A heart murmur is simply a noise caused by the turbulence of blood flowing through the obstruction from the right ventricle to the pulmonary artery.
心脏杂音是血流从左心室到升主动脉通过狭窄的主动脉瓣口时产生的湍流引起的噪音。
2
Results 4 patients were performed successfully, continuous murmur disappeared, pulmonary pressure decreased significantly, and evident residual drainage disappeared.
结果：4例关闭成功后连续性杂音均消失，肺动脉压明显下降。 彩超无明显残余分流。
3
Results: Their main cause to colour Doppler echocardiography were murmur, cyanosis, panting, asphyxia, feeding-difficulty, Loud pulmonary valve second heart sound.