有些献血者在献血中或献血后1—2 s内会突感头晕、头昏,继而暂时意识丧失数秒至数分钟,这种献血反应系由一时性大脑广泛供血不足所致的一组暂短性临床综合征,在平卧数秒至数分钟症状可自行缓解,预后良好。献血反应在献血屋或流动采血车上均有发生。为杜绝此种情况发生,我们在流 Some blood donors may suddenly feel dizzy within 1-2 seconds of blood donation or blood donation, and then temporarily lose their consciousness for a few seconds to several minutes. Such blood donation reaction is caused by a group of short-term shortages caused by extensive brain transient blood supply Sexual clinical syndrome, symptoms can be relieved in the supine seconds to minutes, the prognosis is good. Blood donation reaction in blood donation room or mobile blood collection car have occurred. To prevent this from happening, we are in the stream