Everyone knows to watch their blood pressure numbers. Fewer people know about the number hiding between them: pulse pressure, the gap between systolic and diastolic readings.
What Pulse Pressure Actually Measures
Take your systolic reading (the top number) and subtract your diastolic reading (the bottom number). If your blood pressure is 120/80, your pulse pressure is 40. This gap reflects how much your artery pressure swings with each heartbeat, tied closely to how flexible or stiff your arteries are.
Why a Wide Gap Can Matter
As arteries stiffen, which happens naturally with age and can be accelerated by conditions like high blood pressure or atherosclerosis, they lose some of their ability to absorb the pressure surge with each heartbeat. This tends to widen pulse pressure over time. Research has associated persistently wide pulse pressure, generally above 60, with increased cardiovascular risk in some populations, particularly older adults, a pattern discussed by the American Heart Association.
Can Pulse Pressure Be Too Narrow?
Yes, though it is less commonly discussed. A narrow pulse pressure, under roughly 25-40, can sometimes indicate the heart is not pumping with as much force as expected, and in a hospital setting can be a signal doctors watch for in certain conditions. In everyday healthy adults, a narrow reading can also simply reflect strong cardiovascular fitness, context matters.
What To Do With This Number
- Track it over time rather than reacting to one reading
- Take readings while seated and relaxed, ideally at a similar time of day
- Bring a pattern of consistently wide or narrow readings to your doctor rather than diagnosing yourself
The Bottom Line
Pulse pressure will not replace a conversation with your doctor, but it is a simple, free number that adds useful context to the blood pressure readings you are probably already tracking.
This article is for general informational purposes and is not a substitute for advice from a qualified healthcare provider.
Frequently Asked Questions
What is considered a normal pulse pressure?
Roughly 40 mmHg is typical at rest for many healthy adults, though this varies by individual and tends to widen somewhat with age.
Can stress affect my pulse pressure reading?
Yes, stress, caffeine, and recent activity can all temporarily raise blood pressure and shift the gap between systolic and diastolic readings.
Should I track pulse pressure alongside regular blood pressure?
It can add useful context, especially over time, but regular blood pressure monitoring itself remains the primary number to track with your doctor.
Check your own pulse pressure
See the gap between your systolic and diastolic readings.