Yabek S M, Isabel-Jones J, Bhatt D R, Nakazawa M, Marks R A, Jarmakani J M
Circulation. 1976 Feb;53(2):268-72. doi: 10.1161/01.cir.53.2.268.
The feasibility of determining left atrial volumes (LAV) from LA echo dimensions was assessed in 36 children (group I) with normal cineangiographically determined LAV and 16 children (group II) with LAV overload. Conventional LA echo dimensions, obtained within 24 hours of cardiac catheterization, were compared to the angiographic LA anterior-posterior minor axes (LAmA) and LAV. There was excellent correlation betweeh the LA echo dimensions and the LAmA. In all patients, the LA echo less than LAmA, the differences being more pronounced in group II. Good correlations were found between the LAV and the LA echo, and were expressed by the equations LAV = 7.5 LA echo1.8 (r = .85) and LAV = 8.1 LA echo2.1 (r = .86) for groups I and II, respectively. Changes in LA configuration with volume overload were shown to cause a disproportionate increase in LAmA compared to the other LA dimensions and the LA echo dimension, thus necessitating the separate regression equations. Echo LA to aortic ratios were 0.86 +/- 0.11 and 1.21 +/- 0.23 (mean +/- SD) for groups I and II, respectively. This method of estimating LAV can be useful in the management of left-to-right intracardiac shunts and mitral regurgitation in infants and children.
对36名经心血管造影确定左心房容积（LAV）正常的儿童（I组）和16名LAV超负荷的儿童（II组）评估了根据左心房超声尺寸确定LAV的可行性。将在心脏导管插入术24小时内获得的传统左心房超声尺寸与血管造影的左心房前后短轴（LAmA）和LAV进行比较。左心房超声尺寸与LAmA之间存在极好的相关性。在所有患者中，左心房超声尺寸小于LAmA，在II组中差异更明显。LAV与左心房超声之间发现了良好的相关性，I组和II组分别用方程LAV = 7.5 LA echo1.8（r = 0.85）和LAV = 8.1 LA echo2.1（r = 0.86）表示。结果显示，容量超负荷时左心房形态的变化导致LAmA相对于左心房的其他尺寸和左心房超声尺寸不成比例地增加，因此需要单独的回归方程。I组和II组的超声左心房与主动脉比值分别为0.86±0.11和1.21±0.23（平均值±标准差）。这种估计LAV的方法在婴幼儿心内左向右分流和二尖瓣反流的管理中可能有用。
