Webber S A, Sandor G G, Patterson M W
Department of Paediatrics, British Columbia Children's Hospital, University of British Columbia, Vancouver, Canada.
Eur Heart J. 1992 May;13(5):642-5. doi: 10.1093/oxfordjournals.eurheartj.a060229.
Turbulent left-to-right trans-septal diastolic blood flow with a peak velocity greater than 0.5 m.s-1 was detected by pulsed Doppler echocardiography in 10 out of 204 (4.9%) children with isolated small ventricular septal defects. For children older than 10 years, it was observed in over a quarter of cases (27%). Peak diastolic velocities ranged from 0.6-1.9 m.s-1 (mean 1.2 m.s-1) and in all patients the duration of diastolic flow exceeded that of the systolic trans-septal jet. Three different patterns of diastolic flow were observed and in eight cases pre-systolic acceleration was present. Turbulent diastolic flow across small ventricular septal defects is a common finding in older children and should not be confused with other causes of disturbed diastolic flow within the right ventricle.
在204例孤立性小型室间隔缺损患儿中，经脉冲多普勒超声心动图检测发现，10例（4.9%）患儿存在舒张期从左向右的跨间隔湍流，峰值速度大于0.5m/s。对于10岁以上的患儿，超过四分之一的病例（27%）观察到这种情况。舒张期峰值速度范围为0.6 - 1.9m/s（平均1.2m/s），所有患者舒张期血流持续时间超过收缩期跨间隔射流。观察到三种不同的舒张期血流模式，8例患者存在收缩前期加速。小型室间隔缺损处的舒张期湍流在大龄儿童中很常见，不应与右心室内舒张期血流紊乱的其他原因相混淆。
