胃镜检查是最常用的消化道检查方法之一,临床普遍使用的咽喉部表面麻醉并不能完全消除咽喉部强烈刺激引起的咽喉部不适。病人呛咳、恶心、呕吐、躁动。部分患者常因此而拒绝必要的检查和复查,部分患者在检查过程中配合不当或自行拔管导致检查失败。近年来采用无痛胃镜技术,消除了受检者的痛苦感受,受到了广泛欢迎。但是术前禁食及麻醉药及镇痛药的使用势必会引起循环抑制,血 Gastroscopy is one of the most commonly used methods of digestive tract examination. The commonly used clinical throat surface anesthesia does not completely eliminate the throat discomfort caused by strong stimulation of the throat. Patients cough, nausea, vomiting, restlessness. Some patients often refuse the necessary examination and review, some patients in the inspection process with improper or extubation lead to failure. In recent years, the use of painless gastroscopy, eliminating the pain of the subjects feel, has been widely welcomed. However, preoperative fasting and the use of narcotic drugs and analgesics is bound to cause circulatory depression, blood