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Prevention
Correct techniche,careful and repeated aspiration and the use of a test dose are important,but the main safety measure is slow injection of the local anaesthetic.This prevents rapid production of very high plasma concentrations even if the injection is intravascular.By this means,toxicity may be diagnosed early,the injection discontinued and a major reaction avoided.Fast injection of local anaesthetic is not necessary for the performance of any block.
_____Textbook of Anaesthesia Chapter 25
预防措施
(就局麻药毒性反应的预防措施而言,)正确的操作技术、小心而多次的回抽以及使用试验剂量十分重要,但主要的预防措施是局麻药的慢注射。即使发生血管内注药,该方法也能防范血浆内局麻药物浓度的快速升高。据此可以早期判断局麻药的毒性反应,从而停止注药避免严重毒性反应。在任何局部神经阻滞中均需避免局麻药的快速注射。
————麻醉学 第25章 |
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