我们在普鲁卡因中加入苯肾上腺素用于口腔手术已有十余年的历史,一直没有发现异常反应。但在近半年来,有3例以剧烈头痛为主要症状的过敏反应,现举1例如下: 患者女,42岁。因龋齿并慢性根周膜炎行龋齿拔除术。用2%普鲁卡因4毫升加入苯肾上腺素2滴(约250微克),行右侧下齿 We have been in the procaine phenylephrine for oral surgery has more than ten years of history, has not found any abnormal reaction. However, in the past six months, there are 3 cases of severe headache as the main symptom of allergic reactions, cite one case as follows: The patient female, 42 years old. Caries due to dental caries and chronic root dermabrasion dental caries removal. Add 2 drops of phenylephrine (about 250 micrograms) with 4 mL of 2% procaine,