1. B
Inferior STEMI shows ST elevation in leads II, III, aVF.

2. C
Classic presentation of acute cardiogenic pulmonary edema includes dyspnea, pink frothy sputum, crackles, and S3 gallop.

3. B
Serum paracetamol level is essential for risk assessment using the nomogram.

4. A
Non-contrast CT brain is first-line to exclude subarachnoid hemorrhage.

5. B
Impending respiratory failure in status asthmaticus requires intubation.

6. C
Status epilepticus is seizure activity >5 minutes or recurrent without recovery.

7. B
Epiglottitis presents with fever, drooling, stridor, and tripod positioning.

8. B
Acute tearing chest pain radiating to back and unequal arm BPs suggests aortic dissection.

9. A
Classic presentation of appendicitis is RLQ pain, fever, and guarding.

10. A
Placenta previa causes painless vaginal bleeding in pregnancy.

11. B
Wernicke’s encephalopathy is due to thiamine deficiency in alcoholics.

12. C
Immediate decompression is required for tension pneumothorax after trauma.

13. B
Septic shock defined by hypotension, high lactate, and infection.

14. B
IV thrombolysis is indicated within 4.5 hours if no hemorrhage.

15. C
Pelvic binder stabilizes pelvic fracture and reduces bleeding.

16. B
Absent cremasteric reflex is a key sign of testicular torsion.

17. C
Small cell carcinoma is most common central lung tumor in smokers.

18. B
Toxic shock syndrome presents with fever, rash, hypotension, desquamation.

19. B
Esophageal varices cause hematemesis in alcoholics with portal hypertension.

20. B
Severe pain out of proportion to exam with AF suggests mesenteric ischemia.

21. A
Croup presents with barking cough, stridor, and low-grade fever.

22. B
Acute angle-closure glaucoma presents with painful red eye and raised IOP.

23. C
Positive pregnancy, abdominal pain, shoulder pain, and bleeding = ectopic.

24. A
Pneumonia presents with fever, productive cough, pleuritic pain, consolidation.

25. A
Radial nerve injury is associated with midshaft humeral fractures.

26. B
Necrotizing fasciitis presents with severe pain out of proportion and sepsis.

27. B
Beck’s triad of tamponade: hypotension, muffled heart sounds, JVD.

28. C
Melena usually originates from an upper GI bleed.

29. C
CT brain first to rule out raised ICP, then lumbar puncture for meningitis.

30. A
Wernicke’s encephalopathy triad: ataxia, ophthalmoplegia, confusion.