Unverified50% confidenceDecision RuleTime unknown
口咽通气管(OPA)尺寸测量法:从门齿到下颌角的距离对应型号,成人常用80-100mm(Guedel 3-4号),选错型号过长会推挤会厌加重梗阻,过短则无法越过舌根
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