Introduction - What is Hypertension?

Hypertension: Can be defined has having High blood pressure, the ranges below show ranges of blood pressure which fall into either normal presures or hypertention pressures.

Diastolic - The blood pressure during relaxation and dilatation of the ventricles of the heart, the time when the ventricles are filling with blood.

<85 Normal

>90 Hypertension


Systolic - The blood pressure when the vemntricles of the heart is contracting. It is the maximum arterial pressure during contraction of the left ventricle of the heart.

<140 Normal

>159 Hypertension



There are two Hypertension types:

Essential hypertension (EH) - Known risk factors but no clear cause

Secondary hypertension (SH) - Occurs consequent to a clinical condition




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Heart during ventricular Diastole



Heart during ventricular systole

Find out more about Systolic and Diastolic pressures