Southwick F S, Dalglish P H
JAMA. 1980 Mar 28;243(12):1250-3.
Asystole can be the presenting ECG finding of accidental hypothermia when the core temperature is less than 28 degrees C. Even two hours of persistent asystole does not represent irreversible cardiac compromise. With cardiopulmonary support and active rewarming, resuscitation and survival without serious sequelae can be achieved. Case reports and electrophysiology studies suggest that asystole is a primary manifestation of hypothermia potentiated by carbon dioxide retention. However, ventricular fibrillation in this setting is probably a secondary complication of resuscitation efforts, being precipitated by hypocapnic alkalosis, physical manipulation of the heart, and rewarming.
当核心体温低于28摄氏度时，心搏停止可能是意外低温的心电图表现。即使持续心搏停止两小时也不代表心脏出现不可逆的损害。通过心肺支持和积极复温，可以实现复苏并存活且无严重后遗症。病例报告和电生理研究表明，心搏停止是二氧化碳潴留加重低温的主要表现。然而，在这种情况下的心室颤动可能是复苏努力的继发性并发症，由低碳酸血症性碱中毒、心脏的物理操作和复温引发。
