MRI征象预测胎盘植入谱系疾病评分表的临床价值

Clinical value of MRI-based scoring system in predicting placenta accreta spectrum disorders

目的探讨MRI征象预测胎盘植入谱系疾病评分表的临床价值。材料与方法回顾性分析我院收治的102名怀疑胎盘种植异常的孕妇资料。选取MRI征象及临床危险因素共9项内容制订MRI征象预测胎盘植入谱系疾病评分表并进行评分,计算各型胎盘植入的平均总得分。采用单因素方差分析,最小显著性差异法进行组间比较,绘制ROC曲线计算各型胎盘植入的评分界值。结果102例孕妇中,非植入性35例,总分(2.94±1.28)分;粘连性28例,总分(5.54±1.75)分;植入性32例,总分(9.88±2.37)分;穿透性7例,总分(13.57±1.90)分。各组间评分比较,差异有统计学意义(F=115.688,P<0.05)。ROC曲线显示,非植入性与粘连性胎盘植入间、粘连性胎盘植入与植入性胎盘植入间及植入性胎盘植入与穿透性胎盘植入间评分的平均界值分别为3.5分、7.5分及10.5分。结论MRI征象评分表对胎盘植入谱系疾病及胎盘植入深度有较好的预测价值。

Objective:To investigate the clinical value of MRI-based scoring system in predicting placenta accreta spectrum disorders.Materials and Methods:The data of 102 pregnant women suspected of placenta accreta spectrum disorders in our hospital were analyzed retrospectively.Nine items including MRI signs and clinical risk factors were selected to develop the MRI-based scoring system in predicting placenta accreta spectrum.Calculate average total score of each type of placenta implantation.The variance analysis and least-significant difference were used for comparison among groups and the ROC curve was drawn to calculate the cut-off score of each type of placenta implantation.Results:Among 102 pregnant women,there were 35 cases of non-implantation type,score was(2.94±1.28),28 cases of placenta accreta type,score was(5.54±1.75),32 cases of placenta increta type,score was(9.88±2.37),and 7 cases of placenta percreta type,score was(13.57±1.90).There was statistically significant difference in scores among all groups(F=115.688,P<0.05).The ROC curve showed that the cut-off score between non-implantation and placenta accreta,between placenta accreta and placenta increta,and between placenta increta and placenta percreta were 3.5,7.5,and 10.5,respectively.Conclusions:MRI-based scoring system has a good value in predicting placenta accreta spectum disorders and depth of placenta imlantation.