Difference Between Systolic and Diastolic Blood Pressure

Blood Pressure

Blood pressure is a serious health problem which affects nearly 40 to 50 per cent of the total population.

Blood is a fluid connective tissue which is carried to all parts of our body with the help of arteries. It plays a key factor in providing blood (thus oxygen and energy) to organs.

Blood pressure is the force of blood against the arteries. An individual should maintain a normal blood pressure from 90 – 120 / 60 – 80 mm Hg. Blood pressure is given by two numbers, with one above or before the other – 120/80.120 – This is called systolic pressure and 80 – This is called diastolic pressure.

Also Read: Blood pressure symptoms

Types of Blood Pressure

  • Systolic Blood Pressure.

The normal range of systolic blood pressure should be 90 – 120 mm Hg.

  • Diastolic Blood Pressure.

The normal range of diastolic blood pressure should be 60 – 80 mm Hg.

Both Diastolic and Systolic are derived from the Greek word. Diastolic meaning drawing apart and Systolic meaning a drawing together.

Also Read: Blood Pressure Test

Differences Between Systolic and Diastolic Blood Pressure

Here is the differenced between systolic and diastolic blood pressure.


Types Systolic blood pressure Diastolic blood pressure
Definition The pressure exerted when the heartbeats The pressure exerted on the walls of the arteries when the heart muscles relax in between two beats
Normal Range In infants –95mmHg. In adults– 90-120 mmHg. Age 6 to 9 –100 mmHg. In infants–65 mm Hg. In adults– 60-80 mmHg. Age 6 – 9 — 65 mmHg.
Ventricles of the Heart Ventricles contract Ventricles are relaxed
Reading of Blood Pressure The systolic pressure is high The diastolic pressure is low
Blood pressure inside the arteries Maximum Minimum.
Blood vessels Contracts Relaxed

Also Read: Hypertension 

For more detail information regarding the blood pressure, its types and hypertension, visit BYJU’S.

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