Impact of Maternal Body Mass Index on Umbilical Artery Indices and Neonatal Outcome


Objectives: This study was designed to clarify the relationship between maternal body mass index (BMI) and umbilical artery (U.A) indices andto evaluate the effect of maternal BMI on the neonatal outcome. Study Design: This was a prospective cohort study. Patients and Methods: Thisstudy included 121 pregnant women with uncomplicated, singleton pregnancy between 18 and 35 years, at 32 weeks of gestation, seen inAl‑Yarmouk Teaching Hospital antenatal care. Women were divided according to the BMI into underweight (BMI <18.5), normal weight(BMI 18.5–24.9), overweight (BMI 25.0–29.9), and obese women (BMI ≥30). U.A velocity was recorded by Doppler ultrasound, and the women were followed till the time of delivery, mode of delivery, 5 min Apgar score, and birth weight were also recorded. Results: Obese women had significantly higher pulsatility index, resistance index, and systolic‑diastolic ratio compared to overweight and normal weightgroups (P < 0.001), cesarean section (C/S) rate was significantly higher (P < 0.001), and 5 min Apgar score was significantly lower (P < 0.001).Conclusion: The current study showed the negative impact of increasing BMI on fetoplacental circulation and increased risk of C/S. Neonatesof obese mothers had low 5 min Apgar score.