Cushings Triad includes which combination?

Cushings Triad includes which combination?

• A. Hypertension, Bradycardia, Widening pulse pressure
• B. Hypotension, Tachycardia, Narrow pulse pressure
• C. Hypertension, Tachycardia, Narrow pulse pressure
• D. Hypotension, Bradycardia, Widening pulse pressure

Answer: (A)

Elevated intracranial pressure triggers a compensatory response that raises systemic blood pressure to maintain brain perfusion, while the heart rate slows due to a reflex vagal response, and the breathing pattern becomes irregular. This combination—high blood pressure with a widened pulse pressure, bradycardia, and irregular respirations—is the hallmark of the Cushing reflex. The widening pulse pressure occurs because systolic pressure rises more than diastolic pressure during this response, creating a larger gap between the two numbers. The other patterns, such as low blood pressure with fast heart rate or a narrow pulse pressure, do not reflect this ICP-driven reflex. So the best match is hypertension with bradycardia and a widened pulse pressure.

Elevated intracranial pressure triggers a compensatory response that raises systemic blood pressure to maintain brain perfusion, while the heart rate slows due to a reflex vagal response, and the breathing pattern becomes irregular. This combination—high blood pressure with a widened pulse pressure, bradycardia, and irregular respirations—is the hallmark of the Cushing reflex. The widening pulse pressure occurs because systolic pressure rises more than diastolic pressure during this response, creating a larger gap between the two numbers. The other patterns, such as low blood pressure with fast heart rate or a narrow pulse pressure, do not reflect this ICP-driven reflex. So the best match is hypertension with bradycardia and a widened pulse pressure.