Huemer G, Kolev N, Zimpfer M
Department of Anaesthesiology and General Intensive Care Medicine, University of Vienna, Austria.
Eur J Anaesthesiol. 1996 Nov;13(6):622-6. doi: 10.1046/j.1365-2346.1996.00051.x.
There has been controversy over whether forward blood flow during closed-chest cardiopulmonary resuscitation (CPR) is generated by a general increase in intrathoracic pressure (chest-pump theory) or by creating atrioventricular gradients that close the mitral valve and open the aortic valve during thoracic compression (cardiac pump theory). The crucial issue is the position of the mitral valve during the downstroke of chest movement. Questions remain over the actual mechanics of mitral and aortic valve function. This report describes an intraoperative cardiac arrest followed by CPR during which routinely instituted two-dimensional transoesophageal Doppler echocardiography enabled study of the motion of the valves of the left heart and the transmitral blood flow.
关于在闭胸心肺复苏（CPR）期间向前的血流是由胸内压的普遍升高（胸泵理论）产生，还是由在胸部按压期间产生关闭二尖瓣并打开主动脉瓣的房室压力梯度（心泵理论）产生，一直存在争议。关键问题是胸部运动向下冲程期间二尖瓣的位置。二尖瓣和主动脉瓣功能的实际机制仍存在疑问。本报告描述了一例术中心脏骤停后进行心肺复苏的病例，在此期间常规进行的二维经食管多普勒超声心动图能够研究左心瓣膜的运动和二尖瓣血流。
