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近年来,国内外学者对心脏复苏从基础理论到临床实践都进行了深入的研究,提出了许多新概念和新观点。本文仅就心脏复苏时的血流机制、复苏药物的合理应用及给药途径作一简要述评。 1.胸腔泵机制学说过去认为,胸部按压时的血液流动是心脏直接受挤压的结果。近年来的动物实验与人体研究表明,上述机制是不全面的。实际上,在胸部按压时,心脏可能仅是一个被动的管道。胸外按压使胸腔内压力增高,这种压力可平均地传到胸腔内所有动静脉。由于动脉不萎陷,压力几乎可全部从胸腔内动脉传至胸腔外动脉。而由干静脉瓣的存在及静
In recent years, domestic and foreign scholars have conducted in-depth research on heart resuscitation from basic theory to clinical practice, and put forward many new concepts and new ideas. In this paper, only a brief review is made on the blood flow mechanism during cardiopulmonary resuscitation, the rational application of resuscitative drugs and the route of administration. 1. Thoracic pump mechanism theory In the past that the blood flow in chest compression is the result of direct compression of the heart. In recent years, animal experiments and human studies have shown that the above mechanism is not comprehensive. In fact, the heart may be just a passive tube when the chest is pressed. Thoracic pressure to increase intrathoracic pressure, this pressure can be evenly spread to all intra-thoracic arteriovenous. As the artery does not collapse, almost all the pressure from the intrathoracic artery to the extrathoracic artery. The existence of dry vein valve and static