1.手术台上捆扎的误区
1. misunderstanding on the operation table
肱骨及股骨中下段手术中，为减少出血，往往需要无菌止血带，由主刀医生在手术台上捆扎，因而致使止血带的松紧度没有保证，充气量也无法确定，造成出血，甚至出现皮肤坏死及神经麻痹等并发症;
In humerus and femur operation, aseptic tourniquet is often needed to reduce bleeding. The tourniquet is tied on the operating table by the surgeon. As a result, the tightness of the tourniquet is not guaranteed and the inflatability is uncertain, resulting in bleeding, even skin necrosis and nerve paralysis.
驱赶血液时，驱血带每周圈间都留有大小不等的距离，形成间断驱血，效果极差;
When expelling blood, there are different distances between the circles every week, forming intermittent expelling blood, the effect is very poor.
驱血时用力不匀，一绕一缓，不能持续用力，止血效果差;
When the blood is disused, the force is not uniform. If the wound is slow, the force can not be sustained and the hemostatic effect is poor.
肱骨中段手术中，为减少出血，使用小儿无菌止血带止血，因气囊短而窄，达不到压迫止血的目的，反而出血更多。
In the middle humerus surgery, in order to reduce bleeding, the use of sterile tourniquet in children hemostasis, because the balloon is short and narrow, can not achieve the purpose of compression hemostasis, but bleeding more.
2.手术前台下捆扎的误区
2. misunderstanding of the operation at the front desk.
捆扎过松或压力不足，出血多;
Loose or insufficient pressure and bleeding.
捆扎过紧或压力过大，易产生并发症;
Too tight or too much pressure is easy to cause complications.
捆扎前缠绕保护肢体的无菌巾未铺平，使其受力不均匀，易产生水泡;
The sterile napkins wrapped around the protective limbs before paving are not paved, resulting in uneven force and easy to generate blisters.
止血带使用超过时限，病人疼痛难忍;
The use of tourniquet exceeds the time limit and the patient suffers from pain.
捆扎位置不当，压迫神经，造成麻痹;
Improper position, compression of nerves, paralysis.
充气过后止血带涨开或脱滑，延误时间;
After the inflation, the tourniquet rises or goes off and delays.
通气管与止血仪衔接不紧或中途脱落;
The connection between the ventilator and the hemostat is not tight or it will fall off halfway.
多个肢体同时放松止血带，造成血压急剧下降，甚至休克
Multiple limbs relax the tourniquet at the same time, resulting in a sharp drop in blood pressure or even shock.