摘要
目的 应用组织多普勒成像（TDI）检测新生儿房室环运动，探讨不同胎龄早期新生儿左右心室功能的特点。方法 采用TDI技术检测生后3—7d的36例胎龄32～36周早产儿（早产儿组）和33例足月新生儿（足月儿组）二、三尖瓣环运动，测量收缩期峰值速度（Sa）、舒张早期峰值速度（Ea）及舒张晚期峰值速度（Aa），以脉冲多普勒显像测量舒张期二、三尖瓣口血流E峰及A峰峰值速度。结果 早产儿组各部位Ea、Sa均显著低于足月儿组，早产儿组三尖瓣环Ea／Aa显著低于足月儿组，两组Aa及E／Ea无显著差异；各部位Ea、Sa与胎龄及出生体质量均呈正相关。结论 早产儿左、右室收缩及舒张功能均低于足月儿，早期新生儿心室功能与其出生前成熟程度有关，早产儿及足月新生儿生后早期左室舒张功能均明显增强。
Objective To assess ventricular function of early stage neonates of different gestational ages by tissue doppler imaging（TDI）. Methods Pulsed wave TDI velocities were obtained in 36 cases of premature infants with gestational ages of 32 to 36 weeks （ premature group） and 33 cases of full -term infants（ full- term group） aged 3 to 7 days at the lateral mitral annulus（ MA）, basal septum, and lateral tricuspid annulus （TA） during ventricular systole （ Sa）, early diastole （ Ea）, late diastole （Aa）. Tansmitral and transtricuspid inflow were also obtained through pulsed doppler echocardiography. Results Ea and Sa in all of 3 locations were lower in the premature group compared with that of the full -term group,and Ea/Aa in TA was lower in premature group,but Aa and E/Ea showed no difference between 2 groups. Ea and Sa showed a positive correlation with gestational age and birth weight. Conclusions Ventricular systolic and diastolic function in premature infants are poorer than that in full - term infants in the early stage of neonatal period,and ventricular function is related to intra - uterus growth and maturi- ty of the newborn. Diastolic function of the left ventricle in both groups develops rapidly during the early stage of neonatal period.
出处
《实用儿科临床杂志》
CAS
CSCD
北大核心
2007年第1期26-28,共3页
Journal of Applied Clinical Pediatrics
关键词
组织多普勒成像
心室功能
婴儿
新生
tissue doppler imaging
ventricular function
infant, newborn
作者简介
刘雪芹，女，副主任医师，博士学位，研究方向为心血管疾病。
