例1.男性,37岁。因右恻腹股沟斜疝行疝修补术。术前采用0.5%普鲁卡因溶液(滴眼)做局麻药的过敏试验,15分钟后追问患者,眼部无不适感,观察眼结膜无充血及水肿,其结果为阴性。但病人在入手术室采用0.5%普鲁卡因溶液做局部浸润麻醉时,在注药局部开始出现荨麻疹。经静脉推注地塞米松5mg后无好转,而后出现皮下水肿,逐渐加重。 Example 1. Male, 37 years old. Due to right 恻 inguinal hernia hernia repair. Preoperative 0.5% procaine solution (eye drops) to do local anesthetic allergy test, 15 minutes after the patient asked, no discomfort in the eyes, the observation of conjunctival congestion and edema, the result was negative. However, the patient entered the operating room with 0.5% procaine solution for local infiltration anesthesia, began to appear in the injection of urticaria. After intravenous dexamethasone 5mg no improvement, then subcutaneous edema, gradually increased.