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行扁桃体剥离术时,一般习惯于普鲁卡因液中加入几滴1‰肾上腺素,目的是减少术中出血,延长麻醉时间,减少麻醉剂毒性反应。笔者认为术中出血主要取决干组织的损伤程度,加用肾上腺素偶可遇术后续发性大出血。普鲁卡因的有效麻醉时间供一侧剥离操作是足够的,无需依靠肾上腺素的延长来完成手术。普鲁卡因的用量仅是其最大1次用量的1/5～3/10。
Tonsillectomy, the general habit of procaine solution by adding a few drops of 1 ‰ epinephrine, the purpose is to reduce intraoperative bleeding, prolong the anesthesia time and reduce the anesthetic toxicity. The author believes that intraoperative bleeding depends mainly on the extent of the damage of dry tissue, plus occasional epinephrine can be encountered after the episode of major bleeding. Effective procaine anesthesia for side stripping operation is sufficient, without having to rely on the extension of epinephrine to complete the operation. The amount of procaine is only 1/5 ~ 3/10 of its maximum 1 dose.