Chia B L, Ee B K
Cardiac Department, National University Hospital, Singapore.
Singapore Med J. 1996 Aug;37(4):378-9.
Although idiopathic dilatation of the pulmonary artery is uncommon, it requires to be distinguished from other important congenital heart diseases for which it may be confused clinically. We describe the two-dimensional (2D) and Doppler echocardiographic findings in two patients with this condition. Enlargement of the main pulmonary artery and right ventricle was demonstrated in both patients using 2D echocardiography. Pulmonary regurgitation was confirmed in Case 1 by both pulsed-Doppler echocardiographic and Doppler colour flow imaging studies and in Case 2 by microbubbles (which were generated from saline-injection into a peripheral vein) oscillating up and down across the pulmonary valve in systole and diastole respectively.
尽管特发性肺动脉扩张并不常见，但需要与其他可能在临床上与之混淆的重要先天性心脏病相鉴别。我们描述了两名患有这种疾病的患者的二维（2D）和多普勒超声心动图检查结果。两名患者通过二维超声心动图均显示主肺动脉和右心室增大。病例1通过脉冲多普勒超声心动图和多普勒彩色血流成像研究证实存在肺动脉反流，病例2通过微泡（由向周围静脉注射生理盐水产生）分别在收缩期和舒张期上下振荡穿过肺动脉瓣得以证实。
