论文部分内容阅读
左图为1例三度房室阻滞患者的心电图及跨二尖瓣血流图的同步记录,可见房波规律出现并快于心室QRS(R)波,同时R波又以自己的节律规律出现。心房波受窦房结控制,心室波由室性自搏性节律点控制,即使P波与QRS波相距120ms~200ms内,也视为两者相遇而无传导关系,心电处于完全分离状态。但跨二尖瓣血流图上仍存在着2组波:紧跟R波和T波后的E峰,紧跟P波后的A峰。T波后紧跟E峰,这是心室主动舒张产生的“负压”将心房血流“回抽”到心室时产生的。此外,P波起始50ms后将
The left picture shows the electrocardiogram and the trans-mitral valve blood flow record in one patient with third-degree atrioventricular block. The results show that the atrial-wave rule appears faster than the ventricular QRS (R) wave and the R-wave has its own rhythm appear. Atrial wave is controlled by the sinus node, and ventricular wave is controlled by ventricular spontaneous rhythm. Even if P wave and QRS wave are within 120ms ~ 200ms, it is considered that the two have no conduction and the ECG is completely separated. However, there are still two groups of waves across the mitral valve blood flow diagram: the E peak immediately following the R wave and the T wave, followed by the A peak after the P wave. T wave followed by E peak, which is produced by the active relaxation of the ventricular “negative pressure ” will be atrial blood flow “back pumping ” to the ventricle generated. In addition, P wave will be 50ms after the start