings, sunflower cataracts
LABS chunk:     Low caeruloplasmin, high urinary copper, Coomb's negative haemolysis

Now you remember 4 chunks, not 9 facts. In the exam, thinking "liver, brain, eye, labs" unlocks all 9.

Technique 3: The "Why" Anchor

For every fact you need to memorise, ask WHY it is true. Understanding the mechanism makes recall automatic because you can reconstruct the fact even if you forget it.

Example - Why does digoxin toxicity cause visual disturbances (yellow-green halos)? Digoxin inhibits Na/K ATPase → builds up intracellularly in retinal cells → alters colour perception.

Now you do not need to memorise the fact. You understand it, and understanding cannot be forgotten the same way a memorised fact can.

Apply this to every drug side effect, every investigation finding, every diagnostic criterion. "Why does this cause that?" is the question that converts short-term memory into permanent understanding.

Technique 4: The Comparison Table Method

For conditions that get confused with each other, never memorise them individually. Always memorise them as a head-to-head comparison. Your brain excels at storing contrasts.

Example - Crohn's vs UC:

Feature	Crohn's	UC
Location	Any part, mouth to anus	Colon only, continuous from rectum
Pattern	Skip lesions	Continuous
Depth	Transmural	Mucosal only
Complications	Fistulae, strictures, abscesses	Toxic megacolon, colorectal cancer
Surgery	Not curative	Curative (colectomy)
Smoking	Makes it worse	Protective (oddly)
Classic finding	Rose thorn ulcers, cobblestoning	Pseudopolyps

When you see a BOF question about IBD, the contrast table fires in your mind and you navigate to the answer.

Build these for:

Nephritic vs nephrotic syndrome
Hodgkin's vs Non-Hodgkin's lymphoma
Type 1 vs Type 2 respiratory failure
Pemphigus vs pemphigoid
Myositis vs polymyalgia rheumatica
PBC vs PSC vs autoimmune hepatitis

Technique 5: Visual Anchors for Abstract Concepts

For things that are hard to visualise (antibody patterns, scoring systems, feedback loops), draw a simple diagram once and never write it as a list again.

Example - Hepatitis B serology:

Draw a timeline once on paper:

Acute infection:  HBsAg ✓  |  HBeAg ✓  |  IgM anti-HBc ✓
Window period:    HBsAg ✗  |            |  IgM anti-HBc ✓  (only marker!)
Recovery:         Anti-HBs ✓  |  Anti-HBe ✓  |  IgG anti-HBc ✓
Vaccination:      Anti-HBs ✓  ONLY  (no anti-HBc = not natural infection)
Chronic carrier:  HBsAg ✓ for >6 months  |  IgG anti-HBc ✓

Draw this once. The visual layout means you navigate it like a map, not recall it like a list.

Other things to draw once and memorise as images:

The coagulation cascade (intrinsic vs extrinsic)
The renin-angiotensin-aldosterone system
The HPA axis feedback loop
The complement pathway
MEN syndrome tables (MEN1/2A/2B side by side)

Technique 6: The "Patient Story" Method for Rare Diagnoses

For rare or complex diagnoses, invent a memorable fictional patient. The story encodes all the clinical features together.

Example - Haemochromatosis:

"Arthur is a 50-year-old Irish man who is bronze, tired, and impotent. His joints hurt (especially his knuckles), his liver is enlarged, and he has diabetes. His ferritin is sky high."

Now you have: Irish (Celtic gene mutation, HFE C282Y), bronze skin, fatigue, hypogonadism, arthropathy (2nd/3rd MCP joints), hepatomegaly, diabetes mellitus (bronze diabetes), elevated ferritin.

Every feature of haemochromatosis is encoded in one 2-line story. You will never forget it.

Build patient stories for:

Wilson's disease (young patient with liver + neuro + KF rings)
Addison's disease (the bronze, hypotensive, hyponatraemic, hyperkalaemic patient)
Acromegaly (the large hands, sweaty, hypertensive, diabetic patient)
SLE (young woman, butterfly rash, joint pain, renal involvement)

Technique 7: Spaced Repetition - The Most Evidence-Based Method

The forgetting curve shows you forget 70% of new information within 24 hours unless you review it. Spaced repetition fights this directly.

The simple version for 14 days (no app needed):

Day 1:  Learn topic → review that evening (1 hour after finishing)
Day 2:  Review Day 1 notes for 10 minutes before starting new topic
Day 4:  Quick recall test on Day 1 topic (cover notes, write from memory)
Day 7:  Final rapid pass on Day 1 topic
Day 14: Mock exam consolidates everything

This is why the 14-day plan built morning reviews into each day. Each morning review is not just warm-up - it is a deliberate spaced recall session.

The Leitner Box method (simple physical system): Use 3 sections in your notebook:

Box 1: Things you keep getting wrong (review daily)
Box 2: Things you sometimes get wrong (review every 2 days)
Box 3: Things you consistently know (review on mock days only)

Every time you get a question right, the concept moves forward a box. Every time you get it wrong, it goes back to Box 1. This automatically directs your attention to weak spots.

Technique 8: The "Teach It Back" Method

After studying a topic, close your notes and explain the entire topic out loud as if teaching a medical student. This is called the Feynman Technique. Where you stumble or go vague, that is your knowledge gap. Go back, re-read that exact part, then teach it again.

This works because:

Speaking requires more complete retrieval than recognition
Gaps in explanation reveal gaps in understanding
The effort of retrieval makes the memory stronger

You do not need someone to teach - talk to yourself, talk to a wall, record yourself on your phone. The act of retrieval is what matters.

Technique 9: High-Yield Mnemonics Worth Memorising Now

These cover commonly tested areas and are worth knowing by heart:

Causes of clubbing - CLUBBING:

C - Cancer (lung, mesothelioma)
L - Lung abscess / bronchiectasis
U - Ulcerative colitis / Crohn's
B - Bronchiectasis (again - most common)
B - Bacterial endocarditis
I - Idiopathic / Inherited
N - Neurogenic tumours
G - GI: cirrhosis, coeliac

CHADS-VASc (AF stroke risk):

C - CCF (1)
H - Hypertension (1)
A - Age ≥75 (2)
D - Diabetes (1)
S - Stroke/TIA history (2)
V - Vascular disease (1)
A - Age 65-74 (1)
Sc - Sex category female (1)

Causes of high anion gap metabolic acidosis - MUDPILES:

M - Methanol
U - Uraemia
D - DKA / starvation ketoacidosis
P - Paracetamol / Propylene glycol
I - Isoniazid / Iron
L - Lactic acidosis
E - Ethylene glycol
S - Salicylates

Nephrotic syndrome causes - MINIMAL:

M - Membranous nephropathy (adults, most common)
I - IgA nephropathy (actually nephritic - know the difference)
N - Nil disease / Minimal change (children, most common in kids)
I - (focal segmental) gloImerulosclerosis - FSGS
M - Membranoproliferative GN
A - Amyloid
L - Lupus nephritis

Wells score PE - just remember the 3 biggest points:

Clinical signs of DVT = 3 points
PE most likely diagnosis = 3 points
HR > 100 = 1.5, immobility/surgery = 1.5, prior DVT/PE = 1.5
Haemoptysis = 1, malignancy = 1

The Daily Memorisation Routine (15 Minutes Only)

Plug this into the 14-day plan every evening:

Minutes 1-5:   Write 5 portable rules from today's wrong answers
Minutes 6-10:  Teach back today's main topic to yourself (out loud)
Minutes 11-15: Test yourself on yesterday's portable rules (cover and recall)

15 minutes per evening. In 14 days that is 3.5 hours of pure active recall - the equivalent of a full study day in terms of memory consolidation.

