Evaluation Effect of Color Doppler Ultrasound in Late Pregnancy on Fetal Growth Restriction
Objective To study the evaluation effect of color Doppler ultrasound in late pregnancy on fetal growth restriction.Methods A total of 64 pregnant women with fetal growth restriction in the third trimester admitted to our hospital from January 2020 to December 2022 were selected as the observation group,and 64 healthy pregnant women in the third trimester during the same period were selected as the control group.Both groups of pregnant women were examined by color Doppler ultrasound.The fetal growth parameters(head circumference,biparietal diameter,abdominal circumference,femoral diameter),blood flow parameters in fetal umbilical artery(UA)and middle cerebral artery(MCA)[resistance index(RI),pulsatility index(PI),systolic blood flow peak velocity/end-diastolic blood flow velocity(S/D)],fetal ductus venosus(DV)blood flow parameters(S peak velocity,a wave velocity)were compared between the two groups,and the diagnostic efficacy of blood flow parameters alone and in combination on fetal growth restriction was analyzed.Results The fetal head circumference,biparietal diameter,abdominal circumference and femoral diameter in the observation group were smaller than those in the control group(P＜0.05).The blood flow parameters RI,PI and S/D of UA in the observation group were higher than those in the control group(P＜0.05).The blood flow parameters RI,PI and S/D of MCA in the observation group were lower than those in the control group(P＜0.05).The blood flow parameters S peak velocity and a wave velocity of DV in the observation group were lower than those in the control group(P＜0.05).The sensitivity and Youden index of combined diagnosis were higher than those of other single indexes(P＜0.05).Among the single indexes,the sensitivity of MCA index was the highest,and the specificity of UA index was the highest.Conclusion Color Doppler ultrasonography in late pregnancy has important evaluation value for fetal growth restriction,especially in RI,PI,S/D value of UA and MCA,S peak velocity and a wave velocity index of DV.The above indexes can be used for screening and evaluation in clinic,but the combined diagnosis has the highest value,which can provide more accurate reference for clinic.
Late pregnancyColor Doppler ultrasoundFetal growth restriction
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