Application value of color Doppler ultrasound in hemodynamic changes and fetal outcome analysis of umbilical artery and middle cerebral artery in oligohydramnios

Abstract

Objective \nTo study the hemodynamic changes of fetal umbilical artery (UA) and middle cerebral artery (MCA) and its influence on fetal outcome using color Doppler ultrasound. \n \n \nMethods \nFifty pregnant women who underwent color Doppler ultrasound examination in Zhejiang Xin an International Hospital from June to December 2018 with normal prenatal examination were selected as control group, and 80 pregnant women with oligohydramnios during the same period of pregnancy were selected as observation group. Color Doppler ultrasound examination was performed on both groups of pregnant women. The results of color Doppler ultrasound examination were compared between the two groups of pregnant women, and the fetal prognosis was followed up. \n \n \nResults \nCompared with the control group, the peak systolic velocity/end diastolic velocity (S/D), resistance index (RI) and pulsatility index (PI) values of UA in the observation group were significantly increased, while the S/D, RI and PI values of MCA were significantly decreased, and there were significant differences (P < 0.05). In addition, UA of 34 cases (42.5%) in observation group had S/D ≥ 3, which was much higher than that of 8 cases (16.0%) in control group, and there was significant difference (P < 0.05). The difference between the two groups was statistically significant (P < 0.05). The incidence of fetal distress, intrauterine growth retardation (IUGR) and Apgar < 4 points in observation group were significantly higher than those in control group [26.2%(21/80) vs. 12.0%(6/50), 15.0%(12/80) vs. 2.0%(1/50), 7.5% (6/80) vs. 0], and the difference were statistically significant (P < 0.05). \n \n \nConclusions \nPrenatal color Doppler ultrasound can accurately detect the hemodynamic indexes of UA and MCA, predict the fetal intrauterine development, evaluate the fetal outcome, and provide scientific basis for clinical diagnosis. \n \n \nKey words: \nUltrasonography, Doppler, color;\xa0Oligohydramnios;\xa0Umbilical artery;\xa0Middle cerebral artery;\xa0Fetal outcome