老年人尤其是老年心血管病人,心血管的调节和顺应性较差,在卧床稍久或蹲厕起来后,因血压调节“不到位”,容易引起体位性低血压,进而诱发脑缺血,发生晕厥。为防意外,在起床或蹲厕起身时,先吸足了气,再用力咳几声,就能防止发生晕厥。这是因为在咳嗽时,能挤压肺循环,使血液流入心 The elderly, especially elderly cardiovascular patients, poor cardiovascular regulation and compliance, slightly longer in the bed or squat toilet up, due to blood pressure regulation “is not in place,” easily lead to orthostatic hypotension, and then induce cerebral ischemia, Syncope occurred. To prevent accidents, get up or squat toilet up, the first full gas, and then cough several times, we can prevent the occurrence of syncope. This is because when coughing, can squeeze the pulmonary circulation, the blood flow to the heart