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Mission Indradhanush

Introduction

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Background / Rationale

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Objective / Goal

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Target Beneficiaries

• Children below 2 years of age who are unvaccinated or partially vaccinated
• Pregnant women who have not received tetanus toxoid

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Vaccines Covered

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High Focus Districts

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Implementation Phases

• Phases 1-6 (April 2015 - December 2018): Covered 681 districts; 3.39 crore children reached; ~81.79 lakh children fully immunized; 87.18 lakh pregnant women vaccinated.
• First two phases alone achieved a 6.7% increase in full immunization coverage in one year (vs. 1%/year previously); rural areas improved more (7.9%) than urban (3.1%).

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Intensified Mission Indradhanush (IMI)

• Launched in October 2017
• Covered 190 districts/urban areas across 24 states
• Special focus on urban slums and districts with slowest progress
• Used head-count surveys to generate due-lists of beneficiaries
• IMI 5.0 (latest phase): 18.5 percentage points increase in full immunization coverage compared to NFHS-4 (2015-16)
• Subsequent phases: IMI 2.0, 3.0, 4.0, 5.0 (2023) have progressively expanded coverage

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Key Features / Strategies

1. Microplanning: Session-level planning using household surveys and due-list preparation
2. Social mobilization: ASHA workers, Anganwadi workers, and community leaders
3. Accountability frameworks: District and state task forces for immunization
4. Tracking: eVIN (Electronic Vaccine Intelligence Network) for cold chain and logistics
5. Leveraging polio eradication lessons: Block-level planning and supervision borrowed from pulse polio strategy
6. Multi-sectoral convergence: Involvement of Women & Child Development, Tribal Welfare, Panchayati Raj, ITBP, Railways

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Significance in Pediatrics

• Reduces infant and child morbidity and mortality from vaccine-preventable diseases
• Reaches left-out and drop-out children - the most vulnerable groups
• Strengthened cold chain and vaccine logistics across India
• Foundation for introducing new vaccines (Rotavirus, PCV, MR, IPV) into routine immunization

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Outcome

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Mission Indradhanush

• Targets 528+ high-focus districts across 28 states with highest unimmunized burden
• Conducted as 7-day intensive monthly campaigns for 4 consecutive months
• Uses ASHA/AWW workers for mobilization and door-to-door surveys for due-lists

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National Immunization Schedule (NIS) - India

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Schedule Table

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Key Points

• Pentavalent vaccine = DPT + Hepatitis B + Hib (5-in-1)
• fIPV = Fractional dose Inactivated Polio Vaccine (1/5th dose, given intradermally)
• Vitamin A supplementation: 1 lakh IU at 9 months; 2 lakh IU every 6 months from 16 months up to 5 years (total 9 doses)
• Td replaced TT for children at 10 and 16 years
• Diseases covered: TB, Diphtheria, Pertussis, Tetanus, Polio, Measles, Rubella, Hepatitis B, Hib disease, Rotavirus diarrhea, Pneumococcal disease, Japanese Encephalitis

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Route & Site (important for exams)

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Pulse Polio Immunization Programme

Definition & Launch

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Objectives

• To eradicate poliomyelitis from India
• To rapidly raise herd immunity above the threshold needed to stop wild poliovirus transmission
• To reach every child, including those missed by routine immunization

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Strategy / Components

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AFP Surveillance

• Reporting of all AFP cases in children under 15 years is mandatory
• Every single case is treated as an outbreak - response within 48 hours
• Stool samples collected for virus isolation
• Follow-up of all AFP cases at 60 days to check for residual paralysis

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Strategies for Polio Eradication (Park's)

1. Conduct Pulse Polio Immunization days every year
2. Sustain high routine immunization coverage
3. Monitor OPV coverage at district level
4. Strengthen AFP surveillance
5. Rapid case investigation with stool sample collection
6. Conduct mop-up operations for confirmed/suspected cases

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Outcome / Achievement

• Last case of wild poliovirus in India: January 2011 (Howrah, West Bengal)
• India removed from polio-endemic countries list: 25 February 2012
• India certified polio-free by WHO: 27 March 2014
• The first two phases led to a 6.7% increase in immunization coverage

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Current Status

• tOPV replaced by bOPV (bivalent OPV) in April 2016 (Polio Endgame Strategy)
• fIPV (fractional Inactivated Polio Vaccine) introduced from 30 November 2015 at 6 and 14 weeks - given intradermally (0.1 ml) to protect against type-2 poliovirus after removal of OPV type-2 component

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Pentavalent Vaccine

Definition

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Composition (5 Antigens)

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Schedule (Under UIP / NIS)

