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Abstract #4038

Value of MR placental protusion sign in predicting postpartumhemorrhage in patients with placenta previa

Jiping Wang1 and Bei Zhang1

1Department of Radiology, First Hospital of Jilin University, Chang, China

Objective: To explore the MRI findings of placental protusion sign in predicting postpartum hemorrhage in pa—tients with placenta previa.

Methods: Totally 35 4 placenta previa patients with whole clinical data underwent MR scaning 2weeks before operation.Association of postpartum hemorrhage and placental protusion sign was analyzed.

Results: Among354 patients with placental previa,the age of the pregnant women(#一4.34,P一0.04),gestational age at delivery(z2—5.19,P一0.02)and the number of cesarean sections(Z2=44.85,P<O.01)had associated with postpartum hemorrhage.Eight cases had placental protusion sign in MRI,while 6 cases occurred postpartum hemorrhage.The incidence of postpar—tum hemorrhage was 75.00%(6/8)and 12.72%(44/346)in patients with placenta accreta and with placental abruption。respectively(3[2—20.14,P<O.01).The sensitivity,specificity,odds ratio(95%confidence interval)and positive likeli—hood ratio of predicting postpartum hemorrhage was 12.00%(6/50),99.34%(302/304),20.59(4.03,105.23)and15.68,respectively.

Conclusion MRI placental protrusion sign has important clinical reference value in predicting postpar—tum hemorrhage.

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