在成功的肺动脉环束手术后,大多数病例能较易听到第二心音分裂。有资料显示如环束远侧的肺动脉压低,则此分裂大于40毫秒,如肺动脉压升高则分裂小于40毫秒,提示心音图可作为监测环束后肺动脉压的一种非侵入性检查方法。为此,本文分析38例肺 After successful pulmonary artery ring surgery, most cases can be more easily heard the second heart sound split. Data show that if the distal pulmonary artery pressure is low, then the division greater than 40 milliseconds, such as pulmonary artery pressure increased the split is less than 40 milliseconds, suggesting that phonocardiogram can be used as a monitoring ring after pulmonary artery pressure noninvasive examination. To this end, this article analyzes 38 cases of lung