• Replaces: DPT primary doses + Hepatitis B doses at 6, 10, 14 weeks
• Continued separately: Hepatitis B birth dose + DPT booster doses at 16-24 months and 5-6 years

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Dose, Route & Site

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Storage

• Cold chain: 2-8°C
• Freeze sensitive - must NOT be frozen (freezing destroys the vaccine)
• Discard if frozen or exposed to temperature above 8°C

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Contraindications

• Previous severe allergic reaction (anaphylaxis) to a prior dose
• Encephalopathy within 7 days of previous pertussis vaccine
• Progressive neurological disorder

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Advantages

1. Reduces number of injections (3 separate vaccines replaced by 1)
2. Improves compliance and immunization coverage
3. Adds Hib protection - a previously unvaccinated disease in India's UIP
4. Simplifies the immunization schedule for health workers

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Side Effects

• Common: Pain, redness, swelling at injection site; fever, irritability, vomiting
• Rare: High fever (>39.5°C), febrile seizures
• Very rare: Severe allergic reaction (anaphylaxis)

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Introduction in India

• First introduced in Kerala and Tamil Nadu
• Now expanded to whole country under UIP

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Measles Vaccine & MR (Measles-Rubella) Vaccine

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PART A: MEASLES VACCINE

Nature of Vaccine

• Live attenuated virus vaccine - the only type recommended by WHO
• Presented as freeze-dried (lyophilized) powder; reconstituted with sterile diluent before use
• Each dose (0.5 ml) contains ≥1000 viral infective units
• Contains stabilizers: sorbitol + hydrolysed gelatin; small amount of neomycin
• Does NOT contain thiomersal

Available Forms

Schedule (India - NIS)

• Minimum interval between MCV1 and MCV2: 4 weeks
• In high-transmission countries: MCV1 at 9 months, MCV2 at 15-18 months

Storage

• Freeze-dried vaccine: 2-8°C, protected from sunlight (kept in coloured vials)
• Diluent: must NOT be frozen but cooled before use
• After reconstitution: use within 4 hours, store at 2-8°C in the dark
• Reconstituted vaccine loses 50% potency after 1 hour at 20°C and almost all potency after 1 hour at 37°C

Contraindications

• Severe immunodeficiency (advanced HIV, leukaemia, lymphoma)
• Pregnancy
• Previous anaphylaxis to vaccine components (neomycin, gelatin)
• High-dose immunosuppressive therapy

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PART B: MR (MEASLES-RUBELLA) VACCINE

Background

• WHO regional goal for SEAR: Measles elimination + Rubella/CRS (Congenital Rubella Syndrome) control by 2020
• MR vaccine replaced the standalone measles vaccine in India's UIP

MR Campaign

• Launched: February 2017, starting from 5 States/UTs - Karnataka, Tamil Nadu, Goa, Lakshadweep and Puducherry
• Target: ~41 crore children aged 9 months to 15 years in phased manner
• MR campaign completed in 33 states; 32.36 crore children immunized (97.04% of target)

MR in Routine Immunization

• MR-1 at 9-12 months (replaces measles vaccine dose 1)
• MR-2 at 16-24 months (replaces measles vaccine dose 2)
• As per NTAGI (National Technical Advisory Group on Immunization) recommendations

Rubella Component Significance

• Rubella is a mild illness in children but causes Congenital Rubella Syndrome (CRS) when infection occurs in pregnant women - leading to:
  • Congenital heart defects
  • Cataracts / deafness
  • Microcephaly / intellectual disability

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Key Differences: Measles vs MR Vaccine

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Hepatitis B Vaccine

Type of Vaccine

• Active substance: HBsAg (Hepatitis B surface antigen) produced by recombinant DNA technology in yeast
• Available as:
  • Monovalent (Hepatitis B alone)
  • Combination - with DPT, Hib (as Pentavalent), Hepatitis A, IPV

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Schedule in India (NIS)

• India follows a 4-dose schedule (birth + 3 doses at 6, 10, 14 weeks)
• Minimum interval between doses: 4 weeks
• Only monovalent Hep B to be used at birth - combination vaccine not recommended at birth

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Dose, Route & Site

• Gluteal injection avoided - risk of fat deposition, poor seroconversion
• Intradermal route not recommended - immune response less reliable
• Birth dose can be given together with BCG but at different sites

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Why Give Birth Dose Within 24 Hours?

