论文部分内容阅读
目的:不同的胎儿先天性心脏疾病通过不同的作用机制影响到胎儿心脏功能,会引起胎儿体内血循环的不同改变。静脉导管是胎儿血循环中重要的组成,也会随之出现相应的频谱改变。通过对49例合并先天性心脏疾病胎儿的静脉导管血流频谱及参数进行分析,研究胎儿不同类型心脏疾病对静脉导管(DV)血流频谱的影响。方法:选取2009年1月至2012年12月间我们在产前超声检查中发现的49例合并先天性心脏疾病的胎儿,分别测量DV血流频谱并进行参数分析,根据DV频谱是否正常分为两组。结果:DV频谱正常组有29例(59.18%),表现为S波、a波的流速和方向正常,PVIV及DVRI指标位于正常范围。DV频谱异常组有20例,表现为S波流速降低、a波缺失或反向,PVIV及DVRI升高。结论:DV血流频谱和参数是评价胎儿心功能的良好指标。不同种类胎儿心脏发育异常对胎儿心功能影响的作用机制不同,其DV频谱也有着不同改变。通过对DV频谱的波形和参数分析,了解胎儿心脏异常的病生理机制,评价其严重程度和预后,这对于指导临床诊疗有着重要意义。
OBJECTIVE: Different fetal congenital heart diseases affect fetal cardiac function through different mechanisms of action and can cause different changes in the fetal blood circulation. Intravenous catheters are an important component of the fetal blood circulation, and the corresponding spectral changes also occur. By analyzing the frequency and parameters of venous catheter blood flow in 49 cases of fetuses with congenital heart disease, we studied the influence of different types of fetal heart disease on venous catheter (DV) blood flow spectrum. Methods: Forty-nine fetuses with congenital heart disease found in prenatal ultrasound examination from January 2009 to December 2012 were selected and the DV blood flow spectrum was measured and analyzed. According to whether the DV spectrum was normal or not Two groups. Results: There were 29 cases (59.18%) with normal spectrum of DV, showing S wave, the flow velocity and direction of a wave were normal, and PVIV and DVRI were in the normal range. DV spectrum abnormalities in 20 cases, the performance of the S-wave velocity decreases, a wave loss or reverse, PVIV and DVRI increased. Conclusions: The DV blood flow spectrum and parameters are good indicators of fetal cardiac function. Different types of fetal cardiac dysfunction on the fetal heart function of different mechanisms of action, the DV spectrum also has different changes. Through the waveform and parameter analysis of DV spectrum, we can understand the pathophysiological mechanism of fetal cardiac abnormality and evaluate its severity and prognosis, which is of great significance for guiding clinical diagnosis and treatment.