The nightmare of obstetricians - the placenta accreta spectrum in primiparous pregnant women.

Objectives: The incidence of PAS is increasing day by day as a life-threatening condition. The purpose of the present study was to determine the factors affecting PAS formation in primiparous pregnant women and to define possible risk factors for the mother and the baby.

Material and methods: Bursa Yüksek İhtisas Training and Research Hospital, department of obstetrics and gynecology, Bursa, Turkey, between June 2016 and December 2020. A total of 58,895 patients were included in the study. After the exclusion criteria, the study was continued with 27 primiparous PAS and 54 non-primiparous PAS patients. The primary purpose is to evaluate PAS risk factors. The secondary aim is to examine maternal and neonatal characteristics.

Results: When the parameters that are significant in terms of PAS risk factors were analyzed by Logistic Regression Analysis, it was found that the increase in age also increased the development of PAS 1.552 times (95% CI: 1.236-1.948) and a history of abortion was 7.928. times (95% CI: 1.408-44.654) and 11,007 times (95% CI: 2.059-58.832) with history of myomectomy; postoperative HB values (p < 0.001), an estimated amount of bleeding (p < 0.001), need for transfusion (p = 0.002), and use of drains ( < 0.001) were statistically significant different between two groups. When the neonatal results between patients with and without PAS were examined, birth weight (p < 0.001) and gestational week ( < 0.001) were statistically significant.

Conclusions: PAS does not occur only in multiparous patients who have a history of previous cesarean section. It may also occur in primiparous patients and is a life-threatening condition.