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Efficacy & Duration of Protection

• Duration of protection: at least 15 years, possibly lifelong
• No routine booster recommended for immunocompetent individuals

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Special Situations

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Storage

• Store at 2-8°C
• Do NOT freeze (freeze-sensitive vaccine)
• Does NOT interfere with immune response to other vaccines

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Contraindications

• Previous anaphylactic reaction to the vaccine
• No contraindication in pregnancy - safe to give to pregnant women

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COVID-19 Vaccines

Background

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Types / Classification of COVID-19 Vaccines

1. mRNA Vaccines

• Mechanism: Synthetic mRNA encoding the spike protein is delivered into host cells; cells produce spike protein → immune response generated
• Examples:
  • Tozinameran (BNT162b2) - Pfizer-BioNTech (Comirnaty)
  • mRNA-1273 - Moderna (Spikevax)
• Efficacy: ~90-95%
• Storage: Ultra-cold chain required (-70°C for Pfizer initially)

2. Viral Vector Vaccines (Non-replicating)

• Mechanism: Replication-deficient adenovirus vector delivers DNA encoding spike protein into host cells
• Examples:
  • AZD1222 - Oxford/AstraZeneca → manufactured as Covishield by Serum Institute of India (SII), Pune
  • Gam-COVID-Vac (Sputnik V) - Gamaleya Research Institute, Russia
  • Ad26.COV2.S - Janssen (J&J) - single dose
• Efficacy: ~70-90%

3. Inactivated Virus Vaccines

• Mechanism: Whole SARS-CoV-2 virus killed/inactivated → injected to stimulate immune response
• Examples:
  • BBV152 (Covaxin) - Bharat Biotech + ICMR/NIV, India - whole virion inactivated vaccine with Algel-IMDG adjuvant
  • BBIBP-CorV - Sinopharm, China
  • CoronaVac - Sinovac, China
• Efficacy: ~78% (Covaxin)
• Storage: 2-8°C (standard cold chain)

4. Protein Subunit Vaccines

• Mechanism: Purified spike protein fragments + adjuvant
• Examples:
  • Novavax (NVX-CoV2373)
  • Corbevax - Biological E, India (RBD protein-based)

5. DNA Vaccines

• Mechanism: Plasmid DNA encoding spike protein delivered intradermally
• Examples: GEMCOVAC-19 - Gennova Biopharmaceuticals, India (first mRNA vaccine approved in India)

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COVID-19 Vaccines in India

• Route: Intramuscular (IM), deltoid muscle, 0.5 ml
• Different COVID-19 vaccines are NOT interchangeable - complete the full schedule with the same vaccine

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Priority Groups for Vaccination (India)

1. Phase 1: Healthcare workers (HCWs)
2. Phase 2: Frontline workers (police, armed forces, municipal workers)
3. Phase 3: Persons >60 years → then 50-60 years
4. Phase 4: Persons <50 years with comorbidities
5. Subsequent phases: General population

• Registration via CoWIN platform; photo ID mandatory; QR-code certificate issued after completion

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Temporary Contraindications

• Active symptomatic SARS-CoV-2 infection
• Recent anti-SARS-CoV-2 monoclonal antibody or convalescent plasma therapy
• Severe allergic reaction to a previous COVID-19 vaccine dose

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Adverse Effects

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Key Points for Exam

• India's first indigenous COVID vaccine: Covaxin (BBV152)
• India's first mRNA vaccine: GEMCOVAC-19
• Covishield = Oxford-AstraZeneca formula manufactured by SII
• All COVID-19 vaccines target the spike (S) protein
• mRNA vaccines have highest efficacy (~95%) but require stringent cold chain

COVID-19 Vaccine - Simple & Easy to Remember

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याद करने का trick: "MIVSD"

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5 Types - Ek Line mein

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India ke 2 Main Vaccines (Most Important)

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Dose & Route (Dono ke liye same)

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Side Effects Trick: "FHMS"

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3 Lines jo zaroor likhna exam mein:

1. Covaxin = India's first indigenous COVID vaccine
2. All vaccines target the Spike (S) protein of SARS-CoV-2
3. Different COVID vaccines are NOT interchangeable

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Management of Status Epilepticus in Pediatrics

Definition

• Refractory SE (RSE): Seizures persisting despite 2 adequate AED doses
• Super-Refractory SE: SE continuing >24 hours despite anesthetic agents

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ALGORITHM (Time-Based)

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⏱ 0-5 MINUTES — STABILIZATION (ABCs)

A - Airway: Position, suction, oxygen (100% O2 by mask)
B - Breathing: Assess, assist ventilation if needed
C - Circulation: IV/IO access, cardiac monitor, pulse oximetry
D - Dextrose: Check blood glucose → if low give D25W 2 ml/kg IV
E - Exposure: Check temp, look for cause

• Blood glucose, serum electrolytes (Na, Ca, Mg), CBC, LFT, RFT
• AED levels (if on treatment), blood culture if febrile
• Toxicology screen if suspected poisoning

