No patients presented any specific symptoms, continuous murmur could be heard in 1 patient, but not in those 5 patients.
临床上无特征性症状，其中5例因分流量较小，听诊未闻及连续性杂音。
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。
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。
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