Emilsson K, Egerlid R, Nygren Bm
Department of Clinical Physiology, Karlskoga Hospital;
Exp Clin Cardiol. 2005 Summer;10(2):111-5.
Echocardiographic evaluation of the heart and its function, especially left ventricular systolic function, has great clinical importance. Systolic function can be measured using several methods, such as the amplitude of motion of the left atrioventricular plane (mitral annulus motion [MAM]) toward the apex during systole. Similarly, right ventricular systolic function can be measured using the motion of the right atrioventricular plane (tricuspid annulus motion [TAM]) toward the apex during systole.
Because the mitral and tricuspid annuli are situated close to each other in the fibrous skeleton between both ventricles and atria, one might think that a decrease in the amplitude of MAM would be followed by a decrease in the amplitude of TAM. The present study was developed to determinine if this anatomical intimacy causes a good correlation between the amplitudes of TAM and MAM.
Nineteen healthy subjects and 103 consecutive patients were included in the study and examined using echocardiography. The amplitudes of TAM and MAM were measured and the correlation between the amplitudes was calculated.
In the 103 consecutive patients, a significant but relatively weak positive correlation was found between TAM and MAM amplitudes (Pearson's correlation coefficient [r]=0.58; P<0.001). In the 19 healthy subjects, no significant correlation was found.
Despite the anatomical intimacy of the annuli, the correlation between the amplitudes of TAM and MAM in consecutive patients was rather weak, and there was no correlation in healthy subjects. These findings could be due to anatomical and physiological differences between the right and left ventricles.
心脏及其功能的超声心动图评估，尤其是左心室收缩功能评估，具有重要的临床意义。收缩功能可通过多种方法测量，例如收缩期左房室平面（二尖瓣环运动[MAM]）向心尖的运动幅度。同样，右心室收缩功能可通过收缩期右房室平面（三尖瓣环运动[TAM]）向心尖的运动来测量。
由于二尖瓣环和三尖瓣环在两个心室与心房之间的纤维骨架中彼此相邻，人们可能会认为MAM幅度降低之后TAM幅度也会降低。本研究旨在确定这种解剖学上的紧密关系是否会导致TAM与MAM幅度之间存在良好的相关性。
本研究纳入了19名健康受试者和103例连续的患者，并采用超声心动图进行检查。测量TAM和MAM的幅度，并计算两者幅度之间的相关性。
在103例连续患者中，TAM与MAM幅度之间存在显著但相对较弱的正相关（Pearson相关系数[r]=0.58；P<0.001）。在19名健康受试者中，未发现显著相关性。
尽管瓣环在解剖学上相邻，但连续患者中TAM与MAM幅度之间的相关性较弱，且在健康受试者中不存在相关性。这些发现可能归因于左右心室在解剖学和生理学上的差异。
