TY - JOUR
T1 - Placenta previa with early opening of the uterine isthmus is associated with high risk of bleeding during pregnancy, and massive haemorrhage during caesarean delivery
AU - Goto, M.
AU - Hasegawa, J.
AU - Arakaki, T.
AU - Takita, H.
AU - Oba, T.
AU - Nakamura, M.
AU - Sekizawa, A.
N1 - Publisher Copyright:
© 2016 Elsevier Ireland Ltd. All rights reserved.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Objective To demonstrate the relationship between the timing of opening of the uterine isthmus and bleeding during pregnancy and caesarean section in patients with placenta previa. Methods A prospective observational study was conducted at a single perinatal centre. All patients with placenta previa, diagnosed between 20 and 22 weeks of gestation, who were followed up at the study hospital and underwent caesarean section were enrolled. The condition of the uterine isthmus was examined every 2 weeks. The timing (in gestational weeks) of complete opening of the uterine isthmus was determined. Patients were divided into two groups: patients in whom the uterine isthmus opened before 25 weeks of gestation (EO-previa), and patients in whom the uterine isthmus opened after 25 weeks of gestation (LO-previa). The frequency of bleeding during pregnancy and the amount of intra-operative bleeding were compared between the two groups. Results Forty-four cases of EO-previa and 55 cases of LO-previa were analysed. Complete placenta previa at delivery was observed more frequently in the EO-previa group than in the LO-previa group (88.6% vs 47.3%, p < 0.001). An emergency caesarean section due to active bleeding was performed more frequently in the EO-previa group (48%) than in the LO-previa group (25%) (p = 0.021). The frequency of massive haemorrage (>2500 ml) during caesarean section was higher in the EO-previa group than in the LO-previa group (25% vs 9%, p = 0.033). Conclusion Placenta previa was associated with a high risk of bleeding leading to emergency caesarean section during pregnancy, and massive haemorrhage during caesarean section in patients in whom the uterine isthmus opened before 25 weeks of gestation.
AB - Objective To demonstrate the relationship between the timing of opening of the uterine isthmus and bleeding during pregnancy and caesarean section in patients with placenta previa. Methods A prospective observational study was conducted at a single perinatal centre. All patients with placenta previa, diagnosed between 20 and 22 weeks of gestation, who were followed up at the study hospital and underwent caesarean section were enrolled. The condition of the uterine isthmus was examined every 2 weeks. The timing (in gestational weeks) of complete opening of the uterine isthmus was determined. Patients were divided into two groups: patients in whom the uterine isthmus opened before 25 weeks of gestation (EO-previa), and patients in whom the uterine isthmus opened after 25 weeks of gestation (LO-previa). The frequency of bleeding during pregnancy and the amount of intra-operative bleeding were compared between the two groups. Results Forty-four cases of EO-previa and 55 cases of LO-previa were analysed. Complete placenta previa at delivery was observed more frequently in the EO-previa group than in the LO-previa group (88.6% vs 47.3%, p < 0.001). An emergency caesarean section due to active bleeding was performed more frequently in the EO-previa group (48%) than in the LO-previa group (25%) (p = 0.021). The frequency of massive haemorrage (>2500 ml) during caesarean section was higher in the EO-previa group than in the LO-previa group (25% vs 9%, p = 0.033). Conclusion Placenta previa was associated with a high risk of bleeding leading to emergency caesarean section during pregnancy, and massive haemorrhage during caesarean section in patients in whom the uterine isthmus opened before 25 weeks of gestation.
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U2 - 10.1016/j.ejogrb.2016.03.012
DO - 10.1016/j.ejogrb.2016.03.012
M3 - Article
C2 - 27039247
AN - SCOPUS:84962438972
SN - 0301-2115
VL - 201
SP - 7
EP - 11
JO - European Journal of Obstetrics and Gynecology and Reproductive Biology
JF - European Journal of Obstetrics and Gynecology and Reproductive Biology
ER -