Evaluation of the diagnostic efficacy of the fetal umbilical artery combined with middle cerebral artery hemodynamics in single pregnancy complicated with vela placenta

ObjectiveTo investigate the diagnostic efficacy of fetal umbilical artery(UA) combined with middle cerebral artery(MCA) hemodynamics in single pregnancy complicated with vela placenta.

MethodsFifty cases of single pregnancy women from November 2017 to November 2020 were set as the control group, and 50 pregnancy women with single pregnancy complicated with vela placenta were set as the observation group.The UAincluding peak systolic velocity/end-diastolic velocity(S/D), resistance index(RI) and pulsation index(PI) of umbilical artery, MCA hemodynamics(RI and PI) in two groups were measured using color Doppler ultrasound.The ROC curve was drawn to analyze the diagnostic efficacy(sensitivity and specificity) of UA and MCA hemodynamics in single pregnancy complicated with vela placenta.

ResultsThe levels of S/D, RI and PI in UA hemodynamics in observation group were higher than those in control group(P < 0.01).The levels of RI and PI in MCA hemodynamics in observation group were lower than those in control group(P < 0.01).The results of ROC curve showed that the diagnostic efficacy of UA combined with MCA hemodynamics in single pregnancy complicated with vela placenta was higher than that of UA or MCA hemodynamics alone(P < 0.01).The sensitivities of single UA or MCA and the combination of UA and MCA were 79.43%, 84.17% and 93.51%, respectively.The specificities of single UA or MCA and two combination of UA and MCA were 67.81%, 65.67% and 61.42%, respectively.

ConclusionsIn UA hemodynamics, the expression levels of S/D, RI and PI in patients with single pregnancy complicated with vela placenta are high, while the level of MCA hemodynamics is low.Strengthening the combined determination of fetal UA and MCA can obtain the high diagnostic efficacy, which can guide the clinical treatment.