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Table 6 Risk factors associated with massive blood loss in pregnant women complicated with placenta previa and prior cesarean

From: Prediction of cesarean hysterectomy in placenta previa complicated with prior cesarean: a retrospective study

 > = 1000 mL< 1000 mLP ValueAdjusted OR (95%CI)Adjusted P value
N48171   
Age (Years)34.10 ± 4.0033.78 ± 4.200.638  
Gestational age (Days)249.8 ± 22.9247.8 ± 36.90.726  
Time since last surgery (Months)58.1 ± 33.366.1 ± 37.80.188  
Gestational diabetes mellitus (%)11(22.9)30(17.5)0.407  
Hypertensive disorder (%)07(4.1)0.352  
Prior Cesarean > = 2 times (%)10(20.8)9(5.3)0.002  
Prior curettage (%)29(60.4)78(45.6)0.075  
Bleeding prior to delivery (%)19(39.6)48(28.1)0.156  
Pregravid BMI (kg/m2)22.20 ± 2.7021.80 ± 2.860.403  
Prepartum BMI (kg/m2)26.42 ± 3.1326.24 ± 2.920.711  
Last Hb before delivery (g/L)106.60 ± 13.17114.61 ± 15.130.001  
Vascular lacunae24(50.0)9(5.3)< 0.001  
Loss of normal hypoechoic retroplacental zone29(60.4)2(1.2)< 0.001115.933 (11.913,1128.228)< 0.001
Retroplacental myometrial thinness6(12.5)3(1.8)0.004  
Placental thickness19(39.6)1(0.6)< 0.00177.542 (4.394,1368.455)0.003
Central Placenta previa36(75.0)42(24.6)< 0.0013.563 (1.287,9.861)< 0.001
Anterior Placenta position39(81.3)88(54.0)0.001  
  1. Input parameters in logistic regression were: Prior Cesarean > = 2 times, Last Hb before delivery, vascular lacunae, loss of normal hypoechoic retroplacental zone, placental thickness, central placenta previa, anterior placenta position