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⏱ 5-20 MINUTES — PHASE 1: EMERGENCY/INITIAL THERAPY

Lorazepam IV → 0.1 mg/kg/dose (MAX 4 mg/dose) Repeat once after 5 minutes if seizure continues

Midazolam IM/IN → 0.2 mg/kg (MAX 10 mg) OR Diazepam rectal → 0.5 mg/kg (MAX 10 mg)

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⏱ 20-40 MINUTES — PHASE 2: URGENT/ESTABLISHED SE THERAPY

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⏱ >40-60 MINUTES — PHASE 3: REFRACTORY SE

Admit to PICU - Intubate and ventilate Continuous EEG monitoring

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⏱ >24 HOURS — SUPER-REFRACTORY SE

• Continue anesthetic agents
• Consider: Ketogenic diet, Pyridoxine (if unknown etiology in infant), IVIG, Plasmapheresis, Hypothermia
• Investigate for autoimmune encephalitis (anti-NMDAR etc.)

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FLOWCHART SUMMARY

Seizure > 5 min
        ↓
    ABCs + Glucose
        ↓
   Lorazepam IV 0.1 mg/kg  ← (No IV: Midazolam IM/IN)
        ↓ seizure continues 5 min
   Repeat Lorazepam (max 2 doses)
        ↓ seizure continues (20 min)
   Levetiracetam / Fosphenytoin / Valproate / Phenobarbitone
        ↓ seizure continues (40 min) = REFRACTORY SE
   PICU + Intubate + Midazolam infusion / Pentobarbital
        ↓ seizure continues (>24 hr) = SUPER-REFRACTORY SE
   Ketamine / Ketogenic diet / Immunotherapy

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TREAT THE CAUSE (Always look for):

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Key Exam Points

1. SE = seizure >5 min (older definition was >30 min - now outdated)
2. Lorazepam = drug of choice if IV access available
3. Midazolam IM/IN = drug of choice if NO IV access
4. Levetiracetam preferred over phenytoin as 2nd line (safer profile)
5. Max 2 BZD doses - more doses = more respiratory depression
6. Refractory SE → PICU + intubation mandatory

Management of Status Epilepticus - Pediatrics

(With Hindi Mnemonics)

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Definition

याद करो: "Paanch minute baad - yeh emergency hai!" ⏱

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MNEMONIC 1: Initial Stabilization

"ABCDE - Ambulance Bulao, Check karo Dextrose, Expose karo"

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ALGORITHM (Time-Based)

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⏱ 0-5 MIN → "Pehle ABC Sambhalo"

• O2, IV access, glucose, monitoring
• Investigations: sugar, Na, Ca, CBC, cultures

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⏱ 5-20 MIN → PHASE 1: Benzodiazepines

MNEMONIC 2: BZD Choice

"IV hai toh → LO (Lorazepam), IV nahi toh → MID (Midazolam)"

⚠️ याद रखो: Maximum 2 BZD doses only! "Do baar diya, ab band karo - nahin toh saans band ho jaayega!" (Reason: Respiratory depression risk increases)

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⏱ 20-40 MIN → PHASE 2: Second-line AEDs

MNEMONIC 3: 2nd Line Drugs

"LFVPP - Lekin Fir Valproate Phenytoin Phenobarb"

याद करो: "Levetiracetam = Least side effects, Love it!"

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⏱ >40-60 MIN → PHASE 3: REFRACTORY SE

MNEMONIC 4: Refractory SE

"PICU Mein Jaao - MPK (Midazolam, Pentobarbital, Ketamine)"

Intubate karo, PICU mein admit karo, Continuous EEG lagao

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⏱ >24 HRS → SUPER-REFRACTORY SE

MNEMONIC 5:

"KKIP - Keto, Ketamine, Immunotherapy, Pyridoxine"

• Ketogenic diet
• Ketamine (continue)
• Immunotherapy (IVIG / Plasmapheresis) → autoimmune encephalitis socho
• Pyridoxine 100 mg IV (infants mein - B6 deficiency)

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FLOWCHART - Easy Version

Seizure > 5 min
      ↓
   ABCDE + Glucose
      ↓
  BZD × 2 doses MAX
  (Lorazepam IV / Midazolam IM)
      ↓ abhi bhi chal raha hai (20 min)
  LFVPP - ek choose karo
  (Levetiracetam preferred)
      ↓ abhi bhi chal raha hai (40 min)
  PICU + Intubate + MPK infusion
      ↓ abhi bhi chal raha hai (>24 hr)
  KKIP

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TREAT THE CAUSE → "HHHeat Mein PPMP"

