足不出户仍然可能中暑 警惕这些高温防暑误区|北条麻妃在线一区二区

  中央气象台7月16日18时继续发布高温橙色预警。其中,重庆西部和北部、四川盆地中南部、内蒙古西北部、新疆吐鲁番盆地等地的部分地区可达40℃以上。

  这么热的天,防晒帽子戴得越严实越好?待在室内就不会中暑?洗冷水澡降温快?一起来看看关于高温防暑的误区。 

  高温天气下,待在室内就不会中暑?

  “室内≠安全”,高温天气下,即使足不出户,仍然可能中暑。

  中国气象局公共气象服务中心首席专家 柳艳香:中暑是由于人体内的热量不能及时散发出去,造成的体内蓄热,所以如果室内温度高,湿度大又不通风,再如果不开空调或者电风扇的话,就给中暑提供了环境条件。而由于老年人体温调节机能相对比较弱,就更容易发生中暑。

  夏天洗冷水澡,更容易降温?

  中国气象局公共气象服务中心首席专家 柳艳香:其实夏天冲冷水澡确实能带来一时的凉爽,但它并不是最理想的降温方式。冷水洗澡,皮肤骤然被冷水刺激,皮肤血管会瞬间收缩,反而减少了散热,导致核心温度下降变慢。另外冲完冷水澡以后,皮肤血管重新扩张,大量血液涌向皮肤,可能会造成血压波动、头晕甚至晕厥。剧烈运动后的人群为了散热,毛孔是打开的,如果骤然被冷水刺激毛孔关闭,体内的热量更不容易散发出来,也更容易中暑。

  正确的做法应该是用温水冲凉,效果会更好。水温大约在32℃~35℃之间,比体温略低,这样既可以带走热量,又可以避免体表血管剧烈收缩,所以温水加蒸发才是真正降温。

  “全副武装”就不会中暑了?

  外面阳光灼热,出门前“全副武装”,用防晒衣、防晒帽子把自己遮得严严实实,是不是就不会中暑了?

  中国气象局公共气象服务中心首席专家 柳艳香:防晒帽的作用是防晒,而防暑是既要防晒还要透气。如果透气性能差,头部产生闷热的感觉,出汗受阻,反而增加了中暑的风险,所以要遮得住阳光,散得走热量,才能真正防暑。

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