心跳骤停是手术麻醉过程中最严重的突发紧急情况。颌面外科行上颌骨 Lefort I 型截骨时可刺激或牵拉上颌神经引发“三叉神经－心脏反射”，其可表现为心律失常、异位起搏、房室传导阻滞、心动过缓、晕厥、呕吐，严重时可致心跳骤停。现报道1例正颌手术中上颌骨 Lefort I 型截骨致心跳骤停的发生及处理经过。%Cardiac arrest is the most serious emergency during operation and anesthesia.In maxillofacial surgery,Lefort I osteotomy of the maxilla may stimulate or retract maxillary nerve and trigger “trigeminal-cardiac reflex”,which manifests as arrhythmia,atrioventricular block,bradycardia,apsychia,vomit and cardiac arrest.A case of cardiac arrest during Lefort I osteotomy of the maxilla is reported in this pa-per.
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