Analysis of Relationship Between MRI Signs and Postpartum Hemorrhage in Pregnant Women with Pernicious Placenta Previa
Objective:To investigate the analysis of relationship magnetic resonance imaging(MRI)signs and postpartum hemorrhage in pregnant women with pernicious placenta previa(PPP).Method:A retrospective analysis was performed on clinical data of 76 PPP pregnant women admitted to Maternity and Child Care Center of Xinyu from January 2018 to August 2023,according to whether postpartum hemorrhage occurred,they were divided into postpartum hemorrhage group(n=42)and non-postpartum hemorrhage group(n=34).The MRI signs and correlation with postpartum hemorrhage were compared between the two groups.Result:The proportion of placenta implantation in the postpartum hemorrhage group was higher than that in the non-postpartum hemorrhage group,and the number of cesarean section was more than that in the non-postpartum hemorrhage group(P<0.05).The proportion of uterine local swelling,uneven placental signal,abnormal blood vessels in the placenta,and T2WI low signal band in MRI signs on the postpartum hemorrhage group were higher than those in the non-postpartum hemorrhage group,the placental thickness in the lower uterine segment were greater than those in the non-postpartum hemorrhage group,the differences were statistically significant(P<0.05).There were no significant differences in the proportion of cervical dilation and cervical length between the two groups(P>0.05).Receiver operating characteristic(ROC)curve analysis showed that the areas under the curve of uterine local swelling,uneven placental signal,abnormal blood vessels in placenta,T2WI low signal band and placenta thickness in lower uterine segment in MRI signs of PPP pregnant women in predicting postpartum hemorrhage were 0.716,0.695,0.740,0.761 and 0.931,respectively;sensitivity were 78.6%,71.4%,83.3%,78.6%,76.2%,respectively;and specificity were 64.7%,67.6%,64.7%,73.5%,91.2%,respectively.Conclusion:The MRI signs of pregnant women with PPP are associated with uterine localized swelling,uneven placenta signal,abnormal blood vessels in the placenta,low signal band on T2WI,and placenta thickness in the lower part of the uterus,and the MRI signs detection is helpful to improve the diagnostic efficiency of postpartum hemorrhage.
万方数据
维普
