可能是是大脑一时性缺血、缺氧引起的短暂的意识丧失晕厥与昏迷不同,昏迷的意识丧失时间较长恢复较难。晕厥与休克的区别在于休克早期无意识障碍周围循环衰竭征象较明显而持久。对晕厥病人不可忽视应及时救治。晕厥是临床常见的综合征具有致残甚至致死的危险,表现为突然发生的肌禸无力姿势性肌张力丧失,不能直立及意识丧失晕厥有一定的发病率,甚至在正常人也可能出现
????‰???‰?????‰è???§???…??????
????‰???‰è??
????‰???????????°±?????????????‰?????‰?é?‘
????‰???¤???é???????¨?????‰????—?é???????…??????
???è???? ????????????è????–???è?????
????¤??????¨???é???‰?
è??è?‘?? è??????????–è?…è????–??????è?????
????????????
????—???????????¤?
é???????????é??????¤§
?????????????????°???è?’???????—?????–??????–?°???–è?…?????—??–
????¤????????????????è????–???è?????
???????????????è°?è°?
??‰?—????é????????è?????????—???¨???è…??°±??????
è???????‘???????‰?????…???¨?????‰?????????è?’??????é??è???’¨è?????é???—?é????°????’¨è?????
???è§??????‰é—?é??é???—????è???’¨è??