Critical Care MCQs Posted by Dr Vinod Date August 26, 2025 Comments 0 comment Welcome to your Critical Care MCQs Name Email 1. Early goal-directed therapy is aimed at optimizing ? Liver perfusion Tissue oxygen delivery Fluid overload Cardiac arrhythmias None 2. Carbon monoxide poisoning is treated with ? 100% O₂ or hyperbaric O₂ NAC Sodium thiosulfate IV antibiotics None 3. The earliest finding in sepsis is ? Hypotension Tachycardia Oliguria Elevated bilirubin None 4. In COPD exacerbation (pH 7.25, PaCO₂ 65, PaO₂ 55) best initial therapy is ? Continue O₂ only Non-invasive ventilation Intubation Bronchoscopy None 5. A patient is hypovolemic. Which hemodynamic finding suggests this ? High CVP Variation of systolic BP with ventilation High PCWP Low SVR None 6. Daily sedation interruption in ICU reduces ? Mortality Ventilator days Infection risk Delirium None 7. The most common cause of AKI in critically ill patients is ? Post-renal obstruction Pre-renal azotemia/ischemia Glomerulonephritis Nephrolithiasis None 8. Severe Tricyclic Antidepressant (TCA) overdose (wide QRS) is treated with ? Calcium gluconate Insulin Sodium bicarbonate Heparin None 9. Lactic acidosis most commonly results from ? Liver failure Tissue hypoxia from sepsis Hyperventilation Hypokalemia None 10. The Swan-Ganz catheter is most useful for ? Measuring systemic vascular resistance Directly measuring LV end-diastolic pressure Identifying brain perfusion Monitoring lactate None 11. Hallmark of tension pneumothorax is ? Bilateral wheeze Tracheal deviation + hypotension Crepitations Tachycardia only None 12. The order not to perform CPR is ? Living will Advance directive DNR order Withdrawal of support None 13. Antidote for organophosphate poisoning ? Atropine + pralidoxime Flumazenil Naloxone Physostigmine None 14. Rescue therapy for severe ARDS with refractory hypoxemia is ? Steroids ECMO Tracheostomy Bronchodilators None 15. Antidote for paracetamol poisoning is ? Atropine N-acetylcysteine Vitamin K Sodium bicarbonate None 16. In septic shock, recommended initial fluid resuscitation is ? 4 mL/kg 10 mL/kg 30 mL/kg 60 mL/kg None 17. Warm peripheries and bounding pulse in shock suggest ? Hypovolemic shock Cardiogenic shock Distributive shock Obstructive shock None 18. CRRT is preferred over intermittent dialysis for Stable patients Hemodynamically unstable patients Outpatient dialysis Rapid correction of hyperkalemia None 19. Mannitol works in raised ICP by ? Reducing CSF production Osmotic diuresis reducing brain volume Vasodilation of cerebral vessels Increasing CPP None 20. Pulseless VT/VF should be treated first with ? Atropine Defibrillation Lidocaine Epinephrine None 21. Oxygen delivery device that provides most precise FiO₂ ? Nasal cannula Simple mask Venturi mask Non-rebreather None 22. The earliest marker of myocardial ischemia is ? CK-MB Troponin I ECG changes LDH None 23. Brain death is diagnosed by ? Isoelectric EEG only Absent brainstem reflexes + apnea test Absent limb reflexes Flat ECG None 24. In unstable patient suspected of PE, best diagnostic tool ? CT pulmonary angiogram D-dimer Bedside echocardiography V/Q scan None 25. After cardiac arrest, neurologic outcome improves with ? Hyperventilation Targeted temperature management Steroids Phenytoin None 26. Hyperkalemia with ECG changes is best treated initially with ? Insulin + glucose Kayexalate Calcium gluconate Hemodialysis None 27. Recommended blood glucose target in ICU ? 80–110 mg/dL 140–180 mg/dL <70 mg/dL 200–250 mg/dL None 28. The best ventilatory strategy for status asthmaticus includes ? High tidal volume with high rate Low tidal volume with prolonged expiratory time Zero PEEP with high FiO₂ High inspiratory flow with prolonged inspiratory time None 29. Caloric need of critically ill patient ? 10 kcal/kg/da 15 kcal/kg/da 25 kcal/kg/da 40 kcal/kg/da None 30. In severe pancreatitis, nutrition should be given via ? NPO + TPN Early enteral feeding (nasojejunal) Parenteral lipids only Clear fluids None Share: Dr Vinod Next post Internal Medicine MCQs September 1, 2025 You may also like Is Working in a Tier 2 City Actually Better for Indian Doctors in 2026? July 28, 2026 India’s ICU Capacity Crisis : What It Means for Doctors and Patients in 2026 July 27, 2026 Fellowship Courses Without NEET PG: A credible career path for MBBS doctors January 22, 2026
