Which statement among the following best describes Cushings triad?

• A. Hypertension, tachycardia, and wide pulse pressure
• B. Hypotension, bradycardia, and irregular respirations
• C. Hypertension, bradycardia, and irregular respirations
• D. Hypertension, tachycardia, and rapid respirations

Answer: (C)

Cushings triad signals rising intracranial pressure with brainstem involvement. It is defined by high blood pressure, slow heart rate, and irregular, often ineffective breathing. The elevated blood pressure is the body’s attempt to maintain cerebral perfusion as ICP increases; bradycardia arises from the Cushing reflex in response to this pressure rise and brainstem irritation; and the irregular respirations reflect disruption of brainstem respiratory centers. Among the statements, the one describing hypertension, bradycardia, and irregular respirations best fits this pattern. Tachycardia or rapid respirations would not match the classic triad, and hypotension would contradict the hallmark high blood pressure component.