The One Rule That Overrides Everything

Never re-read to memorise. Always recall to memorise.

Re-reading feels productive but produces almost no durable memory. The moment you close your notes and try to retrieve - even if you fail and have to look it up - you have done more for your memory than 20 minutes of re-reading.

Every time you feel the urge to re-read a topic, replace it with: close the notes, write down everything you remember, then check what you missed. That process is revision. Re-reading is just reading.

I want to solve every mcq bof with accuracy so that i can pass exam 150/150. Please guide me

The Complete Guide to Solving Every BOF with Maximum Accuracy

First - The Honest Truth About 150/150

Aiming for 150/150 is the right mindset. In reality, the pass mark for MRCPI Part II is typically around 60-65%, but candidates who aim for perfection in their approach consistently score in the top tier. The system below is built for maximum accuracy, not just passing.

The difference between a candidate who scores 65% and one who scores 85%+ is not how much they know - it is how systematically they process each question.

The Master BOF Solving System - "RADAR"

This is your complete, step-by-step process for every single question. Practise it until it is automatic.

R - Read the question line FIRST
A - Anchor the key clinical facts
D - Decide your answer BEFORE options
A - Apply elimination to options
R - Review your reasoning, then commit

Step R - Read the Question Line First

Before reading one word of the stem, read the final question.

Categorise it immediately into one of 5 question types:

Type	Key phrase	Your mental mode
Diagnosis	"Most likely diagnosis"	Pattern recognition mode
Investigation	"Most appropriate next step / investigation"	Logical sequence mode
Management	"Best management / treatment"	Clinical priority mode
Mechanism	"Most likely cause / mechanism"	Pathophysiology mode
Complication	"Most likely complication"	Risk factor mode

Each type is solved differently. Knowing the type before reading the stem means your brain is already filtering for the right information as you read.

Step A - Anchor the Key Clinical Facts

Read the stem and extract only the facts that matter. Every BOF stem has:

The 7 Anchors

1. Demographic anchor Age + sex alone narrows diagnoses dramatically:

Young woman + joint pain + rash = think SLE before RA
Elderly man + bone pain + anaemia = myeloma before metastatic cancer
Child + nephrotic syndrome = minimal change disease until proven otherwise

2. Time anchor

Sudden onset (seconds/minutes) = vascular, embolic, arrhythmia
Hours to days = infection, infarction, acute inflammation
Weeks to months = malignancy, autoimmune, chronic infection
Years = degenerative, hereditary

3. The ONE key positive finding Every BOF has a single detail that clinches the answer. Train yourself to find it:

Kayser-Fleischer rings = Wilson's (not hepatitis, not cirrhosis)
Malar rash sparing nasolabial folds = SLE (not rosacea)
Heliotrope rash + Gottron's papules = dermatomyositis
Saddle-nose deformity + haematuria + haemoptysis = GPA/Wegener's

4. The deliberate negative finding Examiners include negatives to rule out your first instinct and guide you to the correct answer:

"ANA negative" in a connective tissue question = not SLE, think myositis
"No fever" in a joint pain question = crystal arthropathy more likely than septic
"Non-smoker" in a lung disease question = makes primary lung cancer less likely

5. Drug history Always check. Many BOF questions hinge on drug-induced disease:

Amiodarone = thyroid disease, pulmonary fibrosis, hepatotoxicity
Methotrexate = pneumonitis, hepatotoxicity, bone marrow suppression
ACE inhibitors = dry cough, angioedema, hyperkalaemia
Statins = myopathy (check CK), very rarely rhabdomyolysis
NSAIDs = peptic ulcer, AKI (especially with dehydration or diuretics)

6. Investigation result anchor One abnormal result is usually the key. Do not skim past it:

TSH high + T4 low = primary hypothyroidism (simple)
TSH low + T4 low = secondary/pituitary hypothyroidism (the trap)
High calcium + low phosphate + high PTH = primary hyperparathyroidism
High calcium + low PTH = malignancy-related hypercalcaemia

7. Vital signs anchor Always check if the patient is haemodynamically stable:

Unstable (low BP, high HR, falling O2, GCS drop) = intervene before investigating
Stable = investigate first, then treat

Step D - Decide Your Answer Before Looking

After extracting your 7 anchors, form a complete answer in your head.

Say to yourself:

"This patient has [condition X] because of [anchor 1] and [anchor 2]. The answer is [specific treatment/investigation]."

If you cannot form this sentence, you do not have enough clarity yet. Re-read the stem for the anchor you missed - do not jump to options yet.

This step takes discipline. Most candidates skip it because options are right there. But this is the step that eliminates the distractor effect.

Step A - Apply Elimination to Options

Now look at options. Never try to identify the right answer. Instead, eliminate wrong answers.

The Elimination Hierarchy

Eliminate first - things that harm the patient: Any option that could directly harm this specific patient goes out immediately. Example: beta-blocker in a patient with acute bronchospasm, or NSAIDs in a patient with AKI.

Eliminate second - things that are out of sequence: If the patient needs a diagnosis first, eliminate all treatment options. If the patient is already diagnosed, eliminate re-diagnostic options unless monitoring is the question.

Eliminate third - things that are true in general but wrong here: This is the hardest elimination. An option can be 100% correct medically but wrong for this patient because of a contraindication, allergy, or pregnancy hidden in the stem.

Eliminate fourth - things that are less specific: Between two investigations, choose the one that confirms rather than suggests. Between two drugs, choose the one appropriate for this stage and this patient profile.

You Should Now Have 1 or 2 Options Left

If 2 remain, ask this single deciding question:

"Which of these is the most appropriate for THIS patient, in THIS clinical context, at THIS moment in their care?"

Not which is better in general. Which is better HERE.

Step R - Review and Commit

Before moving on, do a 5-second final check:

✓ Did I answer what was actually asked?
✓ Is my answer consistent with the patient being stable/unstable?
✓ Did I miss any contraindication in the stem?
✓ Is this the NEXT step, or a later step?

Then commit. Do not re-read once committed unless you find a specific factual reason to change. Doubt alone is not a reason to change.

Question-Type Specific Strategies

For "Most Likely Diagnosis" Questions

Your goal is to find the pathognomonic feature - the one finding that only fits one diagnosis.

