Gehl L G, Mintz G S, Kotler M N, Segal B L
Am J Cardiol. 1982 Jan;49(1):33-8. doi: 10.1016/0002-9149(82)90274-0.
Left atrial volume in patients with mitral valve disease was studied with two dimensional echocardiography. The left atrial dimension was derived by planimetry of the left atrial area and, assuming spherical geometry, left atrial volume was calculated. Patients with severe mitral regurgitation had marked systolic expansion of the left atrium with large phasic changes in left atrial cubic dimension. Conversely, patients with severe mitral stenosis had small changes in the cubic dimension in comparison with the large left atrial size. Left atrial volumetric changes were similar among patients with atrial fibrillation and normal sinus rhythm. Therefore, left atrial volume overload is an additional two dimensional echocardiographic diagnostic feature of severe mitral regurgitation.
采用二维超声心动图对二尖瓣疾病患者的左心房容积进行了研究。通过对左心房面积进行平面测量得出左心房内径，并假设为球形几何形状来计算左心房容积。重度二尖瓣反流患者的左心房在收缩期有明显扩张，左心房立方径有较大的阶段性变化。相反，重度二尖瓣狭窄患者的立方径变化较小，但其左心房尺寸较大。心房颤动患者和窦性心律正常患者的左心房容积变化相似。因此，左心房容量超负荷是重度二尖瓣反流的另一个二维超声心动图诊断特征。
