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根据临床观察,高血压患者大多数在早上起床后1～3个小时,是血压最高峰;午后3～4点钟开始下降;晚上6～7点钟又回升;入睡1～2个小时后,不仅心跳、呼吸趋于缓慢,血压也会降至最低点。 由于药物作用,通常在服药后1～2个小时达到最高峰,所以睡前服用降血压药,药物发挥作用的时候正好是血压最低的时候,血压下降若幅度过大,则容易发生意外。 血压太低,夜间起床,会出现“起立性低血压”而跌倒或昏倒。此外,血压太低,血流也会缓慢,易使血液凝结,发生血管栓塞,并发中风(缺血性)或心肌梗塞。
According to clinical observation, the majority of patients with hypertension in the morning after getting up 1 to 3 hours, is the peak blood pressure; 3 to 4 o’clock in the afternoon began to decline; evening 6 to 7 o’clock and rose; sleep 1 to 2 hours later, Not only the heartbeat, breathing tends to be slow, blood pressure will be reduced to the lowest point. As the drug effect, usually 1 to 2 hours after taking the peak, so taking antihypertensive drugs before going to bed, when the drugs play a role is the lowest blood pressure, if the drop in blood pressure is too large, then prone to accidents. Blood pressure is too low, get up at night, there will be “standing hypotension” and fall or collapsed. In addition, the blood pressure is too low, blood flow will be slow, easy to make blood coagulation, vascular embolism, complicated by stroke (ischemic) or myocardial infarction.