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EXAM KE LIYE 5 GOLDEN POINTS 🏆

1. SE = >5 min (purana definition 30 min tha - ab outdated)
2. IV hai → Lorazepam | IV nahi → Midazolam IM
3. Max 2 BZD doses - respiratory depression ka dar
4. Levetiracetam = best 2nd line (safest, least interactions)
5. Refractory SE = PICU + Intubate - ghar pe manage nahi hoga

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Febrile Seizures - Pediatrics (10 Marks)

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1. DEFINITION

Trick: "Fever ke saath 6 month se 5 saal ke bacche mein seizure = Febrile Seizure"

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2. EPIDEMIOLOGY

• Most common seizure type in children
• Affects 2-5% of children between 6 months and 5 years
• 25-33% (1/3rd) will have a recurrence
• Slightly more common in boys
• Strong family history component (polygenic inheritance)

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3. TYPES

MNEMONIC: "Simple = SIGN (Short, Isolated, Generalized, Normal)"

Symptomatic FS: Occurs in children with pre-existing neurological abnormality or acute CNS illness (meningitis, encephalitis)

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4. ETIOLOGY / PRECIPITATING CAUSES

"Seizure usually occurs during the rapid RISE of temperature, not at peak"

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5. PATHOPHYSIOLOGY

• Immature brain (6 months - 5 years) has lower seizure threshold
• Fever lowers seizure threshold further via:
  • Cytokine release (IL-1β, IL-6) → neuronal hyperexcitability
  • Increased neuronal metabolic demand
  • Ion channel dysfunction (Na⁺ channels - SCN1A mutations in GEFS+)
• Genetic predisposition plays a key role

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6. RISK FACTORS FOR RECURRENCE

MNEMONIC: "FAYD - Fever phir aayega, Age chhoti hai, Young age, Duration chhota tha"

• 1 risk factor → ~30% recurrence
• 2 risk factors → ~50% recurrence
• 3+ risk factors → ~70-75% recurrence

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7. RISK FACTORS FOR EPILEPSY LATER

MNEMONIC: "FND - Family, Neurological abnormality, Deviant (Complex) seizure"

⚠️ Only 2-3% of all febrile seizure children develop epilepsy (6-fold increased risk vs general population)

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8. INVESTIGATIONS

Simple Febrile Seizure:

• NO routine blood work, EEG, neuroimaging required
• Investigate for source of fever (urine, throat swab etc.)
• Lumbar puncture: NOT routine; consider if:
  • Age <6 months
  • Child NOT fully immunized (especially Hib, Pneumococcal)
  • Signs of meningitis (neck stiffness, bulging fontanelle, Kernig's, Brudzinski's)
  • Pretreated with antibiotics (can mask meningitis)
  • Child looks ill / doesn't return to baseline

Complex Febrile Seizure:

• EEG if focal features or recurrent within 24 hours
• MRI brain if focal, Todd's palsy, prolonged post-ictal
• Blood glucose, electrolytes, LP if indicated

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9. MANAGEMENT

A. Acute Management (During Seizure)

Step 1: ABCDE - Airway, Breathing, O2, IV access
Step 2: Check blood glucose
Step 3: Identify and treat source of fever
Step 4: Antipyretics - Paracetamol 15 mg/kg OR Ibuprofen

B. Fever Control

• Paracetamol 15 mg/kg/dose every 4-6 hours
• Ibuprofen 10 mg/kg/dose every 6-8 hours
• Tepid sponging
• ⚠️ Note: Aggressive antipyretics do NOT prevent febrile seizure recurrence

C. Prophylaxis

AAP guideline: Long-term AED prophylaxis is NOT recommended for simple febrile seizures

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10. PARENTAL COUNSELLING (Important for 10 marks!)

"REASSURE the parents - yeh bacche ka career kharab nahi karega!"

1. Febrile seizures are benign - do not cause brain damage
2. Risk of recurrence: >33% - prepare them
3. Risk of epilepsy: very low (<3%) for simple FS
4. Normal development - no effect on intelligence or behaviour
5. What to do during seizure:
   • Place child on side (recovery position)
   • Do NOT put anything in mouth
   • Do NOT restrain
   • Time the seizure
   • Call ambulance if seizure >5 minutes
6. Antipyretics should be given promptly with any fever
7. No restriction on physical activity or schooling

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11. PROGNOSIS

"Simple febrile seizure = benign, self-limiting, excellent prognosis"

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QUICK REVISION TABLE

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Differential Diagnosis of Seizure Disorders in Childhood

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INTRODUCTION

Key question to ask: "Loss of consciousness tha? Postictal phase tha? EEG kya hai?"

