Evaluation of Postpartum Abdominal Diastasis in Vaginal Births vs. Cesarean Sections Using Ultrasound
Author Block: M. M. Silva1, A. F. C. L. Abrantes2, L. P. V. Ribeiro3, S. I. Rodrigues1, R. P. P. Almeida4, R. Van Hauwaert4, A. Onofre de Carvalho1, R. Lopes5, S. Tavares5; 1Faro/PT, 2Évora/PT, 3Lagoa/PT, 4São Brás de Alportel/PT, 5Lisboa/PT
Purpose: This study aims to assess the prevalence of rectus abdominis diastasis in nulliparous postpartum women, identifying associated factors and differences between vaginal delivery and cesarean section, reinforcing the role of ultrasound as a diagnostic and monitoring
method.
Methods or Background: A quantitative descriptive correlational design, was applied to a convenience sample of 50 women (25 vaginal, 25 cesarean), aged 18–40 years, with 37–42 weeks of gestation. Diastasis was assessed by ultrasound at three standardized points: ½ supraumbilical (>1.5
cm), ¼ supraumbilical (>2.6 cm), and ½ infraumbilical (>1.8 cm). Total diastasis was defined when all three points were positive, and classified as severe if any exceeded 2.5 cm.
Results or Findings: No statistically significant associations were observed between the type of delivery or the percentile of the newborn and abdominal diastasis, although a moderate negative correlation was observed between higher percentiles and diastasis in the supraumbilical
region in eutocic deliveries (rs=-0.45, p=0.02). Pre-delivery body mass index (BMI) was found to be a significant variable, showing a moderate negative correlation with supraumbilical diastasis (rs=-0.390, p=0.01), especially in eutocic deliveries. Pre-pregnancy
physical activity did not show significant influence. Diastasis prevalence was highest in supra- and infraumbilical regions, with lower incidence at the umbilicus.
Conclusion: Postpartum abdominal diastasis was common, especially supra- and infraumbilically. Pre-pregnancy BMI emerged as the main factor influencing its extent, while delivery type, neonatal percentile, and exercise showed limited impact. These findings highlight theimportance of standardized ultrasound protocols for early detection, follow-up, and guidance of preventive and therapeutic strategies in abdominal wall recovery after childbirth.
Limitations: The sample size.
Funding for this study: I did not receive any funding for this research.
Has your study been approved by an ethics committee? Yes
Ethics committee - additional information: In accordance with ethical standards, this study obtained ensured privacy, and received approval from the institutional ethics committee (CEUAlg Pn° 90 /2024).