Risk factors for blood transfusion during cesarean section in women with major placenta previa

Purpose The aim of this study was to evaluate risk factors for blood transfusion during cesarean section in women with major placenta previa. Methods A retrospective single-center cohort study was conducted, including 110 women treated in the tertiary-care Department of Obstetrics and Gynecology at Karlsruhe Municipal Hospital from January 2014 till December 2021 who underwent cesarean section due to major placenta previa as defined in the new classification. The patients were divided into two groups: those who received a blood transfusion and those who did not. The two groups were compared to identify potential risk factors for blood transfusion. Results No remarkable differences between the two groups relative to the need for blood transfusion were seen after an analysis of six risk factors — maternal age, gestational age at delivery, indication for cesarean section, antepartum bleeding, use of assisted reproductive technology, and a history of previous curettage. A patient history including a previous cesarean section was the only statistically significant risk factor for blood transfusion in patients with major placenta previa. Conclusion A medical history including a previous cesarean section was the only independent statistically significant risk factor for blood transfusion in women with major placenta previa. This should be taken into account when cesarean sections are carried out in women with major placenta previa.