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CLASSIFICATION OF SEIZURE MIMICS

MNEMONIC: "BSPMM C" - "Bacche Seizure Pakad Mein Matsya Catch"

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PART 1: CAUSES OF TRUE SEIZURES IN CHILDHOOD

A. Diffuse Brain Dysfunction

B. Focal Brain Dysfunction

C. Epilepsy Syndromes

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PART 2: NON-EPILEPTIC EVENTS - DIFFERENTIAL DIAGNOSIS TABLE

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GROUP 1: SYNCOPE AND ANOXIC EVENTS

⚠️ Cardiogenic syncope mein EEG normal hoga - ECG zaroor karo!

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GROUP 2: BEHAVIORAL / PSYCHOLOGICAL / PSYCHIATRIC

PNES vs Absence seizure: Absence = brief 5-30 sec, cannot interrupt, 3 Hz spike-wave on EEG PNES = prolonged, eyes closed (eyes are OPEN in absence), normal EEG

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GROUP 3: SLEEP-RELATED CONDITIONS

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GROUP 4: PAROXYSMAL MOVEMENT DISORDERS

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GROUP 5: MIGRAINE-ASSOCIATED DISORDERS

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GROUP 6: MISCELLANEOUS

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KEY DIFFERENTIATING FEATURES: EPILEPSY vs MIMICS

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INVESTIGATIONS TO DIFFERENTIATE

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SUMMARY MNEMONIC: "BSPMMC" - Yeh Sab Epilepsy Nahi Hain!"

B - Breath-holding spells / Behavioral (PNES)
S - Syncope (vasovagal, cardiogenic)
P - Paroxysmal movement disorders (tics, stereotypies)
M - Migraine variants (confusional, hemiplegic, vertigo)
M - Myoclonus / Movement (shudder, startle)
C - Cardiac arrhythmias / Cough syncope

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Sodium Valproate - Pediatrics

Dose Range & Adverse Drug Reactions (ADRs)

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1. BASIC PHARMACOLOGY

याद करो Mechanism: "GABA badhao, Na channel band karo, Ca rok lo"

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2. INDICATIONS IN PEDIATRICS

"Valproate = Very All-round Leader - koi bhi seizure ho, kaam aata hai!"

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3. DOSE RANGE (PEDIATRICS)

A. Oral (PO) - Seizures

B. Intravenous (IV) - Status Epilepticus

C. Rectal (PR) - When IV/PO not possible

D. Therapeutic Drug Monitoring

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4. ADVERSE DRUG REACTIONS (ADRs)

MNEMONIC: "VALPRO HATE"

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A. GI Side Effects (Most Common, Early)

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B. Hepatotoxicity ⚠️ (BLACK BOX WARNING)

"2 saal se chhote bacche mein valproate dene se pehle SOCH lo!"

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C. CNS Side Effects

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D. Hematological

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E. Metabolic & Endocrine

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F. Teratogenicity ⚠️ (MOST IMPORTANT IN EXAM)

"Valproate pregnancy mein = NEVER - Neural tube defect guarantee!"

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G. Miscellaneous

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5. CONTRAINDICATIONS

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6. DRUG INTERACTIONS

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7. MONITORING

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QUICK SUMMARY TABLE

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Acute Bacterial Meningitis - Pediatrics (10 Marks)

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1. DEFINITION

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2. ETIOLOGY (Age-Based)

MNEMONIC by Age: "GEL → HNS → NPS"

याद करो: "Neonates mein GEL - Group B, E.coli, Listeria. Bade bacche mein SNH - Strep, Neisseria, H.flu"

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3. PREDISPOSING FACTORS

• Otitis media (most common predisposing condition)
• Sinusitis, mastoiditis
• Basilar skull fracture (CSF leak → pneumococcal)
• Sickle cell disease (functional asplenia → encapsulated organisms)
• Immunodeficiency (HIV, complement deficiency)
• Neurosurgery / CSF shunts
• Crowding / close contact (meningococcal)
• Unvaccinated children

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4. PATHOGENESIS

MNEMONIC: "CABIN" - Colonize → Attach → BBB Break → Inflammation → Neurological damage

