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51问答网 > 输液时(打吊针,打点滴)为什么药水滴完后不拔针就会回血?

输液时(打吊针,打点滴)为什么药水滴完后不拔针就会回血?

2025-03-14 22:57:06

推荐回答（3个）

回答1：

人是有血压的,有药水时,因药水从高处滴下的水压>人的血压故药水流到血管去,当药水打完时水压<血压故血要流向针管.打完后如没有护士,你可以将控制滴快慢那开关关掉,这时就不会回血.

回答2：

因为血管里有压力啊~！

回答3：

血压大就倒流咯```

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