为什么嘴唇会变成紫色?

2025-03-24 17:24:50
推荐回答(1个)
回答1:

 在人体的身体中流动看两种血液,一种叫动脉血,一种叫静脉血。动脉血由于含氧量高,所以是鲜红的;静静脉血中含氧量低颜色较暗。
  在正常情况下,如果心脏出现了缺损,本来应该在右心房和右心室的静脉血就混到动脉血中去了,这样,血液中的氧气含量相对要少一些,它们随着动脉血运送到全身,于是位于身体浅表处的嘴蜃,就比正常人颜色要暗一些,甚至发紫。
  嘴蜃发紫不仅仅在心脏病人中出现,如果肺的通气不良,气体不能很好地交换,或者在机体严重受寒,血液供应不良时也会出现嘴蜃发紫。
可能是因为缺氧
你的胃有问题
查查血小板

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