Hypertension :
Hypertension is a clinical condition characterized by persistence
rise of blood pressure above the normal range in respect of age and sex.
Hypertension occurs when diastolic pressure is greater than 90 mm of Hg and
systolic pressure is above 140 mm of Hg.
- Primary or essential hypertension
- Secondary hypertension
Primary / Essential Hypertension :
When arterial
blood pressure persistently exceeds 150/90 or 160/100 mm of Hg. Its cause is
unknown.
Secondary Hypertension:
It is due to other disease, as renal
diseases, phaeochromocytoma by excess secration of glucocorticoids by coarctation
of aorta.
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