Is Elevated First Trimester Mean Arterial Blood Pressure Associated With Increased Risk of Placenta Accreta?

Abstract

Purpose: The present study investigated whether first trimester mean arterial blood pressure (MAP) differed among pregnancies with placenta accreta and healthy pregnancies.Methods: We recruited 176 pregnant females totally from 1 January 2016 to 30 September 2018 in this study, as follows: 65 cases of placenta accreta and 111 cases of BMI and age matched, healthy pregnant controls. First trimester mean arterial blood pressure (MAP) were acquired from laboratory data files. Multiple logistic regression analysis were used to study analyzed the probable risk predictor of placenta accreta. Results: The performance of MAP was lower in healthy pregnancies. The MAP of the placenta accreta group was significantly higher than that of the cont rol group (p=0.001<0.05). Our results also showed that MAP was significantly positively associated with placenta accreta after adjusting for age, BMI, fertilization type, gestational week at time of blood pressure measurement, and previous cesarean section history (odds ratio [β]: 1.11; 95% confidence interval [CI]: 1.04–1.69; p=0.0013<0.05). In addition, smoking during pregnancy (β: 7.57; 95% CI: 1.41–40.72; p=0.018<0.05) and previous cesarean section history (β: 2.57; 95% CI: 1.19–5.54; p=0.016<0.05) were significantly positively associated with placenta accreta.Conclusions: Increased first trimester MAP was significantly positively associated with placenta accreta, suggesting the potential role of MAP in identifying high-risk pregnancies for placenta accreta. Smoking during pregnancy and previous cesarean section history may be risk factors for placenta accreta.