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胸部按压放松期辅以体外膈肌起搏(EDP)和增强型体外反搏(EECP)的双泵复苏木(EDCPR)对8条犬室颤1分钟后,随机先后予以标准心肺复苏术(SECPR)与EDCPR进行自身对照实验研究。实验结果:EDCPR较SECPR显著提高升主动脉收缩压(P<0.05),舒张压(P<0.01)。而右房舒张压平均值来显著性升高(P>0.05)。冠脉有效灌流压(CPP)显著增加(P<0.01)。提示EECP使动脉血运流升高舒张压,EECP的促进静脉回流与EDP的胸腔负压形成配合,静脉回流血吸入肺循环并流向左心,不升高右房压又增加前负荷,主动脉压收缩压升高。EDCPR既产生了有效的人工通气、调动了大小循环;又较好地改善了心肌血供。
Seven sessions of ventricular fibrillation (VF) of one week after ventricular fibrillation in 8 dogs were randomized to standard cardiopulmonary resuscitation (SECPR) followed by EDCPR with chest compressional relaxation (EDP) and extrinsic counterpulsation (EECP) Self-control experiment with EDCPR. Experimental results: Compared with SECPR, EDCPR significantly increased systolic pressure (P <0.05) and diastolic pressure (P <0.01) in ascending aorta. The right atrial diastolic pressure was significantly higher (P> 0.05). Coronary effective perfusion pressure (CPP) increased significantly (P <0.01). EECP suggests that arterial blood flow to increase diastolic blood pressure, EECP promote venous return and EDP of the formation of chest negative pressure, venous return blood into the pulmonary circulation and flow to the left heart, does not increase the right atrial pressure and increase the preload, aortic pressure Systolic blood pressure increased. EDCPR not only produces effective artificial ventilation, mobilizing the size of the cycle; but also better to improve myocardial blood supply.