新治疗失眠药物在老年人中的应用(2)
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老年人体液减少,脂肪增多,蛋白减少,此外老年人肝肾功能随年龄的增加而减退,这些因素使脂溶性且蛋白结合率高的失眠治疗药物在老年人体内代谢减慢,体内游离药物浓度高。失眠治疗药常常有时间滞后的抑制作用,会导致白天嗜睡、乏力、精神萎靡,老年人服用要防止发生意外跌倒等不良后果;甚至有的老人发生进食、饮水时的呛咳和窒息。因此 ,老年人使用药物治疗失眠症要十分慎重。上述新的失眠药物,安全性有了明显提高,为老年失眠患者的药物治疗提供了新的选择,但使用时仍应慎重。
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(收稿日期:2007-04-22)
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