【摘要】：目的探討彩色多普勒超聲檢測妊娠中期胎兒大腦中動脈M1段不同節(jié)段(M1段近中1/3處、M1段遠端)血流動力學(xué)指標(biāo)的差異,探查最佳的檢測部位。方法選取2014年12月—2015年5月在江蘇大學(xué)附屬醫(yī)院超聲科行妊娠中期胎兒結(jié)構(gòu)篩查的孕婦124例為研究對象。檢測胎兒大腦中動脈M1段近中1/3處和M1段遠端的血流動力學(xué)指標(biāo)〔收縮期峰值流速(PSV)、阻力指數(shù)(RI)、搏動指數(shù)(PI)和收縮期峰值流速/舒張末期流速(S/D)〕。結(jié)果排除胎兒宮內(nèi)活動頻繁、臍帶繞頸、羊水量異常等孕婦16例,最終共有108例孕婦納入本研究,成功率為87.1%。彩色多普勒超聲胎兒大腦中動脈M1段不同節(jié)段的血流頻譜均呈鋸齒狀,在整個心動周期中均為單向血流,舒張期無反向血流信號。大腦中動脈M1段近中1/3處PSV、RI、PI、S/D高于M1段遠端(P0.05)。結(jié)論妊娠中期胎兒大腦中動脈M1段近中1/3處血流動力學(xué)指標(biāo)高于M1段遠端,M1段近中1/3處得到的血流動力學(xué)指標(biāo)更加準(zhǔn)確客觀。
[Abstract]:Objective to investigate the difference of hemodynamic parameters in different segments of the middle cerebral artery (M1) in the second trimester of pregnancy by color Doppler ultrasound (CDFI). Methods from December 2014 to May 2015, 124 pregnant women who were screened for fetal structure in second trimester of pregnancy in Department of Ultrasound, affiliated Hospital of Jiangsu University were selected as study objects. The hemodynamic indexes (peak systolic velocity (PSV), resistance index (RI),) of the fetal middle cerebral artery M1 segment were measured at the proximal middle 1 / 3 segment and the distal portion of M1 segment. Pulsatile index (PI) and systolic peak velocity / end-diastolic velocity (S / D).) Results there were 16 pregnant women, including frequent intrauterine activity, umbilical cord around neck, abnormal amniotic fluid, and 108 pregnant women were included in this study. The success rate was 87.1%. The blood flow spectrum of different segments of M1 segment of fetal middle cerebral artery was serrated by color Doppler ultrasound. It was unidirectional flow in the whole cardiac cycle and no reverse flow signal in diastolic phase. The PSV,RI,PI,S/D of M1 segment of middle cerebral artery was higher than that of distal segment of M1 segment (P 0.05). Conclusion the hemodynamic indexes of middle cerebral artery M1 in the second trimester of pregnancy are higher than those in the distal segment of M1 segment, and the hemodynamic indexes obtained at the proximal and middle part of M1 segment are more accurate and objective.
【作者單位】： 江蘇大學(xué)附屬醫(yī)院超聲科;
【分類號】：R445.1;R714.5

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