Clinical value of prenatal MRI in placenta accreta and postpartum hemorrhage in patients with complete placenta previa
JIANG Haidong
SHEN Junjie
WANG Wei
ZHANG Wenting
Abstract：Objective To explore the clinical value of MRI in identifying high-risk factors for placenta accreta and postpartum hemorrhage in patients with complete placenta previa.Methods A total of 50 patients with complete placenta previa admitted to the First Affiliated Hospital of Bengbu Medical University from November 2020 to October 2024 were selected as the study subjects.Based on pathological results,the patients were divided into a placenta accreta group(n=41)and a non-placenta accreta group(n=9).According to the occurrence of postpartum hemorrhage,the patients were further divided into a postpartum hemorrhage group(n=42)and a non-postpartum hemorrhage group(n=8).The relationship between MRI features and the occurrence of placenta accreta and postpartum hemorrhage in patients with complete placenta previa was analyzed.The Kappa consistency test was used to evaluate the diagnostic efficacy of prenatal MRI.Multivariate logistic regression analysis was performed to assess MRI features as independent risk factors for postpartum hemorrhage.Results Prenatal MRI findings showed good consistency with pathological results(Kappa=0.675).Comparisons between the placenta accreta group and the non-placenta accreta group,as well as between the postpartum hemorrhage group and the non-postpartum hemorrhage group,revealed statistically significant differences in six out of seven MRI features(P<0.05),except for the sign of thickened and irregular bladder wall.Multivariate logistic regression analysis indicated that the T2WI low-signal band and placental thickness in the lower uterine segment were independent risk factors for postpartum hemorrhage(P<0.05).Conclusion Prenatal MRI demonstrates high consistency with pathological results in diagnosing placenta accreta.The T2WI low-signal band and placental thickness in the lower uterine segment are independent risk factors for predicting postpartum hemorrhage,providing valuable predictive insights for clinical diagnosis and treatment.
Keywords：complete placenta previamagnetic resonance imagingplacenta accretapostpartum hemorrhage
Publication Date：2025-04-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 441-445 )