[Umbilical Artery Doppler Study Role In The Monitoring And Obstetric Management Of High-Risk Pregnancies]

to compare aspects of the diastolic component of umbilical artery flow with fetal fate parameters.

this was a prospective, cross-sectional study at the Kaolack Regional Hospital over 6 months including patients with an at-risk pregnancy and a gestational age greater than 20 SA. The aspect of umbilical artery flow, umbilical artery IR and cerebro-placental index were studied.We compared the velocity data with the rates of fetal suffering, low birth weight and perinatal mortality. The statistical analysis was done with EPI info software version 7, Excel 2010 and SPSS 20.0 with a p-value of less than 5%.

46 patients were included with an average age of 24.54 years. The mean gestational age was 33.7 AS. The diastolic component of umbilical artery flow was null in 19.6%; reversed in 10.9%; decreased in 21.7% and normal in 47.8%. Confrontation with fetal fate parameters found a rate of 78.6% fetal suffering in the null or reversed diastolic components group compared to 34.4% in the non-zero diastolic components group. For low birth weight, this rate was 92.9% compared to 28.1%. The perinatal mortality rate was 64.2% compared to 12.5%.

The umbilical artery Doppler study plays a major role in the monitoring and obstetric management of high-risk pregnancies. Our results demonstrate the correlation between a diastolic component of the flow of the pathological umbilical artery and the adverse outcome of the pregnancy at risk.