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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.

Differences Between Systolic and Diastolic Blood Pressure

Here is the differenced between systolic and diastolic blood pressure.




TypesSystolic blood pressureDiastolic blood pressure
DefinitionThe pressure exerted when the heartbeatsThe pressure exerted on the walls of the arteries when the heart muscles relax in between two beats
Normal RangeIn 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 HeartVentricles contractVentricles are relaxed
Reading of Blood PressureThe systolic pressure is highThe diastolic pressure is low
Blood pressure inside the arteriesMaximumMinimum.
Blood vesselsContractsRelaxed

Also Read: Hypertension 

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