Step 1: COLONIZATION
Organism colonizes nasopharynx/upper respiratory tract
        ↓
Step 2: BACTEREMIA
Invasion of bloodstream → sustained bacteremia
        ↓
Step 3: BLOOD-BRAIN BARRIER (BBB) BREACH
Organisms cross BBB via:
  • Transcytosis through endothelial cells
  • Paracellular route (tight junction disruption)
  • Via infected leukocytes (Trojan horse)
        ↓
Step 4: SUBARACHNOID SPACE INVASION
Bacteria replicate in CSF (poor host defenses - low Ig, complement)
        ↓
Step 5: INFLAMMATORY CASCADE
Bacterial components (LPS, teichoic acid) → TLR activation →
  ↑ IL-1, IL-6, TNF-α, IL-8 →
  Neutrophil recruitment → pus formation
        ↓
Step 6: CONSEQUENCES
• ↑ BBB permeability → Vasogenic cerebral oedema
• ↑ CSF production + outflow obstruction → Hydrocephalus
• Cytotoxic oedema → Cerebral ischaemia
• Vasculitis → Thrombosis → Infarction
• ↑ ICP → Brain herniation
• Cranial nerve damage → Hearing loss, nerve palsies

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5. CLINICAL FEATURES

Age-Based Presentation (VERY IMPORTANT):

A. Neonates (<1 month) - "Non-specific signs"

B. Infants (1-12 months)

C. Older Children (>18 months) - Classic Triad

MNEMONIC: "FHN - Fever, Headache, Neck stiffness"

D. Meningeal Signs

E. Specific Signs by Organism

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6. INVESTIGATIONS

A. CSF Analysis (Gold Standard)

याद करो CSF: "Bacterial = Turbid, ↑WBC (neutro), ↑Protein, ↓Glucose"

B. Blood Investigations

C. Bacterial Meningitis Score (Kuppermann)

• CSF protein ≥80 mg/dL
• CSF absolute neutrophil count ≥1000 cells/mm³
• CSF glucose <34 mg/dL
• Positive blood culture
• Positive CSF Gram stain

Score ≥1 = bacterial more likely

D. Imaging

• CT head before LP: Only if papilledema, focal neuro deficit, or altered consciousness (risk of herniation)
• MRI brain: Detects complications (abscess, infarct, empyema, ventriculitis)

E. When to Do LP Immediately (No CT needed)

• Age >1 year
• No papilledema
• No focal neurological signs
• Not comatose

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7. TREATMENT

A. Empiric Antibiotic Therapy

⚠️ Golden Rule: START ANTIBIOTICS IMMEDIATELY - do not delay for LP!

Why Vancomycin + Ceftriaxone? Penicillin/cephalosporin-resistant pneumococcus is increasing - vancomycin provides coverage

B. Duration of Antibiotic Therapy

C. Adjunctive Dexamethasone

"Dexamethasone pehle dena - antibiotics ke saath ya pehle, baad mein nahi!"

D. Supportive Management

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8. COMPLICATIONS

MNEMONIC: "DISHES H" - Yeh sab hota hai meningitis ke baad!

• Visual impairment
• Cognitive impairment / learning disabilities
• Cerebral abscess
• DIC (especially meningococcal)
• Waterhouse-Friderichsen syndrome: bilateral adrenal haemorrhage in meningococcaemia → adrenal crisis

Predictors of Poor Outcome:

• Coma at presentation
• Seizures
• Shock / respiratory distress
• Neutropenia
• High CSF protein
• Low CSF WBC (poor host response)
• S. pneumoniae as causative organism

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9. PROPHYLAXIS / PREVENTION

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QUICK REVISION SUMMARY

ETIOLOGY:    Neonate = GBS, E.coli, Listeria
             Child   = Pneumo, Meningo, H.flu

CLASSIC TRIAD (>18 months): Fever + Headache + Neck stiffness
NEONATE TRIAD: Bulging fontanelle + Irritability + Poor feeding

CSF:        Turbid | ↑WBC (PMN) | ↑Protein | ↓Glucose

TREATMENT:  Neonate   = Ampicillin + Gentamicin
            Child     = Vancomycin + Ceftriaxone
            Steroid   = Dexamethasone 0.15 mg/kg Q6h (before/with first ABx)

COMPLICATION: DISHES H
              (Deafness, ICP↑, Subdural, H.loss, Epilepsy, Sepsis, Hemiplegia)

Acute Bacterial Meningitis - Story Mnemonic 🎭

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🎬 THE STORY: "Gabbar Ki Galti"

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CHAPTER 1: ETIOLOGY - "Gabbar, Ek Lauta Villain"

Ek gaon mein teen khatarnak daku the:

🦹 "Gabbar, Ek Lauta"

• Group B Strep
• E. coli
• Listeria

🦹 "Sher, Neela, Haathi"

• Streptococcus pneumoniae ← SABSE KHATARNAK
• Neisseria meningitidis ← RASH wala
• Haemophilus influenzae ← Ab vaccine se khatam

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CHAPTER 2: PATHOGENESIS - "Gabbar Ne Naka Toda"

Gabbar pehle gaon mein ghusa (naak mein), phir khoon mein ghus gaya, phir dimaag ki deewar tod ke andar ghus gaya...