Build a mental library of pathognomonic findings:

Finding	Diagnosis
Kayser-Fleischer rings	Wilson's disease
Aschoff bodies on histology	Rheumatic fever
Reed-Sternberg cells	Hodgkin's lymphoma
Negri bodies	Rabies
Kimmelstiel-Wilson nodules	Diabetic nephropathy
Heliotrope rash + Gottron's papules	Dermatomyositis
Bitot's spots	Vitamin A deficiency
Charcot's triad (RUQ pain + fever + jaundice)	Cholangitis
Reynolds pentad (above + shock + confusion)	Severe cholangitis
Mees' lines on nails	Arsenic poisoning
Janeway lesions (painless)	Infective endocarditis
Osler's nodes (painful)	Infective endocarditis
Courvoisier's sign	Pancreatic cancer (not gallstones)
Sister Mary Joseph nodule	Periumbilical metastasis (GI cancer)

When you see any of these in a stem, the diagnosis is decided. Do not second-guess.

For "Most Appropriate Investigation" Questions

Use this decision tree:

Is the patient unstable?
    YES → The investigation is a BEDSIDE test (ECG, ABG, glucose, echo)
    NO  → Move to next question

Is the diagnosis already known?
    YES → The investigation MONITORS or STAGES (ECHO for HF, DEXA for osteoporosis)
    NO  → The investigation CONFIRMS

Is the clinical diagnosis clear?
    YES → Choose the GOLD STANDARD confirmatory test
    NO  → Choose the SINGLE BEST discriminating test

Gold standard tests worth memorising:

Condition	Gold standard investigation
Pulmonary embolism	CTPA
Addison's disease	Short Synacthen test
Cushing's syndrome	24h urinary cortisol OR overnight dexamethasone suppression
Acromegaly	IGF-1 (screening) + oral glucose tolerance test (confirmation)
Phaeochromocytoma	24h urinary catecholamines / plasma metanephrines
Conn's syndrome	Aldosterone:renin ratio
Haemochromatosis	HFE gene testing (after raised ferritin/transferrin saturation)
Wilson's disease	Serum caeruloplasmin + 24h urinary copper + slit-lamp
TB	Culture (gold standard) but IGRA / Mantoux for screening
Coeliac disease	Duodenal biopsy (after positive anti-TTG IgA)
Myasthenia gravis	Anti-AChR antibodies + edrophonium test / repetitive nerve stimulation
GPA (Wegener's)	cANCA / PR3-ANCA
Microscopic polyangiitis	pANCA / MPO-ANCA

For "Best Management" Questions

Apply this priority ladder in order:

1. Is the patient dying RIGHT NOW?     → ABCDE resuscitation
2. Is there a reversible cause?        → Treat the cause, not the symptom
3. Is this a medical emergency?        → Time-critical intervention first
4. Is the diagnosis confirmed?         → Confirm before committing to treatment
5. Are there contraindications?        → Check before selecting drug
6. What is the evidence-based first line? → Guidelines, not personal preference

Time-critical interventions - these are almost always the answer when the scenario is acute:

Scenario	Answer
STEMI	Primary PCI within 90 minutes (thrombolyse if PCI not available within 120 min)
Haemodynamically unstable AF	DC cardioversion (not rate control, not anticoagulation)
Tension pneumothorax	Immediate needle decompression (not CXR, not chest drain first)
Anaphylaxis	IM adrenaline 0.5mg (not IV, not antihistamine first)
Status epilepticus	IV lorazepam (benzodiazepine first line)
Acute meningitis	IV ceftriaxone immediately (do not wait for LP if signs of raised ICP)
Hyperkalaemia with ECG changes	IV calcium gluconate first (cardiac membrane stabilisation)
TCA overdose with arrhythmia	IV sodium bicarbonate
Digoxin toxicity	Digifab (digoxin-specific antibody)
Paracetamol overdose	N-acetylcysteine (even before levels if >8h since ingestion)

For "Drug Choice" Questions

Always apply the contraindication filter first, then select:

Drug contraindications that appear most in BOFs:

Drug	Key contraindication to check
Metformin	eGFR < 30, contrast dye (hold 48h), acute illness
ACE inhibitors	Bilateral renal artery stenosis, pregnancy, hyperkalaemia
NSAIDs	AKI/CKD, peptic ulcer, heart failure, asthma (some)
Warfarin	Pregnancy (teratogenic), active bleeding
Amiodarone	Thyroid disease, liver disease (relative), iodine allergy
Spironolactone	Hyperkalaemia, renal failure
Nitrates	Phosphodiesterase inhibitor use (sildenafil) - severe hypotension
Beta-blockers	Acute bronchospasm (NOT a contraindication in stable COPD)
Lithium	Narrow therapeutic window - check Na+ (dehydration raises levels)
Clozapine	Neutropenia (absolute - can cause agranulocytosis)

The 10 Most Commonly Tested Scenarios in MRCPI Part II

Statistically, these patterns appear in nearly every sitting. Know them cold:

1. Young woman + butterfly rash + joint pain + renal disease → SLE. Check anti-dsDNA, complement (C3/C4 low). Manage with hydroxychloroquine ± steroids.

2. Middle-aged man + AF + hyperthyroidism features → Check TFTs. Amiodarone-induced or primary hyperthyroidism. Rate control first, then address thyroid.

3. Elderly patient + hyponatraemia + recent chemotherapy → SIADH. Check urine osmolality > plasma osmolality. Fluid restrict first.

4. Young patient + haematuria + haemoptysis → Anti-GBM disease (Goodpasture's) vs GPA. Check ANCA and anti-GBM antibody. Urgent plasma exchange for Goodpasture's.

5. Chronic cough + bilateral hilar lymphadenopathy + hypercalcaemia → Sarcoidosis. ACE level raised. Diagnosis by biopsy (non-caseating granulomas). Steroids if symptomatic.

6. Patient on multiple drugs + new rash/cytopenia/hepatitis → Drug-induced. Identify the culprit (check drug history for timing), stop the drug.

7. Collapse + ECG changes (long QT or delta wave) → Long QT = torsades de pointes risk (check drugs: amiodarone, antipsychotics, some antibiotics). Delta wave = WPW, use flecainide/procainamide NOT adenosine (can cause VF).

8. Chronic diarrhoea + weight loss + joint pain + skin pigmentation → Whipple's disease. Caused by Tropheryma whipplei. PAS-positive macrophages on biopsy. Treat with co-trimoxazole.

9. Anaemia + peripheral neuropathy + glossitis → B12 deficiency. Check for pernicious anaemia (anti-intrinsic factor antibodies). Also check: is there subacute combined degeneration of the cord?

10. Fever + heart murmur + embolic phenomena → Infective endocarditis. Apply Duke criteria. Blood cultures x3 before antibiotics if stable. Echocardiography (TOE more sensitive than TTE).

Timing Mastery - How to Finish All 150 Questions

3 hours for 150 questions = 72 seconds per question average.

