Pell A C, Guly U M, Sutherland G R, Steedman D J, Bloomfield P, Robertson C
Department of Cardiology, Royal Infirmary, Edinburgh.
J Accid Emerg Med. 1994 Sep;11(3):139-43. doi: 10.1136/emj.11.3.139.
Transoesophageal echocardiography (TOE) was performed during closed chest cardiopulmonary resuscitation (CPR) in 18 subjects in cardiac arrest. Compression of all four cardiac chambers resulted in forward flow in the pulmonary and systemic circulations, retrograde pulmonary vein flow and incomplete mitral valve closure. Antegrade pulmonary vein flow and left ventricular filling occurred exclusively during the relaxation phase. These findings support the cardiac pump theory of CPR and are incompatible with the thoracic pump mechanism. TOE merits further investigation as a device to monitor and guide resuscitation efforts during CPR.
对18名心脏骤停患者在闭胸心肺复苏（CPR）期间进行了经食管超声心动图（TOE）检查。对所有四个心腔的按压导致肺循环和体循环出现前向血流、肺静脉逆向血流以及二尖瓣不完全关闭。肺静脉前向血流和左心室充盈仅发生在舒张期。这些发现支持CPR的心脏泵理论，与胸泵机制不相符。经食管超声心动图作为一种在CPR期间监测和指导复苏努力的设备值得进一步研究。
