Hypertension:Also known as high blood pressure is, by definition, a repeatedly elevatedblood pressureexceeding 140 over 90 mmHg -- asystolicpressure above 140 or adiastolicpressure above 90.Chronichypertension是一个“沉默”conditionthat does not have symptoms. It can causebloodvesselchangesinthe back of theeye(retina),abnormalthickening of the heartmuscle, kidney failure, and brain damage.
