术前要对止血带进行仔细检查，如气囊是否漏气，打气筒是否好用，气压表是否准确。 Before operation, the tourniquet should be carefully checked, such as whether the air bag is leaking, whether the air cylinder is good, and the air pressure gauge is accurate. 　　根据患者年龄、肢体周径、病人体质等因素选用合适的气压止血带。 The appropriate pressure tourniquet was selected according to the patient's age, the size of the limb and the patient's physique. 　　放置止血带的部位应正确，止血带要绑于肢体肌肉较丰富部位，以防损伤神经。上肢者放在上臂中上1/3处，下肢者应放在大腿根近腹股沟部。 Place the part of the tourniquet should be correct, the tourniquet should be bound to the body muscle to be richer part, in case of injury nerve. The upper extremity is located in 1/3 of upper arm, the lower extremity should be placed in the thigh root near groin. 　　绑止血带时，止血带下要垫一个小单（布），并使接触皮肤面保持平整。止血带要绑的松紧适宜，通气管要放在肢体近端，即可防止污染手术野，又便于打气。气压止血带外最好再缠固定带或绷带加压固定，防止充气后滚动。 To tie the tourniquet, a small sheet (cloth) will be placed under the tourniquet and keep the skin surface smooth. It is suitable for the tourniquet to be fastened. The ventilator should be placed close to the extremities, so as to prevent the pollution operation field and facilitate the pump. The pressure tourniquet outside is best to be bound or bandage pressure fixed, prevent inflation to roll. 　　止血带充气前应先抬高肢体，驱血带驱血彻底后，再将止血带的通气管接于压气表上，缓慢将气打入止血带内。上肢压力成人不超过40.0kPa（300mmHg），小儿不超过26.7kPa（200mmHg），下肢压力成人不超过80kPa（600mmHg），小儿不超过33.3kPa（250mmHg）。 Before the tourniquet is inflated, the body should be raised, the blood drive should be flushed and the blood pressure can be put on the gas meter, and the air can be put into the tourniquet slowly. No more than 40.0 kPa (300mmHg), no more than 26.7 kPa (200mmHg), and no more than 80kPa (600mmHg) of lower limb stress, no more than 33.3 kPa (250mmHg) in children. 　　准确记录气压止血带充气时间，上肢以1h，下肢以1.5h为限，时间到时，需提前通知手术医生做好放气准备，如需继续使用，应先放气5～10min后再充气并重新记录时间。 Accurate records pneumatic tourniquet aeration time, upper limbs to 1 h, lower limb is limited to 1.5 h, time, then need to inform the surgeon prepared to deflate, if you want to continue to use, should be deflated inflatable again after 5 ~ 10 min and recording time again. 　　松止血带时，放气要缓慢，以免血压急剧下降引起休克。手术完毕去除止血带后，检查病人皮肤有无损伤，必要时局部按摩数分钟。 Release the tourniquet slowly, so that the blood pressure drops sharply and causes shock. After operation, remove the tourniquet, check the patient's skin for any damage, and massage for several minutes if necessary.