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脑对血循环停顿的耐受性甚差,一般认为如停顿超过四分钟即招致不可逆性损害。作者的动物实验表明心脏的血循环如能有效地维持,脑可耐受12～14分钟而无脑部病理改变,可耐受16分钟而无明显的临床神经系后遗症。心脏血循环有效地维持,可保证全身血循环恢复后血压即时恢复和脑部即时获得血液的正常供给。反之,如心脏血循环不能有效地维持,即使全身血循环恢复,亦将引起心
The brain is poorly tolerant of circulatory arrest, and it is generally accepted that irreversible damage can result if it pauses for more than four minutes. The authors’ animal experiments show that if the heart’s blood circulation can be effectively maintained, the brain can tolerate 12 to 14 minutes without pathological changes in the brain, can tolerate 16 minutes without significant clinical neurological sequelae. Effective maintenance of cardiac blood circulation, blood circulation can be restored immediately after the resumption of blood pressure and the brain immediately get the normal blood supply. On the contrary, if the heart blood circulation can not be effectively maintained, even if systemic blood circulation is restored, it will also cause heart