The time budget:

Easy questions (you know immediately): 30-40 seconds
Medium questions (need to think): 60-80 seconds
Hard questions (unsure): 90 seconds max then flag and move

The 90-second rule: If you have not resolved a question in 90 seconds, mark your best guess, flag it, and move on. You protect time for questions you can definitely get right. Come back to flagged questions at the end.

Most candidates who run out of time do so because of 5-10 questions they spent 3-4 minutes on. Those questions cost them 20 easy questions at the end.

Never sacrifice easy marks for hard ones.

The Mindset for 150/150

The candidates who achieve near-perfect scores share one habit: they do not fight the exam. They trust the process:

The answer is always in the stem - you just have to find it
The correct answer is always the most clinically sensible one
When in doubt, ask: "What would a safe, senior doctor do first?"
The exam rewards systematic thinking, not encyclopaedic knowledge

Every question has an answer that is clearly correct when you apply the right reasoning. Your job is not to guess - it is to extract the answer the examiner already put in the stem.

Follow RADAR on every question. Review every wrong answer. Sleep 8 hours the night before. Walk in knowing the system works.

That is how you get to 150/150.

How to master images questions in MRCPI part 2

How to Master Image Questions in MRCPI Part II

What Image Questions Actually Test

MRCPI Part II uses images to test whether you can recognise a diagnosis visually and act on it clinically. The image is never random - it is always paired with a clinical stem, and the question is usually about management or next step, not just naming what you see.

Image types that appear in MRCPI Part II:

Category	What to expect
ECGs	Arrhythmias, STEMI, blocks, long QT, WPW
CXR	Effusion, pneumothorax, consolidation, masses, cardiomegaly
CT scans	Head CT (bleed vs infarct), chest CT, abdominal CT
Blood films	Anaemia types, leukaemia, malaria, sickle cell
Skin lesions	Rashes, dermatological conditions
Fundoscopy	Diabetic/hypertensive retinopathy, papilloedema, optic atrophy
Histology	Biopsy findings, cellular patterns
Radiology	X-rays (joints, chest, abdomen)
Urine dipstick/microscopy	Casts, cells

The Universal Image Reading Method - "SCOPE"

Apply this to every image before looking at the options:

S - Survey the whole image first (do not zoom in immediately)
C - Classify what type of image it is and what organ/system
O - One finding that is abnormal (identify the key abnormality)
P - Pattern match to a diagnosis
E - Exclude alternatives quickly

This prevents the most common image error - fixating on one detail and missing the overall pattern.

ECG Mastery - The Most Tested Image

ECGs appear in nearly every sitting and cover cardiology (10% of exam). A systematic approach guarantees you never miss a finding.

The 8-Step ECG System (in order, every time)

1. Rate          - Normal (60-100), Brady (<60), Tachy (>100)
2. Rhythm        - Regular or irregular? (Check R-R intervals)
3. Axis          - Normal, left deviation, right deviation
4. P waves       - Present? Before every QRS? Shape normal?
5. PR interval   - Normal (120-200ms = 3-5 small squares)
6. QRS width     - Narrow (<120ms) or broad (>120ms)?
7. ST segment    - Elevation, depression, or normal?
8. T waves + QT  - Inverted? QT prolonged (>440ms men, >460ms women)?

Never skip steps. In the exam, a candidate who goes straight to ST segments misses a subtle complete heart block or WPW.

ECG Patterns You Must Recognise Instantly

STEMI - Localisation is frequently tested:

Territory	Leads with changes	Artery
Anterior	V1-V4	LAD
Inferior	II, III, aVF	RCA
Lateral	I, aVL, V5-V6	Circumflex
Posterior	Tall R in V1-V2, ST depression V1-V2	RCA/Circumflex
Right ventricular	V4R (right-sided leads)	RCA proximal

Critical teaching point: Inferior STEMI (II, III, aVF) = always do right-sided leads to check for RV infarct. If RV infarct present, do NOT give nitrates (causes severe hypotension). This is a classic BOF trap.

Arrhythmia patterns:

ECG finding	Diagnosis	Key management
Irregularly irregular, no P waves	AF	Rate vs rhythm, anticoagulate
Regular narrow tachycardia, P in ST segment	SVT (AVNRT)	Adenosine
Short PR + delta wave	WPW	Flecainide (NOT adenosine, NOT digoxin)
Broad complex tachycardia	VT until proven otherwise	DC cardioversion if unstable
Saw-tooth flutter waves at 300bpm, QRS at 150	Atrial flutter (2:1)	Rate control, cardioversion
Cannon A waves + AV dissociation on ECG	Complete heart block	Pacing
Sine wave pattern, peaked T waves	Hyperkalaemia	Calcium gluconate first
Long QT	Torsades de pointes risk	Stop culprit drug, IV magnesium
Saddle-shaped ST elevation globally	Pericarditis	NSAIDs, check for effusion
Low voltage + electrical alternans	Pericardial effusion/tamponade	Pericardiocentesis
S1Q3T3	PE (uncommon but tested)	CTPA, anticoagulate
Epsilon wave + T inversion V1-V3	ARVC	Specialist referral, ICD
Brugada pattern (RBBB + ST elevation V1-V3)	Brugada syndrome	ICD

Chest X-Ray Mastery

The Systematic CXR Approach - "ABCDE"

A - Airway (trachea midline or deviated?)
B - Breathing (lung fields - symmetrical? any opacities, effusions, pneumothorax?)
C - Cardiac (heart size <50% of thoracic diameter? borders clear?)
D - Diaphragm (right higher than left normally, costophrenic angles sharp?)
E - Everything else (bones, soft tissues, any lines/tubes, mediastinum width)

CXR Patterns to Recognise

Effusion:

Unilateral haziness from base up, blunted costophrenic angle
Massive effusion = mediastinal shift AWAY from effusion
If no shift = consider mesothelioma (fixes mediastinum) or bilateral disease

Pneumothorax:

Visible lung edge with absent lung markings lateral to it
Tension = trachea deviated AWAY, hypotension, distended neck veins
Management: tension = immediate needle decompression, simple = aspiration or drain

Consolidation vs collapse:

Feature	Consolidation	Collapse
Trachea/mediastinum	Not shifted (or shifted away)	Shifted TOWARDS
Air bronchograms	Present	Absent
Volume	Normal or increased	Decreased
Cause	Infection, aspiration	Tumour, mucous plug, foreign body

Classic CXR patterns in MRCPI:

CXR appearance	Diagnosis
Bilateral hilar lymphadenopathy	Sarcoidosis (most common), lymphoma, TB
"Bat wing" perihilar shadowing	Pulmonary oedema
Upper lobe fibrosis	TB, sarcoidosis, ankylosing spondylitis, silicosis
Lower lobe fibrosis	IPF, asbestosis, drug-induced (amiodarone, methotrexate)
Pleural plaques (calcified)	Asbestos exposure
Egg-shell calcification of hilar nodes	Silicosis
"Cannonball" lesions (multiple round nodules)	Haematogenous metastases (renal, testicular, thyroid, choriocarcinoma)
Cavitating lesion	TB, lung abscess, Wegener's/GPA, squamous cell carcinoma
Rib notching	Coarctation of the aorta
Widened mediastinum	Aortic dissection, lymphoma, thymoma

