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目的 :探讨彩色多普勒监测胎儿窘迫时血流动力学的变化在围产儿监护方面的价值。方法 :仪器使用丹麦产维曼 - 72 5彩色多普勒超声诊断仪 ,监测胎儿窘迫时脐动脉 (UA)、肾动脉 (RA)、脑动脉 (CA)血流的S/D值、RI值、PI值。以胎儿窘迫 10 0例作为窘迫组 ,同期正常妊娠 10 0例作为对照组。结果 :窘迫组UA、RA血流阻力指数较对照组均有显著升高 (P <0 .0 1,P <0 .0 5 ) ,CA血流S/D值显著升高 (P <0 .0 1) ,而RI、PI值无明显升高 (P >0 .0 5 ) ,仅以UA、RA血流阻力升高时 ,新生儿多为结局良好 ,但同时伴有CA血流阻力升高时 ,新生儿窒息率达 6 2 5 0 %( 10 / 16 ) ,伴有CA血流阻力明显下降者 ,新生儿预后差。结论 :胎儿窘迫时胎儿血流动力学变化为胎儿缺氧早期周围血管阻力升高 ,缺氧严重时 ,脑血管阻力发生变化 ,彩色多普勒监测胎儿宫内缺氧及严重程度具有较高的价值
Objective: To investigate the value of color Doppler monitoring of fetal distress hemodynamic changes in perinatal care. Methods: The Danish-made Wieman-72 5 color Doppler ultrasound was used to monitor the S / D and RI values of umbilical artery (UA), renal artery (RA) and cerebral artery (CA) , PI value. One hundred cases of fetal distress were treated as distress group and the normal pregnancy as control group. Results: The index of blood flow resistance of UA and RA in distress group was significantly higher than that in control group (P <0.01, P <0.05), and the S / D of CA blood flow was significantly increased (P <0.01). 0 1), while RI and PI had no significant increase (P> 0.05). Only UA and RA increased blood flow resistance, newborns mostly had good outcome, but accompanied with CA blood flow resistance increase High, neonatal asphyxia reached 6250% (10/16), accompanied by a significant decline in CA blood flow resistance, poor prognosis in newborns. CONCLUSION: Fetal hemodynamic changes during fetal distress are caused by increased vascular resistance in the early stage of fetal hypoxia and changes in cerebral vascular resistance during severe hypoxia. Color Doppler monitoring of fetal intrauterine hypoxia and its severity has a high value