What Does Diastolic Mean?


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Aun Jafery Profile
Aun Jafery answered
Diastolic refers to the relaxation of the heart within the cardiac cycle between muscle contractions. It is an adjective and is derived from the noun diastole. It is one of the components recorded when a persons blood pressure is recorded. In blood pressure readings the second number recorded is termed the diastolic pressure. In a reading of 120/80 which is correctly put as "120 over 80", the lower end or 80 is the diastolic pressure. By "80" it actually means 80 millimetres of mercury or 80 mm Hg.

The word diastole is taken from the Greek word "diastole" meaning separation. The original word was "diastellien" from "dia" meaning "apart" and "stellein" meaning "to place".
Diastolic pressure which refers to the lowest pressure is the opposite of systolic pressure which is the highest arterial pressure seen during every heart beat.

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