Which condition involves brain compression from increased intracranial pressure and is associated with the Cushing's reflex?

• A. Herniation syndrome
• B. Subarachnoid hemorrhage
• C. Epidural hematoma
• D. Cerebral contusion

Answer: (A)

When intracranial pressure climbs high enough to push brain tissue across structures, you get brain herniation. If this herniation compresses the brainstem, the body responds with the Cushing reflex to maintain cerebral perfusion: rising systolic blood pressure, slowed heart rate, and irregular breathing. This pattern is classically tied to herniation syndrome, making it the best fit for the scenario. Other conditions like subarachnoid hemorrhage, epidural hematoma, or cerebral contusion can raise pressure, but they aren’t defined by the brainstem compression and Cushing triad that occur with herniation.