Sold G, Zwehl W, Vogt A, Kamp M, Neuhaus K L, Kreuzer H
Z Kardiol. 1981 May;70(5):357-63.
Using apical long axis and precordial short axis views, left ventricular end-diastolic and end-systolic volumes and ejection fraction were determined by cross-sectional echocardiography and compared with biplane angiocardiography. 10 anesthetized, closed chest dogs were first studied in the control state. Inferior vena cava was occluded by a balloon-inflated catheter, measurements were repeated. Descending aorta was blocked, with measurements retaken. Finally 8 dogs were studied after left coronary artery occlusion. For enddiastolic volumes correlation coefficients were 0.89, 0.93, 0.89, and 0.90 respectively (n = 10, 10, 10, 8; p less than 0.01). End-systolic volumes correlated with r 0.94, 0.92, 0.83, 0.92 (p less than 0.01). Left ventricular volumes were systematically underestimated by echocardiography (p less than 0.05). Ejection fraction corresponded less favourably, overall r was 0.85 (n = 38; p less than 0.01). Thus, cross-sectional echocardiography appears suitable for quantifying left ventricular volumes, less ejection fraction in the dog, during acute interventions as well as in the presence of regional dysfunction.
采用心尖长轴和心前区短轴视图，通过横断面超声心动图测定左心室舒张末期和收缩末期容积以及射血分数，并与双平面心血管造影术进行比较。首先对10只麻醉状态下的开胸犬在对照状态下进行研究。用球囊充盈导管阻断下腔静脉，重复测量。阻断降主动脉，再次测量。最后对8只犬在左冠状动脉闭塞后进行研究。舒张末期容积的相关系数分别为0.89、0.93、0.89和0.90（n = 10、10、10、8；p < 0.01）。收缩末期容积的相关系数r为0.94、0.92、0.83、0.92（p < 0.01）。超声心动图系统性地低估了左心室容积（p < 0.05）。射血分数的相关性较差，总体r为0.85（n = 38；p < 0.01）。因此，横断面超声心动图似乎适用于在急性干预以及存在局部功能障碍的情况下对犬的左心室容积进行定量，对射血分数的定量效果较差。
