摘要:
目的:应用组织多普勒成像(tissue Doppler imaging,TDI)技术评估宫内发育迟缓(intrauterine growth retardation,IUGR)胎儿心功能情况.方法:测量IUGR组与对照组胎儿房室瓣口血流速度(E,A),瓣环运动速度(E',A,S'),等容收缩时间(isovolumetric contraction time,ICT),射血时间(ejection time,ET),等容舒张时间(isovolumetric relaxation time,IRT);计算E/A,E'/A',E/E',E/(E'×S')及心肌做功指数(myocardial performance index,MPI).结果:IUGR胎儿E,A,E/A较对照组有减低趋势,但差异无统计学意义(P>0.05);E',A',S',E'/A'较对照组明显减低(p<0.05);E/E',E/(E'×S'),MPI较对照组增高(P<0.05).结论:IUGR胎儿心脏舒张、收缩功能较正常降低.