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对于呼气末正压换气(PEEP)并发心搏出量减少的机理曾有以下解释:1.当胸内压增高时胸内部分血液转入体循环;2.心肌收缩力的反射性抑制;3.肺血管阻力增加;4.室间隔向左心室偏移导致心室反应失常。作者认为,实验结果及解释的不同与实验的条件与方法不同有关。因此,为了尽可能在接近正常生理
The mechanism for PEEP-induced decrease in cardiac output has been explained as follows: 1. When the intrathoracic pressure increases, part of the blood is transferred into the systemic circulation; 2. The reflex inhibition of myocardial contractility; 3. Pulmonary vascular resistance increased; 4. Ventricular septal left ventricular deviation lead to ventricular dysfunction. The author believes that the difference between experimental results and explanations is related to different conditions and methods of experiments. Therefore, in order to be as close as possible to normal physiology