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目的使用斑点追踪技术观察妊娠高血压对胎儿出生前后心肌力学影响的特点。方法使用斑点追踪技术分别测量50例正常孕妇及50例妊娠高血压孕妇胎儿及新生儿室间隔和左侧壁基底段、中间段及心尖段心肌纵向应变率(SLR-S)峰值。结果妊娠高血压组胎儿、产后28d胎儿室间隔、左室侧壁舒张末期厚度较对照组增加,LVEF下降(P<0.05)。妊娠高血压组胎儿、产后28d胎儿室间隔、左侧壁基底段、中间段及心尖段心肌纵向应变率收缩期及舒张期峰值较对照组均降低。结论妊娠高血压可造成胎儿及新生儿心肌功能损害。
Objective To observe the effect of pregnancy-induced hypertension on myocardial mechanics before and after birth by speckle tracking. Methods The vertical strain rate (SLR-S) of basal segment, middle segment and apical segment of the interventricular septum and the left wall of 50 normal pregnant women and 50 pregnant women with pregnancy-induced hypertension were measured by dot-tracing technique. Results The gestational hypertension group fetus, postnatal 28d fetal ventricular septum, left ventricular wall end-diastolic thickness increased compared with the control group, LVEF decreased (P <0.05). The gestational hypertension group fetus, 28d postpartum fetal ventricular septum, basal segment of the left side of the wall, the middle segment and the apex of myocardial longitudinal strain rate systolic and diastolic peak were lower than the control group. Conclusion Pregnancy-induced hypertension can cause impaired myocardial function in the fetus and neonates.