本文選題：正常胎兒　切入點：主動脈峽部　出處：《河南醫(yī)學研究》2017年14期 　論文類型：期刊論文

【摘要】：目的 探討正常胎兒的主動脈峽部收縮指數(shù)范圍,并對其同孕周之間的關系進行分析。方法 隨機選取于漯河市第三人民醫(yī)院2013年2月至2015年4月出生的251例正常胎兒,產(chǎn)婦孕周18~37周,對所有胎兒均進行頻譜多普勒超聲檢查,對其主動脈峽部血流頻譜圖像進行分析,并對收縮末期最低點血流速度(NS)、收縮期峰值血流速度(PSV)進行測量,進行主動脈峽部收縮指數(shù)(ISI)計算,并對其同孕周之間的關系進行分析。結(jié)果 孕18~24周胎兒的ISI值位于0.19~0.21,隨著胎兒孕周的增大,其NS逐漸降低,而PSV則呈現(xiàn)逐漸升高的趨勢;在孕28周左右,胎兒的主動脈下部血流頻譜可見明顯收縮末期減速,此種趨勢造成在孕30周附近ISI接近0,之后ISI的下降趨勢持續(xù)增加,在妊娠末期胎兒的ISI平均值約為-0.33。結(jié)論 正常胎兒的主動脈峽部ISI、NS、PSV同孕周呈曲線相關性,通過對胎兒進行產(chǎn)前主動脈峽部收縮指數(shù)分析,可為腦血管畸形、心血管畸形等先天性畸形發(fā)育的診斷及評估提供可靠的依據(jù)。
[Abstract]:Objective to explore the range of aortic isthmus contraction index of normal fetuses and analyze the relationship between isthmus index and gestational age. Methods 251 normal fetuses born in Luohe third people's Hospital from February 2013 to April 2015 were randomly selected. At 18 to 37 weeks of gestation, all fetuses were examined by spectral Doppler ultrasound, and the spectral images of aortic isthmus blood flow were analyzed, and the lowest systolic blood flow velocity (NSV) and peak systolic blood flow velocity (PSV) were measured. The isthmus contraction index (ISI) of aorta was calculated and the relationship between isthmus and gestational weeks was analyzed. Results the ISI of fetuses at 1824 weeks of gestation was 0.19 鹵0.21. With the increase of gestational weeks, NS decreased gradually, while PSV increased gradually. At 28 weeks of gestation, the blood flow spectrum of the lower aorta of the fetus showed a significant deceleration at the end of contraction, which resulted in the ISI approaching zero near the 30th week of gestation, and the decreasing trend of ISI continued to increase after 30 weeks of gestation. The average value of ISI in fetuses at the end of pregnancy is about -0.33. Conclusion the isometric isthmus of normal fetuses has a curve correlation with gestational weeks. By analyzing the contraction index of isthmus of aorta before delivery, it is suggested that the isthmus isthmus of normal fetuses is cerebrovascular malformation. The diagnosis and evaluation of congenital malformation such as cardiovascular malformation provide reliable basis.
【作者單位】： 漯河市第三人民醫(yī)院超聲科;
【分類號】：R445.1;R714.5

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本文編號：1610094