【多选题】【消耗次数：1】
发生事故遇有创伤性出血的伤员，应迅速包扎止血，正确的止血方法有（ ）。
①
一般伤口先用生理盐水冲洗伤口，涂上红药水，然后盖上消毒纱布，用绷带较紧地包扎。
②
一般伤口先用生理盐水冲洗伤口，涂上紫药水，然后盖上消毒纱布，用绷带较紧地包扎。
③
一般伤口也可用纱布、棉花等作软垫，放在伤口上再包扎，来增加压力而达到止血。
④
四肢受伤大出血，采用止血带止血法时，上肢出血结扎在上臂1/2处（靠近心脏位置），下肢出血者扎在大腿上1/3处。
⑤
四肢受伤大出血，采用止血带止血法时，上肢出血结扎在上臂1/3处（靠近心脏位置），下肢出血者扎在大腿上1/4处。
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