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健康台首页  |  视频诊疗所 | 健康之路  | 中华医药  |  健康早班车  | 心理访谈 | 健康美食
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  俗话说:“春天孩儿面,一天变三变。”早春二月,气候多变,乍暖还寒,早晚温差大,对患有心血管病的中老年人来说,若稍有疏忽,极易发生心衰,危及健康和生命。据有关统计资料表明,我国成年人中的心衰患病率为1.5%,65岁以上老年人群中心衰患病率高达4%~6%。

  ●为何会发生心衰

为何会发生心衰

  人们把天气变化比喻成心肺功能的“晴雨表”,由于早春季节寒风料峭,时有寒潮过境,当机体受到气温、气流等气候条件变化剧烈的影响,在寒冷的刺激下,交感神经兴奋,人体内收缩血管的物质——儿茶酚胺水平升高,致使全身毛细血管收缩;肾上腺素分泌增多,促使心率加快,心输出量和外周阻力增加,肾脏水钠潴留,会引起血压升高,心脏负荷加重,心肌缺血、缺氧。加上空气干燥,水分消耗多,体内容易缺水而使血液变得黏稠,血流减慢,心血管病患者就容易发生心力衰竭。此外,患有感冒,肺部感染,过度疲劳,心情烦躁,睡眠不足,食欲不振等,都易诱发心衰。

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