🏘️  NAAK → nasopharynx colonization
        ↓
🩸  KHOON → bacteremia
        ↓
🧱  DEEWAR TODI → Blood-Brain Barrier breach
        ↓
🧠  DIMAAG MEIN → CSF invasion, bacteria multiply
        ↓
🔥  AATISHBAAZI → Inflammatory cascade (IL-1, TNF, neutrophils)
        ↓
💥  TABAHI → Oedema + ↑ICP + Infarct + Nerve damage

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CHAPTER 3: CLINICAL FEATURES - "Teeno Symptoms Aaye Ek Saath"

Bade bacche mein:

🎯 "FHN - Fever, Headache, Neck" "Fever aaya, Head phata, Neck akad gayi"

Neonates mein - "Baccha Rone Laga, Rota Nahi, Khaata Nahi"

🍼 Chhota baccha bolta nahi - toh woh kaise batayega meningitis hai?

• Poor feeding - "Doodh nahi pi raha"
• Irritability / High cry - "Rota rehta hai"
• Bulging fontanelle - "Sir ubhar gaya"
• Temperature unstable - "Kabhi garam kabhi thanda"
• ⚠️ Neck stiffness NAHI hoti chhote bacchon mein!

Meningococcal special:

🔴 "Neela-Neisseria ne body pe DAAG lagaye" Petechial → Purpuric rash = EMERGENCY RUN TO ICU!

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CHAPTER 4: KERNIG & BRUDZINSKI - "Dono Bhai Ki Kahaani"

👨‍👦 Kernig bhaiya: "Main ghutna nahi modne dunga!" Flex hip + knee → Resistance on knee extension

👦 Brudzinski chhote: "Bhaiya ka sir neeche gaya toh mere pair bhi uth gaye!" Flex neck → Involuntary knee flexion

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CHAPTER 5: CSF - "Gabbar Ka Darbaar"

Gabbar ke darbaar mein jaake dekho kya mila:

🎯 Trick: "Bacterial = Badmash CSF: Ganda, Bhara (↑WBC), Protein zyada, Glucose khatam"

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CHAPTER 6: TREATMENT - "Police Aayi - Vancomycin aur Ceftriaxone"

👮 Do inspector aaye Gabbar ko pakadne:

🚔 "VAN + CEFT"

• Vancomycin 15 mg/kg Q6h ← Resistant pneumo ke liye
• Ceftriaxone 50 mg/kg Q12h ← Main weapon

🚔 "AMP + GENT"

• Ampicillin ← Listeria cover
• Gentamicin ← Gram negative cover

💊 "Dex pehle aata hai, antibiotics se PEHLE ya SAATH mein" Dexamethasone 0.15 mg/kg Q6h × 4 days (Baad mein diya toh kaam nahi karega!)

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CHAPTER 7: COMPLICATIONS - "Gabbar Ke Jaane Ke Baad Bhi Takleef"

🎭 STORY: "Police ne Gabbar ko pakad liya, lekin gaon mein jo tabahi hui woh reh gayi..."

"DISHES" - Ek hotel ki kahaani

🏨 "DISHES Hotel mein yeh sab hua":

💀 Waterhouse-Friderichsen syndrome = "Neisseria ne adrenal gland pe bhi hamla kar diya" → Bilateral adrenal haemorrhage → Adrenal crisis

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CHAPTER 8: PREVENTION - "Vaccine Ne Gabbar Ko Pahle Hi Rok Diya"

🛡️ "Agar vaccine dete toh Gabbar aata hi nahi!"

• Hib vaccine → H. influenzae khatam ✅
• PCV13 → Pneumococcal ↓↓ ✅
• Meningococcal vaccine → Neisseria ↓ ✅
• Rifampin → Close contacts ko bachao (prophylaxis)

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🏆 FINAL BOSS SUMMARY CARD

😈 VILLAIN:    Neonate = GEL | Child = SNH
🗺️  PATH:       Naak → Khoon → BBB → Dimaag → Tabahi
🤒 SIGNS:      FHN (Fever+Head+Neck) | Neonate = Bulge+Cry+No feed
🔬 CSF:        Ganda + ↑PMN + ↑Protein + ↓Glucose
💊 TREAT:      Child = VAN+CEFT | Neonate = AMP+GENT
               Dex = Pehle dena!
💥 COMPL:      DISHES (Deaf, ICP, Subdural, Hemi, Epilepsy, Sepsis)
🛡️  PREVENT:   Hib + PCV + Meningo vaccine