Blood Film Mastery

Blood films are tested regularly in haematology questions. Know these cold:

Film finding	Condition
Hypersegmented neutrophils	B12/folate deficiency
Target cells	Liver disease, thalassaemia, haemoglobin C, post-splenectomy
Sickle cells	Sickle cell disease
Spherocytes	Hereditary spherocytosis, autoimmune haemolytic anaemia
Schistocytes (helmet cells)	TTP, HUS, DIC, mechanical heart valve haemolysis
Tear-drop cells (dacrocytes)	Myelofibrosis
Pencil cells (elliptocytes)	Iron deficiency anaemia
Rouleaux formation	Multiple myeloma, chronic inflammation
Blast cells	Leukaemia (AML/ALL)
Smear cells (smudge cells)	CLL
Malarial rings in RBCs	Plasmodium falciparum (multiple rings per cell = falciparum)
Howell-Jolly bodies	Post-splenectomy, hyposplenism
Basophilic stippling	Lead poisoning, thalassaemia
Auer rods	AML (pathognomonic)

Key tip for blood film questions: Look at the white cells AND the red cells AND platelets together. The combination pattern tells you more than any single finding.

Fundoscopy Mastery

Ophthalmology appears within the Neurology/Ophthalmology/Psychiatry 10% block.

Recognise These Fundoscopy Findings

Diabetic retinopathy:

Stage	Features
Background	Dot haemorrhages, blot haemorrhages, hard exudates, microaneurysms
Pre-proliferative	Cotton wool spots (nerve fibre infarcts), venous beading
Proliferative	New vessel formation (on disc or elsewhere), vitreous haemorrhage
Maculopathy	Hard exudates at macula - causes visual loss (most common cause of blindness in diabetics)

Hypertensive retinopathy (Keith-Wagener classification):

Grade 1: Arteriolar narrowing, silver wiring
Grade 2: AV nipping (crossing changes)
Grade 3: Flame haemorrhages, cotton wool spots, hard exudates
Grade 4: Papilloedema (hypertensive emergency)

Papilloedema: Blurred disc margins, loss of venous pulsation, disc hyperaemia. Causes = raised ICP (tumour, hydrocephalus, idiopathic intracranial hypertension), malignant hypertension, CO2 retention.

Optic atrophy: Pale white disc, loss of disc vascularity. Causes = MS (optic neuritis), glaucoma, chronic papilloedema, compression.

Central retinal artery occlusion: White/pale retina, cherry red spot at macula. Sudden painless visual loss. Carotid atherosclerosis, emboli, giant cell arteritis.

Central retinal vein occlusion: "Stormy sunset" - flame haemorrhages in all 4 quadrants, disc swelling, dilated tortuous veins.

Skin Lesion Mastery

Dermatology is 5% of the exam. These are the highest-yield image patterns:

Must-Know Rash Diagnoses

Rash	Key features	Diagnosis
Butterfly distribution, spares nasolabial folds	Malar rash, photosensitive	SLE
Silvery plaques on extensor surfaces, well-defined	Elbows, knees, scalp	Psoriasis
Vesicles on erythematous base, dermatomal	Unilateral, painful	Herpes zoster
Purpuric non-blanching rash	Does not fade with glass	Meningococcal septicaemia / vasculitis
Target lesions (3 zones)	Central blister, dark ring, red halo	Erythema multiforme (HSV, Mycoplasma)
Diffuse epidermal detachment	Mucous membrane involvement	Stevens-Johnson / TEN (drug-induced)
Tense blisters on normal skin	Elderly patient	Bullous pemphigoid (anti-BP180)
Flaccid blisters, Nikolsky sign positive	Any age, mucosal involvement	Pemphigus vulgaris (anti-desmoglein)
Heliotrope rash + Gottron's papules	Proximal muscle weakness	Dermatomyositis
Photosensitive blistering on hands	Port wine urine	Porphyria cutanea tarda
Hypopigmented patches, no sensation	From endemic region	Leprosy
Erythema nodosum (tender red nodules on shins)	Bilateral, tender	Sarcoidosis, TB, IBD, streptococcal infection
Erythema chronicum migrans (expanding ring)	Tick bite history	Lyme disease
Palpable purpura on lower limbs	Young patient, IgA often raised	IgA vasculitis (HSP)

Histology Image Patterns

Histology images appear less frequently but are high yield when they do:

Histology finding	Diagnosis
Non-caseating granulomas	Sarcoidosis (also Crohn's)
Caseating granulomas	TB
PAS-positive macrophages in small bowel	Whipple's disease
Reed-Sternberg cells (owl-eye nuclei)	Hodgkin's lymphoma
Psammoma bodies	Papillary thyroid cancer, meningioma, serous ovarian cancer
Kimmelstiel-Wilson nodules (glomerular)	Diabetic nephropathy
Crescent formation in glomeruli	Rapidly progressive GN (anti-GBM, ANCA)
Thickened GBM with "spike and dome"	Membranous nephropathy
Amyloid deposition (Congo red, apple-green birefringence)	Amyloidosis
Foam cells in vessel wall	Atherosclerosis
Heinz bodies (supravital stain)	G6PD deficiency

Radiology - Joint X-Rays

Rheumatology (10%) frequently uses joint X-rays:

X-ray finding	Diagnosis
Joint space narrowing + osteophytes + subchondral sclerosis	Osteoarthritis
Periarticular erosions + juxta-articular osteoporosis + soft tissue swelling	Rheumatoid arthritis
Chondrocalcinosis (calcification in joint cartilage)	Pseudogout (CPPD)
Punched-out erosions with overhanging edge (rat-bite erosions)	Gout (tophi)
Sacroiliitis + bamboo spine (syndesmophytes)	Ankylosing spondylitis
Pencil-in-cup deformity	Psoriatic arthritis
Soft tissue calcification + periarticular erosions	CREST/systemic sclerosis

How to Practise Image Questions

Daily Image Drill (15 Minutes)

Do this every single day outside of your main question bank sessions:

Minutes 1-5: Look at 5 ECGs. Without notes, write down your systematic 8-step analysis and give a diagnosis for each.

Minutes 6-10: Look at 5 CXRs using ABCDE. Name the abnormality and the most likely diagnosis.

Minutes 11-15: Look at 5 blood films, skin photos, or fundoscopy images. Name the finding and the diagnosis.

Where to find image banks:

Radiopaedia.org (free, excellent CXR and CT cases)
ECGpedia.org (ECG library with diagnosis)
DermNet NZ (dermatology image bank, free)
Life in the Fast Lane (LITFL) - excellent ECG and CXR quiz
BMJ Learning image cases

The Image Error Log

Keep a separate section in your error log for images. For every image you get wrong, paste or draw it and write:

Image type:
What I thought:
Key finding I missed:
Why this diagnosis:
The one thing to look for next time:

After 14 days you will have a personalised atlas of your weak image patterns.

