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CPR期同心脑所需血流量的确定早期报道成功的心脑复苏以4～10min为限,但最近动物研究和临床报道说明,在常温下大脑半球缺血发生不可逆损伤之前,心脑的耐受时间可分别达15～20min和22min以上。另有研究旨在确定CPR期间能维持组织活力并恢复自主循环,心肌和脑所需的最低血流量。方法之一是测定CPR期间心肌需氧量,亦即心肌氧耗量(MVO_2)或心肌所需氧供(MDO_2)。MDO_2系心肌血流量(MBF)与CaO_2
CPR concentric blood flow required to determine the early report of successful cardioversion in 4 ~ 10min is limited, but recent animal studies and clinical reports indicate that at room temperature before the occurrence of irreversible damage to the cerebral hemisphere ischemia, the heart and brain resistance The time can be up to 15 ~ 20min and 22min respectively. Additional studies aimed to determine the minimum blood flow needed to maintain tissue vitality and restore autonomic circulation, myocardium and brain during CPR. One way is to determine myocardial oxygen demand, or myocardial oxygen demand (MVO_2) or myocardial oxygen demand (MDO_2) during CPR. MDO_2-induced myocardial blood flow (MBF) and CaO_2