Critical Care MCQs Posted by Pujari Vinod Date August 26, 2025 Comments 0 comment Welcome to your Critical Care MCQs Name Email 1. Daily sedation interruption in ICU reduces ? Mortality Ventilator days Infection risk Delirium None 2. Dobutamine is used in cardiogenic shock because ? Increases SVR Improves CO with slight vasodilation Decreases HR Reduces renal flow None 3. A 60-year-old on mechanical ventilation has auto-PEEP. The best ventilator adjustment is ? Increase tidal volume Decrease respiratory rate Increase inspiratory time Add dead space None 4. Procalcitonin is useful in ? Diagnosing pulmonary embolism Monitoring bacterial sepsis Detecting fungal infection Detecting hypoglycemia None 5. Recommended blood glucose target in ICU ? 80–110 mg/dL 140–180 mg/dL <70 mg/dL 200–250 mg/dL None 6. After cardiac arrest, neurologic outcome improves with ? Hyperventilation Targeted temperature management Steroids Phenytoin None 7. A patient is hypovolemic. Which hemodynamic finding suggests this ? High CVP Variation of systolic BP with ventilation High PCWP Low SVR None 8. Hyperkalemia with ECG changes is best treated initially with ? Insulin + glucose Kayexalate Calcium gluconate Hemodialysis None 9. Palliative sedation is used for ? Cure Relief of refractory symptoms at end of life Improving survival Preventing infection None 10. Severe Tricyclic Antidepressant (TCA) overdose (wide QRS) is treated with ? Calcium gluconate Insulin Sodium bicarbonate Heparin None 11. In cardiogenic shock, IABP works by ? Reducing preload Decreasing afterload & improving coronary perfusion Increasing SVR Improving contractility directly None 12. Mannitol works in raised ICP by ? Reducing CSF production Osmotic diuresis reducing brain volume Vasodilation of cerebral vessels Increasing CPP None 13. Antidote for organophosphate poisoning ? Atropine + pralidoxime Flumazenil Naloxone Physostigmine None 14. The order not to perform CPR is ? Living will Advance directive DNR order Withdrawal of support None 15. The first step in managing an unconscious patient with absent gag reflex is ? Insert nasogastric tube Insert oral airway and assess for need of intubation Start chest compressions Give IV sedatives immediately None 16. Refeeding syndrome commonly causes ? Hypokalemia Hypophosphatemia Hypercalcemia Hyperuricemia None 17. In unstable patient suspected of PE, best diagnostic tool ? CT pulmonary angiogram D-dimer Bedside echocardiography V/Q scan None 18. 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 19. First-line management of status epilepticus is ? Phenobarbital IV lorazepam/midazolam Phenytoin loading General anesthesia None 20. Warm peripheries and bounding pulse in shock suggest ? Hypovolemic shock Cardiogenic shock Distributive shock Obstructive shock None 21. Brain death is diagnosed by ? Isoelectric EEG only Absent brainstem reflexes + apnea test Absent limb reflexes Flat ECG None 22. The target CPP in TBI is ? 30–40 mmHg 50–70 mmHg >100 mmHg <40 mmHg None 23. The most common cause of distributive shock in the ICU is ? Sepsis Anaphylaxis Neurogenic shock Addisonian crisis None 24. Antidote for benzodiazepine overdose is ? Atropine Naloxone Flumazenil Physostigmine None 25. The Swan-Ganz catheter is most useful for ? Measuring systemic vascular resistance Directly measuring LV end-diastolic pressure Identifying brain perfusion Monitoring lactate None 26. Carbon monoxide poisoning is treated with ? 100% O₂ or hyperbaric O₂ NAC Sodium thiosulfate IV antibiotics None 27. Antidote for paracetamol poisoning is ? Atropine N-acetylcysteine Vitamin K Sodium bicarbonate None 28. Pulseless VT/VF should be treated first with ? Atropine Defibrillation Lidocaine Epinephrine None 29. The most common ICU electrolyte abnormality is ? Hypocalcemia Hyponatremia Hypokalemia Hypermagnesemia None 30. In severe pancreatitis, nutrition should be given via ? NPO + TPN Early enteral feeding (nasojejunal) Parenteral lipids only Clear fluids None Share: Pujari Vinod Next post Internal Medicine MCQs September 1, 2025 You may also like Fellowship Courses Without NEET PG: A credible career path for MBBS doctors January 22, 2026 Fellowship Courses After MBBS in India: A Practical Career Guide December 26, 2025 Top International Certification Programs for Indian Doctors June 5, 2025
