摘要
目的 应用超声评价正常新生儿肺动脉分支狭窄。方法 应用二维超声 脉冲和持续多普勒及彩色多普勒血流显象对39例正常新生儿肺总动脉及分支的内径、血流速度和压力阶差进行估测,并进行统计学分析。结果 39例新生儿的肺总动脉与其分支间的血流速度和压力阶差有极显著差异(P<0.01);右肺动脉的血流速度和压力阶差>左肺动脉,并有显著性差异(P<0.05)。男女性别间并无显著性差异(P>0.05)。经过2周—6月的随访,上述差异均消失。结论 部分正常新生儿肺总动脉与其分支间可存在血流速度和压力阶差的显著性差异,与性别无关,经3—6月后可消失,为一种暂时性现象。多普勒超声为诊断和随访的敏感而便捷的方法。
Objective To assess the transient stenosis of pulmonary branches in neonetes by echocardiography(echo) .Methods Internal diameters, maximal blood velosity, and pressure gradients in main pulmonary artery( MPA), right pulmonary artery(RPA), and left pulmonary artery (LPA)were evaluated by Two - Dimensional echo, pulse and continuous wave Doppler echo, and Color Doppler Flow Image(CDFI). A paired Students t- test was used for statistical analysis. Results In 39 neonates,there were significant difference in maximal blood velosity,and pressure gradients between MPA and its branches( P < 0.01). The RPA maximal blood velosity pressure gradient was higher than LPA, and was significant difference (P<0.05) .There was no difference between boys and girls. The gradients disappeared within 3-6 months. Conclusion Signicant difference between MPA and its branches might be present in a part of the normal neonates, which disappeared within 3 - 6 months. The differences can be considered as a transitent or physiologic charectristic in neonates.Doppler echo is a sensitive and convenient method for diagnosis and follow- up.
出处
《上海医学影像》
2001年第4期292-294,共3页
Shanghai Medical Imaging
关键词
肺动脉分支狭窄
新生儿
超声心动图
Peripheral pulmonary stenosis Neonate Echocardiography
