6Oppenheimer L, Society of Obstetricians and Gynaecologists ofCanada. Diagnosis and management of placenta previa. J ObstetGynaecol Can, 2007, 29:261-273.
7Royal College of Obstetricians and Gynaecologists. Placentapraevia, placenta preavia accrete and vasa praevia diagnosis andmanagement. Green-top Guideline No. 27. January 2011 [ EB/OL]. [ 2012-06-18] http://www.rcog.org.uk/womens_health/clinical-guidance/ placenta-praevia-and-placenta-praevia-accreta~diagnosis-and-manageme.
8Cho JY, Lee YH, Moon MH, et al. Difference in migration ofplacenta according to the location and type of placenta previa. JClin Ultrasound, 2008,36:79-84.
9Rao KP, Belogolovkin Y, Yankowitz J, et al. Abnormalplacentation: evidence-based diagnosis and management oiplacenta previa, placenta accreta, and vasa previa. ObstetGynecol Surv, 2012, 67:503-519.
10James KK, Steer PJ, Weiner CP, et al.高危妊娠.段涛,杨慧霞,译.3版.北京:人民卫生出版社,2008:1126.
1Liu S, Liston RM, Joseph KS, et al. Maternal mortality and severe morbidity associated with low-risk planned cesarean delivery versus planned vaginal delivery at term [ J ] . CMAJ, 2007, 176 ( 4 ) : 455-460.
2Raagab AE, Mesbah YH, Brakat RI, et al. Re-laparotomy after cesarean section : risk, indications and management options [ J ] . Med Arh, 2014, 68 ( 1 ) 41-43.
3Kessous R, Danor D, Weintraub YA, et al. Risk factors for relaparotomy after cesarean section [ J ] . J Matern Fetal Neonatal Med, 2012, 25 ( 11 ) : 2167-2170.
5Zelop CM. Postpartum hemorrhage : becoming more evidence-based [J ] . Obstet Gynecol, 2011, 117 ( 1 ) : 3-5.
6Ekin A, Gezer C, Solmaz U, et al. Predictors of severity in primary postpartum hemorrhage [ J ] . Arch Gynecol Obstet, 2015, 292 ( 6 ): 1247-1254.
7Sak ME, Turgut A, Evsen MS, et al. Relaparotomy after initial surgery in obstetric and gynecologic operations : analysis of 113 cases [ J ]. Ginekol Pol, 2012, 83 ( 6 ) : 429-432.
8Karthik S, Grayson AD, McCarron EE, et al. Reexploration for bleeding after coronary artery bypass surgery : risk factors, outcomes, and the effect of time delay [ J ]. Ann Thorac Surg, 2004, 78 ( 2 ) : 527-534.
9Lurie S, Sadan O, Golan A. Re-laparotomy after cesarean section[ J ]. Eur J Obstet Gynecol Reprod Biol, 2007, 134 ( 2 ) : 184-187.