6名无症状的高血压患者(年龄64～84岁,平均72岁),治疗前收缩压160～220毫米汞柱,舒张压80～120。心电图和胸部X线检查均正常,无心律失常的症状。用降压药后不到7天,均发生知觉丧失。入院时,收缩压80～150,舒张压50～90。全部患者入院前均有直立性低血压的症状——头晕、晕厥、视力模糊、步履无力等。停用降压药后,除1例留有左侧偏盲外,余均完全恢复。作者认为:老年人收缩压和舒张压升高是常见的。虽然当平均动脉压降低30％时,脑血管疾病的患 Six asymptomatic hypertensive patients (aged 64-84 years, average 72 years) had systolic blood pressure of 160-220 mm Hg before treatment, and diastolic blood pressure of 80-120. ECG and chest X-ray examination were normal, no arrhythmia symptoms. Less than 7 days after taking antihypertensive drugs, loss of consciousness occurred. Admission, systolic blood pressure 80 ~ 150, diastolic blood pressure 50 ~ 90. All patients had orthostatic hypotension before admission symptoms - dizziness, fainting, blurred vision, weakness and other walking. Disable antihypertensive drugs, in addition to leaving a left hemianopia, I have fully recovered. The authors believe that: elderly systolic and diastolic blood pressure is common. Although cerebrovascular disease suffers when mean arterial pressure drops by 30%