The One-Page Image Cheat Sheet for Exam Day

Build this yourself by Day 10 and review it on Day 13 and 14:

ECGs:      Rate → Rhythm → Axis → P → PR → QRS → ST → T/QT
CXR:       Airway → Breathing → Cardiac → Diaphragm → Everything else
Blood film: RBC shape → WBC pattern → Platelets → Inclusions
Fundoscopy: Disc margins → Vessels → Background → Macula
Skin:      Distribution → Morphology → Surface → Blanching?
Histology: Cell type → Architecture → Inclusion bodies → Staining
X-ray:     Joint space → Bone density → Erosions → Soft tissue

Image questions are free marks when you approach them systematically. Every image has a definitive answer. The candidate who has a system gets it right in 45 seconds. The candidate without a system spends 3 minutes and still guesses.

Own the system, own the image questions.

How to solve endocrine interpretation questions and also cardiac catheterisation problems

Mastering Endocrine Interpretation + Cardiac Catheterisation Problems

PART 1: ENDOCRINE INTERPRETATION QUESTIONS

The Core Principle - Always Use the Axis

Every endocrine question is solved by identifying where in the axis the problem lies. The axis always works the same way:

Hypothalamus → releases stimulating hormone (e.g. TRH, CRH, GnRH, GHRH)
      ↓
Pituitary → releases trophic hormone (e.g. TSH, ACTH, LH/FSH, GH)
      ↓
Target gland → releases end hormone (e.g. T4, cortisol, testosterone, IGF-1)
      ↓
Negative feedback → suppresses hypothalamus and pituitary

The golden rule:

End hormone LOW + trophic hormone HIGH = primary (target gland failure)
End hormone LOW + trophic hormone LOW = secondary/pituitary (pituitary failure)
End hormone HIGH + trophic hormone LOW = autonomous secretion (tumour or excess)
End hormone HIGH + trophic hormone HIGH = ectopic secretion or resistance

This one rule solves 80% of endocrine interpretation questions before you even look at the options.

Section 1: Thyroid Interpretation

The TSH/T4 Matrix

TSH	Free T4	Diagnosis
High	Low	Primary hypothyroidism
Low	Low	Secondary hypothyroidism (pituitary)
Low	High	Primary hyperthyroidism
High	High	TSH-secreting pituitary adenoma (rare) OR thyroid hormone resistance
Normal	Normal	Euthyroid
Low	Normal	Subclinical hyperthyroidism
High	Normal	Subclinical hypothyroidism

Thyroid Antibodies - What They Mean

Antibody	Associated condition
Anti-TPO (anti-microsomal)	Hashimoto's thyroiditis, Graves' (less specific)
Anti-thyroglobulin	Hashimoto's, thyroid cancer monitoring
TSH receptor antibodies (TRAb/TSIG)	Graves' disease (stimulating)
TSH receptor blocking antibodies	Hashimoto's (blocking, causes hypothyroidism)

Dynamic Thyroid Tests

TRH stimulation test:

Give TRH → measure TSH at 0, 20, 60 minutes
Normal: TSH rises
Primary hypothyroidism: exaggerated TSH rise (already maximally stimulated)
Pituitary hypothyroidism: flat/no TSH response
Hypothalamic hypothyroidism: delayed TSH rise (pituitary intact but sluggish)

Sick Euthyroid Syndrome (Non-Thyroidal Illness)

Any severe illness → low T3, low/normal T4, normal/low TSH

Do NOT treat - it normalises when illness resolves
Key BOF trap: "patient in ITU with abnormal TFTs" = sick euthyroid, not true thyroid disease

Thyroid in Pregnancy

hCG stimulates TSH receptor → TSH drops in first trimester (normal)
TSH reference range is lower in pregnancy (0.1-2.5 in first trimester)
Treat subclinical hypothyroidism in pregnancy (target TSH < 2.5)
Propylthiouracil preferred over carbimazole in first trimester (carbimazole causes aplasia cutis)

Section 2: Adrenal Interpretation

The Cortisol Axis Framework

CRH (hypothalamus) → ACTH (pituitary) → Cortisol (adrenal) → negative feedback

Cushing's Syndrome - Step by Step

Step 1: Confirm cortisol excess (any of these):

24-hour urinary free cortisol (elevated)
Overnight 1mg dexamethasone suppression test (cortisol fails to suppress to <50 nmol/L)
Late-night salivary cortisol (loss of diurnal variation)

Step 2: Check ACTH to find the cause:

ACTH	Cortisol	Diagnosis
High (>20 pg/mL)	High	ACTH-dependent: pituitary (Cushing's disease) or ectopic ACTH
Low (<10 pg/mL)	High	ACTH-independent: adrenal adenoma/carcinoma, exogenous steroids

Step 3: If ACTH-dependent, distinguish pituitary vs ectopic:

Test	Cushing's disease (pituitary)	Ectopic ACTH
High-dose dexamethasone suppression (2mg QDS x2 days)	Cortisol suppresses >50%	Cortisol does NOT suppress
CRH stimulation test	ACTH and cortisol RISE	Minimal/no response
MRI pituitary	May show adenoma	Normal
CT chest/abdomen	Normal	Shows tumour (lung, carcinoid, SCLC)
Inferior petrosal sinus sampling (IPSS)	Central:peripheral ACTH ratio >2	Ratio <2

Ectopic ACTH classic causes: Small cell lung cancer (most common), carcinoid tumour, phaeochromocytoma, medullary thyroid cancer.

Addison's Disease - Interpretation

Primary adrenal insufficiency:

Low cortisol + HIGH ACTH
Low sodium, HIGH potassium (aldosterone also deficient)
Hyperpigmentation (ACTH stimulates melanocytes)
Confirmatory test: Short Synacthen test (give 250mcg ACTH, cortisol should rise to >550 nmol/L at 30 min)

Secondary adrenal insufficiency (pituitary):

Low cortisol + LOW ACTH
Sodium may be low (cortisol deficiency) but potassium NORMAL (aldosterone intact)
No hyperpigmentation
Causes: pituitary tumour, steroid withdrawal, pituitary apoplexy

BOF trap: Patient on long-term steroids stopping suddenly = secondary adrenal insufficiency. Synacthen test will be abnormal. Do NOT stop steroids abruptly.

Conn's Syndrome (Primary Hyperaldosteronism)

Pattern:

Hypertension + hypokalaemia + metabolic alkalosis
Elevated aldosterone + suppressed renin
Aldosterone:renin ratio (ARR) >30 = screening test

Causes:

Bilateral adrenal hyperplasia (most common, ~60%)
Aldosterone-secreting adenoma (Conn's adenoma, ~35%)

Investigation sequence:

ARR (screening)
Salt loading test or fludrocortisone suppression (confirmation)
Adrenal CT (localisation)
Adrenal vein sampling (if CT equivocal - differentiates bilateral from unilateral)

Treatment:

Unilateral adenoma: adrenalectomy
Bilateral hyperplasia: spironolactone (aldosterone antagonist)

Phaeochromocytoma

Classic triad: Episodic headache + sweating + palpitations + hypertension

Investigation:

24-hour urinary catecholamines and metanephrines (best screening)
Plasma metanephrines (highly sensitive, good screening)
MIBG scan (localisation, especially for extra-adrenal/malignant)

Rule of 10s:

10% bilateral, 10% malignant, 10% extra-adrenal, 10% in children, 10% familial

BOF trap: Do NOT give beta-blockers without alpha-blockade first (causes paradoxical hypertension from unopposed alpha stimulation). Always alpha-block first with phenoxybenzamine, then add beta-blocker.

