睡前。不少老年人不习惯睡前饮水,怕夜间起床排尿。其实老年人膀胱萎缩,容量减少,不饮水照样要起床排尿。专家指出,老年人晚间睡前不饮水,可导致血浆浓缩、血液黏稠度升高和血小板凝聚能力亢进,从而可诱使体内血栓形成。对于老年人或患心脑血管缺血性疾病的人,晚间睡前 Before going to bed. Many elderly people are not used to drinking water before going to bed at night, urinating. In fact, the elderly bladder atrophy, reduced capacity, do not drink water to get up urination. Experts point out that the elderly do not drink water before going to bed at night, can lead to plasma concentration, blood viscosity and platelet aggregation increased hyperthyroidism, which can induce thrombosis in vivo. For the elderly or people suffering from cardiovascular and cerebrovascular ischemic disease, bedtime before going to bed