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Short and accurate answer

Case 4: Acute Respiratory Viral Infection (ARVI) in a 3-year-old child
Station 1
  1. Diagnosis: Acute respiratory viral infection (ARVI) with pharyngitis and fever (38.8°C)
  2. P-medication: Paracetamol (acetaminophen) — for fever + symptomatic relief (no antivirals/antibiotics indicated for uncomplicated viral URTI)
  3. Dosage form: Oral suspension (syrup) — appropriate for a 3-year-old
  4. Dosage: 15 mg/kg per dose → for an average 3-year-old (~15 kg): 225 mg per dose, every 4–6 hours as needed (max 4 doses/day)
Station 2
  1. Pharmacokinetics:
    • Absorption: Rapid and complete from GI tract
    • Distribution: Widely distributed; crosses BBB
    • Metabolism: Liver (glucuronidation/sulfation; toxic metabolite NAPQI at overdose)
    • Elimination: Renal; t½ ≈ 2–3 hours
  2. Mechanism of action: Inhibits prostaglandin synthesis centrally (COX inhibition in CNS); antipyretic via hypothalamic heat-regulating center; analgesic via central and possibly endocannabinoid pathways. No peripheral anti-inflammatory effect.
  3. Prescription:
Rp: Paracetamol susp. 120 mg/5 mL — 100 mL
D.S. Give 10 mL (240 mg) orally every 6 hours
     when temperature > 38.5°C or pain present.
     Do not exceed 4 doses per day.
Station 3
  1. Duration of treatment: 3–5 days (symptomatic use only; not scheduled — use only when febrile/in pain)
  2. Side effects:
    • Hepatotoxicity (overdose → NAPQI accumulation)
    • Rare: allergic reactions, thrombocytopenia, nephrotoxicity (chronic use)
  3. Contraindications:
    • Severe hepatic impairment
    • Known hypersensitivity to paracetamol
    • Concurrent use of other paracetamol-containing products (overdose risk)

Mujhy accurate diagnose k sath sahi answer dena ma question send krungi or short answers

Bilkul! Question bhejo — main accurate diagnosis ke saath short aur clear answers dunga. ✓
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CARD No. 11 — Clinical Pharmacology
Q1. Mechanism & Spectrum of Action, Side Effects, Contraindications, and Indications for Dopamine, α- and β-adrenergic receptors

Dopamine

Mechanism:
  • Low dose (1–3 µg/kg/min): D1 receptors → renal/mesenteric vasodilation
  • Medium dose (3–10 µg/kg/min): β1 receptors → ↑ HR, ↑ contractility
  • High dose (>10 µg/kg/min): α1 receptors → vasoconstriction, ↑ BP
Indications: Cardiogenic shock, septic shock, acute heart failure
Side effects: Tachycardia, arrhythmias, hypertension, tissue necrosis (extravasation)
Contraindications: Pheochromocytoma, ventricular fibrillation, thyrotoxicosis

α-Adrenergic Stimulants (e.g., Norepinephrine, Phenylephrine)

Mechanism: Stimulate α1 receptors → vasoconstriction → ↑ BP
Indications: Hypotension, shock, nasal decongestant (α1)
Side effects: Hypertension, reflex bradycardia, peripheral ischemia
Contraindications: Severe hypertension, atherosclerosis, pregnancy

β-Adrenergic Stimulants (e.g., Adrenaline/Epinephrine, Salbutamol)

Mechanism:
  • β1: ↑ HR, ↑ contractility
  • β2: Bronchodilation, uterine relaxation, vasodilation
Indications: Anaphylaxis (β1+β2), bronchial asthma (β2), cardiac arrest (β1)
Side effects: Tachycardia, tremor, hypokalemia, hyperglycemia
Contraindications: Tachyarrhythmias, ischemic heart disease, hyperthyroidism
Q2. Mechanism & Spectrum of Action, Side Effects, Contraindications, Interactions, and Indications for Diuretics

Loop Diuretics (Furosemide)

Mechanism: Block Na⁺/K⁺/2Cl⁻ co-transporter in Loop of Henle → ↑ urine output
Indications: Pulmonary edema, heart failure, hypertension, renal failure
Side effects: Hypokalemia, hyponatremia, ototoxicity, dehydration
Contraindications: Anuria, severe hypokalemia, hypersensitivity to sulfonamides
Interactions: ↑ toxicity with aminoglycosides (ototoxicity); ↓ effect of antidiabetics

Thiazide Diuretics (Hydrochlorothiazide)

Mechanism: Block Na⁺/Cl⁻ transporter in distal tubule
Indications: Hypertension, mild heart failure, nephrolithiasis (calcium stones)
Side effects: Hypokalemia, hyperuricemia, hyperglycemia, hyperlipidemia
Contraindications: Gout, severe renal failure, pregnancy

K⁺-Sparing Diuretics (Spironolactone)

Mechanism: Aldosterone antagonist → ↑ Na⁺ excretion, ↓ K⁺ loss
Indications: Heart failure, hyperaldosteronism, liver cirrhosis with ascites
Side effects: Hyperkalemia, gynecomastia, menstrual irregularities
Contraindications: Hyperkalemia, renal failure, Addison's disease
Short, exam-ready. ✓
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Case 12 — 58-year-old, HR 230 bpm, SVT on ECG, hx of asthma + CAD + HTN
Station 1
1. Diagnosis: Paroxysmal Supraventricular Tachycardia (SVT) — reciprocal AV supraventricular tachycardia, HR 230 bpm; background: CAD (posterior-diaphragmatic MI scar), hypertension, asthma
2. P-medication: Verapamil (IV) (β-blockers contraindicated due to asthma; adenosine is 2nd option)
3. Dosage form: Solution for IV injection (5 mg/2 mL)
4. Dosage: 5–10 mg IV slowly over 2–3 minutes; repeat 5 mg after 15–30 min if needed (max 20 mg)
Station 2
5. Pharmacokinetics:
  • Absorption: IV → immediate onset
  • Protein binding: ~90%
  • Metabolism: Liver (CYP3A4) → active metabolite norverapamil
  • Elimination: Renal 70%; t½ ≈ 6–12 hours
6. Mechanism of action: Calcium channel blocker (non-dihydropyridine) → blocks L-type Ca²⁺ channels in AV node → slows AV conduction → terminates re-entry SVT circuit → restores sinus rhythm
7. Prescription:
Rp: Sol. Verapamili 0.25% — 2 mL (5 mg)
D.t.d. No. 3 in amp.
S. 5–10 mg IV slowly over 3 min
   under ECG monitoring.
   Repeat after 15–30 min if needed.
Station 3
8. Duration of treatment: Single acute dose for SVT termination; maintenance oral verapamil 40–80 mg TID for prophylaxis if recurrent
9. Side effects:
  • Hypotension, bradycardia, AV block
  • Constipation (oral use)
  • Dizziness, flushing
  • Negative inotropy (caution in heart failure)
10. Contraindications:
  • WPW syndrome (may accelerate accessory pathway)
  • Severe bradycardia / sick sinus syndrome
  • 2nd–3rd degree AV block
  • Severe LV dysfunction / cardiogenic shock
  • Concurrent β-blocker IV use (risk of asystole)

What is TID

TID = Ter in die (Latin) = 3 times a day
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