Section 3: Pituitary Interpretation

Acromegaly

Screening: IGF-1 (elevated, reflects integrated GH secretion) Confirmation: Oral glucose tolerance test (OGTT) - GH should suppress to <1 mU/L in normal; in acromegaly, GH FAILS to suppress or paradoxically rises

Features: Large hands/feet, coarse facies, prognathism, macroglossia, sweating, hypertension, diabetes, carpal tunnel, bitemporal hemianopia (if large tumour compresses chiasm), sleep apnoea

Prolactinoma

Hyperprolactinaemia causes - remember "SPIT":

S - Stalk compression (any pituitary mass - disconnection hyperprolactinaemia)
P - Prolactinoma (most common pituitary tumour)
I - Iatrogenic (drugs: dopamine antagonists - metoclopramide, antipsychotics, domperidone)
T - Thyroid (primary hypothyroidism - TRH stimulates prolactin)
    + Pregnancy, renal failure, stress

Key distinction:

Prolactinoma: prolactin usually >5000 mU/L
Stalk compression from non-functioning macroadenoma: prolactin usually <3000 mU/L
Drug-induced: usually <3000 mU/L

Treatment: Dopamine agonist (cabergoline first line, bromocriptine second line) - even for macroadenomas, surgery rarely needed first

Diabetes Insipidus vs SIADH

This is heavily tested. Master the table:

Test	Cranial DI	Nephrogenic DI	SIADH
Plasma sodium	High	High	Low
Plasma osmolality	High	High	Low
Urine osmolality	Low (<300)	Low (<300)	High (>500)
Urine sodium	Low	Low	High (>20)
Response to DDAVP	Urine concentrates	No response	-

Water deprivation test:

Deprive water → measure urine and plasma osmolality every hour
Normal: urine osmolality rises above 600
DI: urine osmolality stays low despite rising plasma osmolality
Then give DDAVP:
- Cranial DI: urine osmolality rises (responds to ADH)
- Nephrogenic DI: urine osmolality stays low (renal tubule resistant)

Section 4: MEN Syndromes (Classic BOF Topic)

Feature	MEN 1	MEN 2A	MEN 2B
Mnemonic	3 Ps	2 Ps	Mucosal
Parathyroid	Hyperparathyroidism (95%)	Hyperparathyroidism	No
Pancreas	Insulinoma, gastrinoma, VIPoma	No	No
Pituitary	Prolactinoma, GH adenoma	No	No
Adrenal	No	Phaeochromocytoma	Phaeochromocytoma
Thyroid	No	Medullary thyroid cancer	Medullary thyroid cancer
Other	No	No	Marfanoid, mucosal neuromas
Gene	MEN1 (menin)	RET proto-oncogene	RET proto-oncogene

BOF trap: MEN 2A/2B with phaeochromocytoma - always treat phaeochromocytoma FIRST before thyroid surgery (alpha-block first to prevent hypertensive crisis under anaesthesia).

PART 2: CARDIAC CATHETERISATION PROBLEMS

The Core Skill - Reading Catheterisation Data

Cardiac catheterisation gives you:

Pressure readings in each chamber and vessel
Oxygen saturations at each point
Cardiac output and cardiac index
Valve gradients (for stenosis)
Vascular resistance calculations

You do not need to memorise complex formulae. You need to understand the logic of each number.

Normal Catheterisation Values - Memorise These

Location	Pressure (mmHg)	O2 Saturation
Right atrium (RA)	0-8 mmHg (mean)	70-75%
Right ventricle (RV)	15-30 / 0-8 mmHg	70-75%
Pulmonary artery (PA)	15-30 / 8-15 mmHg (mean ~25)	70-75%
PCWP (wedge)	6-12 mmHg	-
Left atrium (LA)	6-12 mmHg	95-100%
Left ventricle (LV)	100-140 / 5-12 mmHg	95-100%
Aorta	100-140 / 60-90 mmHg	95-100%

Normal cardiac output: 4-8 L/min Normal cardiac index: 2.5-4.0 L/min/m² Normal pulmonary vascular resistance (PVR): <3 Wood units Normal systemic vascular resistance (SVR): 9-20 Wood units

How to Solve Catheterisation BOFs - The 3-Question Method

When given a catheterisation dataset, ask these 3 questions in order:

Question 1: Are there abnormal pressures?

Where is the pressure too high? (suggests downstream obstruction or regurgitation)
Where is the pressure too low? (suggests pump failure or upstream problem)

Question 2: Are there oxygen saturation step-ups or step-downs?

Step-UP in O2 saturation as you go right to left = left-to-right shunt (oxygenated blood entering right side)
Step-DOWN in O2 as you go left to right = right-to-left shunt (deoxygenated blood entering systemic circulation - causes cyanosis)

Question 3: Is there a gradient across a valve?

Gradient = pressure on one side minus pressure on other side
Significant gradient = stenosis of that valve

Reading Oxygen Saturations for Shunts

Left-to-Right Shunt (ASD, VSD, PDA)

Oxygenated blood leaks from left to right side. This causes a step-up in oxygen saturation at the point where it enters.

How to localise the shunt:

Step-up occurs at	Location of shunt
Right atrium (RA higher than SVC)	ASD (atrial septal defect)
Right ventricle (RV higher than RA)	VSD (ventricular septal defect)
Pulmonary artery (PA higher than RV)	PDA (patent ductus arteriosus)

Example BOF:

SVC = 70%, RA = 70%, RV = 85%, PA = 84%

Step-up is between RA (70%) and RV (85%) = VSD

Calculating shunt ratio (Qp:Qs):

Qp:Qs = (Aortic sat - MVO2) ÷ (PV sat - PA sat)
MVO2 (mixed venous) ≈ (3 × SVC + 1 × IVC) ÷ 4 or just use RA
Qp:Qs >1.5:1 = significant shunt, consider closure
Qp:Qs >2:1 = large shunt, definitely close

Right-to-Left Shunt (Eisenmenger, Tetralogy of Fallot)

Deoxygenated blood enters left side. Causes cyanosis and step-DOWN in left-sided O2 saturation.

