Materials
throat
MINOR
The lidocaine spray (N-(2,6-xylenyl)-2-(diethylamino) acetamide) used in the intervention group was produced by Shanghai Xinyi Pharmaceutical Co., Ltd., a solution type, 8 g per bottle, containing 450 mg lidocaine, 4.5 mg lidocaine per spout, and 100 spouts per bottle. The spray had been approved by the China Food and Drug Administration for local anesthesia for minor operations in the mouth, nose, and throat, with a bottle of lidocaine spray costing 66 yuan RMB.The spray used in the control group was mineral water spray, which was installed in a hand-held pressurized spray tank similar in size to lidocaine spray. The mist provided a cool and comfortable feeling to the patients.