Myers M G, Kearns P M, Kennedy D S, Fisher R H
Can Med Assoc J. 1978 Sep 23;119(6):581-5.
Blood pressures were recorded in 319 ambulatory subjects, largely men, age 50 to 99 years. The mean systolic pressures were maximal in the seventh and eighth decades (136.0 and 132.1 mm Hg with the subjects supine and erect, respectively), whereas the mean diastolic pressures fell progressively after age 69. The distribution of postural changes in mean blood pressure was similar in each decade; a decrease of 20 mm Hg on more was noted in 3.4% of the subjects aged 80 to 99 years and in 4.1% of those aged 50 to 79 years. The frequency of postural hypotension was 4.6% in subjects treated with diuretics and 3.4% in those not so treated. Blood pressures and the frequency of postural hypotension did not progressively increase in age in this elderly population.
对319名动态监测对象进行了血压记录，这些对象主要为年龄在50至99岁的男性。收缩压均值在70至80岁时最高（受试者仰卧和直立时分别为136.0和132.1毫米汞柱），而舒张压均值在69岁以后逐渐下降。每个十年中平均血压的体位变化分布相似；在80至99岁的受试者中，3.4%的人血压下降超过20毫米汞柱，在50至79岁的受试者中，这一比例为4.1%。使用利尿剂治疗的受试者体位性低血压发生率为4.6%，未使用利尿剂治疗的受试者为3.4%。在这一老年人群中，血压和体位性低血压的发生率并未随年龄增长而逐渐增加。