Eisenmenger syndrome:

Longstanding left-to-right shunt (VSD, ASD, PDA) → pulmonary hypertension develops → RV pressure rises until it exceeds LV → shunt REVERSES to right-to-left → cyanosis appears
Catheterisation: PA pressure equals or exceeds systemic pressure, O2 saturations equalise
Management: DO NOT close the defect (fatal), manage with pulmonary vasodilators (sildenafil, bosentan)

Valve Stenosis - Calculating and Interpreting Gradients

Aortic Stenosis

Gradient = LV systolic pressure - Aortic systolic pressure

Gradient	Severity
<25 mmHg	Mild
25-50 mmHg	Moderate
>50 mmHg (or mean >40)	Severe

Severe AS criteria (any one):

Peak gradient >64 mmHg (peak velocity >4 m/s on echo)
Mean gradient >40 mmHg
Valve area <1.0 cm²
Valve area index <0.6 cm²/m²

BOF example:

LV pressure = 220/10, Aortic pressure = 110/70

Peak gradient = 220 - 110 = 110 mmHg = severe AS Note also that LVEDP is normal (10 mmHg), but if it were elevated (>15 mmHg), it would suggest LV decompensation.

Low-flow, low-gradient AS (tricky BOF pattern):

LV dysfunction (EF <40%) → cannot generate high gradient despite severe stenosis
Valve area small but gradient only 30 mmHg
Test: dobutamine stress echo - if gradient increases with dobutamine, truly severe AS

Mitral Stenosis

Gradient = LA pressure (PCWP) - LV diastolic pressure

Normal mitral valve area = 4-6 cm²

Valve area	Severity
>1.5 cm²	Mild
1.0-1.5 cm²	Moderate
<1.0 cm²	Severe

BOF example:

PCWP = 25 mmHg, LVEDP = 8 mmHg

Mitral gradient = 25 - 8 = 17 mmHg = significant mitral stenosis

Associated findings with severe MS:

Elevated PCWP → pulmonary oedema symptoms
Elevated PA pressures → pulmonary hypertension
Elevated RA/RV pressures → right heart failure (late)
AF is common (enlarged LA from chronic pressure)

Pulmonary Stenosis

Gradient = RV systolic - PA systolic

Gradient	Severity
<40 mmHg	Mild
40-80 mmHg	Moderate
>80 mmHg	Severe

Tricuspid Stenosis (rare but tested)

Gradient = RA pressure - RV diastolic pressure Mean gradient >5 mmHg = significant

Valve Regurgitation in Catheterisation

Unlike stenosis, regurgitation is not assessed by gradient. It is assessed by:

Ventriculography (contrast injected into ventricle, graded 1-4 based on regurgitant volume)
Elevated filling pressures (LVEDP elevated in AR, PCWP elevated in MR)

Aortic regurgitation:

Wide pulse pressure on aortic trace (e.g. 160/40 instead of 120/80)
Elevated LVEDP (LV volume overloaded)
Equalisation of aortic diastolic and LVEDP = severe AR (premature mitral valve closure)

Mitral regurgitation:

Giant V waves on PCWP trace (systolic pressure wave from regurgitant flow into LA)
V wave >35-40 mmHg = severe MR
Elevated PCWP overall

Pulmonary Hypertension - Catheterisation Diagnosis

Definition: Mean PA pressure >20 mmHg at rest

Type	PCWP	PVR	Cause
Pre-capillary (Group 1 PAH)	Normal (<15)	High (>3 WU)	Idiopathic PAH, connective tissue, HIV
Post-capillary (Group 2)	Elevated (>15)	Normal	Left heart disease (MS, LV failure, AS)
Mixed	Elevated	High	Chronic left heart disease with reactive PH

Vasoreactivity testing (important BOF topic):

Give inhaled NO or adenosine during catheterisation
Positive response (mean PA drops >10 mmHg to <40 mmHg) = may respond to calcium channel blockers
Only ~10-15% of idiopathic PAH patients respond
Non-responders need prostacyclins, endothelin antagonists, or PDE5 inhibitors

Cardiac Output Measurement

Two methods used in catheterisation lab:

Fick Method

CO = O2 consumption ÷ (Arterial O2 content - Venous O2 content)

O2 consumption assumed as 125 mL/min/m² if not measured
Arterial content = aortic saturation × Hb × 1.34 × 10
Venous content = PA saturation × Hb × 1.34 × 10

BOF example:

O2 consumption = 250 mL/min, Aortic sat = 98%, PA sat = 68%, Hb = 15 g/dL

Arterial content = 0.98 × 15 × 1.34 × 10 = 197 mL/L Venous content = 0.68 × 15 × 1.34 × 10 = 137 mL/L CO = 250 ÷ (197-137) = 250 ÷ 60 = 4.2 L/min (normal)

Thermodilution Method

Cold saline injected into RA, temperature change measured in PA
Less accurate in: tricuspid regurgitation, low cardiac output states, intracardiac shunts

Classic Catheterisation BOF Scenarios

Scenario 1:

RA = 4 mmHg, RV = 28/4, PA = 28/12, PCWP = 22 mmHg, LV = 130/24, Aorta = 130/80

PCWP elevated (22) = left heart problem (left heart failure or mitral stenosis)
Mitral gradient = PCWP - LVEDP = 22 - 24 = negative (no MS)
LVEDP elevated (24) = LV dysfunction / heart failure
Aortic gradient = 0 (no AS)
Diagnosis: Left ventricular failure with pulmonary venous hypertension

Scenario 2:

SVC O2 = 70%, RA O2 = 80%, RV = 80%, PA = 80%

Step-up from SVC (70%) to RA (80%) = ASD (atrial septal defect)
Shunt enters at atrial level

Scenario 3:

RV = 80/6, PA = 80/40 (mean 55 mmHg), PCWP = 8 mmHg, PVR elevated

PA pressure severely elevated (mean 55 mmHg)
PCWP normal = pre-capillary (not left heart disease)
PVR high = pulmonary arterial hypertension
Diagnosis: Pulmonary arterial hypertension (PAH)

Scenario 4:

LV = 180/12, Aorta = 80/60 (mean 70)

LV systolic = 180, Aortic systolic = 80
Gradient = 180 - 80 = 100 mmHg = severe aortic stenosis
Note narrow pulse pressure on aortic trace (80/60) - classic AS finding

One-Page Summary for Both Topics

ENDOCRINE:
High end hormone + low trophic   = autonomous/tumour
Low end hormone + high trophic   = primary gland failure
Low end hormone + low trophic    = pituitary/hypothalamic failure

Always confirm then localise:
Cushing's → 24h cortisol → ACTH → high-dose dex/IPSS
Conn's    → ARR → salt loading → CT → adrenal vein sampling
DI        → water deprivation → DDAVP response
Acromegaly→ IGF-1 → OGTT (GH fails to suppress)

CATHETERISATION:
Pressures: RA<8, RV 30/8, PA 30/15, PCWP<12, LV 120/8, Ao 120/80
O2 step-up at RA=ASD, RV=VSD, PA=PDA
Gradient across valve = stenosis severity
Giant V waves on PCWP = severe MR
Wide pulse pressure on Ao trace = AR
Pre-capillary PH = PCWP normal + PVR high
Post-capillary PH = PCWP high + PVR normal/mildly high

Master these two topics and you have covered a substantial portion of cardiology and endocrinology - together accounting for 20% of your exam.

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