Pulse pressure is simply the difference between systolic and diastolic pressure (for example, 120/80 → 40).
Despite its simplicity, it is a valuable measure of the stiffness of the large arteries. A wide pulse pressure is a sign that the vessels have lost elasticity, and it is considered a marker of vascular aging and cardiovascular risk.
Reference ranges
Pulse pressure = upper − lower (mmHg):
| Normal | ≈ 40 (30 – 50) |
| Wide | > 60 — aortic stiffness, risk |
| Narrow | < 30 — low cardiac output |
| Rises with age | due to a rise in systolic |
What an elevated level means
A wide pulse pressure (> 60) most often means stiffness of the aorta and large arteries — a typical sign of vascular aging and atherosclerosis. It is associated with an increased risk of heart attack, stroke and heart failure.
More rarely a wide pulse pressure occurs with aortic valve insufficiency, severe anemia or hyperthyroidism.
What a low level means
A narrow pulse pressure (< 30) means the heart ejects little blood per beat.
Causes: heart failure, severe blood loss or dehydration, narrowing of the aortic valve (aortic stenosis). A sharply narrow pulse pressure against low BP is an alarming sign that needs urgent assessment.
How the test is done
Pulse pressure is not measured separately — it is calculated as the difference between the upper and lower numbers from an ordinary monitor reading. So the correctness of the BP measurement itself matters.
It is interpreted in context: a wide pulse pressure in an older person is an expected sign of vascular stiffness, while a suddenly narrow one with low pressure is a reason to look for an acute cause.
What affects the value
- Age and aortic stiffness — widen pulse pressure.
- Atherosclerosis and hypertension — widen it.
- Hyperthyroidism, severe anemia — widen it.
- Heart failure — narrows it.
- Blood loss and dehydration — narrow it.
- Aortic stenosis — narrows it.
Assess your vascular age
A wide pulse pressure is a marker of vascular stiffness; assess your vascular age:
Frequently asked questions
What does a wide pulse pressure mean?
A large difference between the upper and lower pressure (> 60) most often indicates stiffness of the large arteries — a sign of vascular aging. It is an independent cardiovascular risk factor, especially significant in older adults.
How do you calculate pulse pressure?
Simply subtract the lower from the upper: at 130/80 the pulse pressure is 50. No separate measurement is needed — it is only important to measure the blood pressure itself correctly.
Is a narrow pulse pressure bad?
A narrow pulse pressure (< 30) means a small ejection of blood per beat and occurs with heart failure, blood loss or aortic stenosis. A sharp narrowing against low pressure is especially concerning — a reason for urgent assessment.
Related terms
Sources
- Pulse Pressure — StatPearls (NCBI)
- American Heart Association — Understanding Blood Pressure Readings
- MedlinePlus (NIH) — Vascular Stiffness / Arteriosclerosis