A 49-year-old man with sudden, severe headache and then fainted, slow irregular breathing, blood pressure 190/94, and pulse 50 is MOST likely to have:

• A. Myocardial infarction
• B. A ruptured cerebral artery
• C. Tension pneumothorax
• D. Stroke with partial symptoms

Answer: (B)

A sudden, severe headache followed by fainting and signs of raised intracranial pressure points to an intracranial hemorrhage, most commonly a ruptured cerebral artery causing subarachnoid bleeding. The body’s response to rising pressure inside the skull can produce a slowed, irregular breathing pattern and a high blood pressure with a slowing heart rate (Cushing reflex). This combination is characteristic of a brain bleed rather than a heart attack or lung issue. A myocardial infarction would more often present with chest pain and different vital signs; a tension pneumothorax would show distinct chest findings and breathing problems; a stroke with partial symptoms might have focal deficits but not the dramatic thunderclap headache and the specific breathing and pulse pattern described. In this scenario, treat it as a potential intracranial hemorrhage: ensure airway and breathing, provide high-flow oxygen, monitor vitals, and prioritize rapid transport to a hospital with neurological imaging capabilities.