عدد الرسائل : 3396 العمر : 51 تاريخ التسجيل : 07/10/2008
موضوع: Hypertension Video Lecture الخميس 21 نوفمبر 2013, 4:03 pm
Hypertension (HTN), also called arterial hypertension, is a chronic disease in which the blood pressure in the arteries is elevated above normal value. This requires the heart to work harder than normal to circulate blood through the blood vessels. Blood pressure is summarised by two measurements, systolic and diastolic blood pressure, which depend on whether the heart muscle is contracting (systole) or relaxed between beats (diastole) and equate to a maximum and minimum pressure, respectively The video
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