Pulse pressure is defined as the difference between

Pulse pressure is defined as the difference between

• A. Systolic minus diastolic pressure
• B. Diastolic minus systolic pressure
• C. Pulse rate difference
• D. Mean arterial pressure minus diastolic pressure

Answer: (A)

Pulse pressure is the pressure swing in the arteries with each heartbeat, calculated as the difference between the systolic pressure (the peak during heart contraction) and the diastolic pressure (the trough during relaxation). For example, a reading of 120/80 mmHg gives a pulse pressure of 40 mmHg. This value reflects the pulsatile component of blood pressure and is influenced by stroke volume and arterial elasticity. The other ideas don’t fit because diastolic minus systolic would produce a negative value and isn’t a meaningful measure of pressure change. Pulse rate difference isn’t about pressure at all. Mean arterial pressure minus diastolic pressure doesn’t equal pulse pressure; MAP is roughly diastolic pressure plus one-third of the pulse pressure, so the result isn’t the pulse pressure.

Pulse pressure is the pressure swing in the arteries with each heartbeat, calculated as the difference between the systolic pressure (the peak during heart contraction) and the diastolic pressure (the trough during relaxation). For example, a reading of 120/80 mmHg gives a pulse pressure of 40 mmHg. This value reflects the pulsatile component of blood pressure and is influenced by stroke volume and arterial elasticity.

The other ideas don’t fit because diastolic minus systolic would produce a negative value and isn’t a meaningful measure of pressure change. Pulse rate difference isn’t about pressure at all. Mean arterial pressure minus diastolic pressure doesn’t equal pulse pressure; MAP is roughly diastolic pressure plus one-third of the pulse pressure, so the result isn’t the pulse pressure.