【摘要】 目的 :探讨胎儿脑 -胎盘率 (Pl MCA/ PIUA)对胎儿宫内低氧的早期诊断价值。方法 :运用彩色多普勒超声产前专项监测胎儿大脑中动脉 (MCA)和脐动脉 (UA)的血流搏动指数 (PI)值 ,然后把 Pl MCA和 PIUA进行比值计算。结果 :胎儿脑 -胎盘率 (Pl MCA/ PIUA) <1时 ,正常妊娠组胎儿低氧者占 10 % ;妊高征组胎儿宫内低氧者占 72 % ,明显高于正常妊娠组 (P<0 .0 1) ;IUGR组胎儿宫内低氧者占 93.5 % ,明显高于正常妊娠组 (P<0 .0 1)。结论 :对胎儿脑 -胎盘率(Pl MCA/ PIUA)测算可早期发现胎儿宫内低氧状态 ,在胎儿窘迫发生前作出诊断 ,为临床及时纠正胎儿宫内低氧提供了可靠依据。更多还原

【Abstract】 Objective:To discuss the clinical value of the fetal cerebroplacental ratio(Pl MCA /PI UA ) in early diagnosis of fetal intrauterine hypoxia.Methods:The blood flow pulsatile indexes(PI)of the fetal middle cerebral artery(MCA)and the umbilical artery(UA)were monitored by color Doppler ultrasonography and then the Pl MCA and PI UA ratios were calculated.Results:When(Pl MCA /PI UA )<1,cases with intrauterine hypoxia accounted for 10% in the control group,but 72% in the pregnancy induced hypertension group and 93 5% in the intrauterine growth retardation group.The difference was significant( P <0 01) as compared to the control.Conclusions:This study showed that the assessment of Pl MCA /PI UA can help to detect fetal hypoxia earlier and diagnose fetal distress befroe it occurs so as to provide reliable bases in the treatment of fetal hypoxia.更多还原