Impact of Maternal BMI, Blood group and Hemoglobin Genotype on Pregnancy Outcome

Anthropometric and Hematological parameters play a crucial role in assessing health risks, guiding interventions, and evaluating nutritional status. Additionally, negative pregnancy outcomes can have profound effects on both parents and neonates that may require short- or long-term medical intervention. This study investigates the relationship between maternal (Body Mass Index) BMI, blood group, genotype and pregnancy outcomes among parous women.

This retrospective study utilized antenatal and postnatal data from 2018 to 2024, involving 270 parous women aged 18 and above with singleton pregnancies and no pre-existing health conditions. It focused on anthropometric and hematological parameters, including height, weight, blood group, genotype, and BMI. Descriptive and inferential statistical methods (correlation, regression, stratified analysis) were used to assess relationships among variables using SPSS.

Maternal weight positively correlated with neonatal birth weight (r = 0.151, p = 0.013), while BMI showed a moderate negative correlation with height (r = –0.494, p < 0.001). Caesarean section (CS) mothers had significantly higher BMI (29.62) than those with spontaneous delivery (25.14) (p < 0.001), suggesting a strong BMI-CS link. Blood group showed a small but significant association with delivery mode, whereas genotype did not significantly predict delivery outcomes.

Maternal anthropometric parameters especially BMI and maternal weight play important roles in predicting pregnancy outcomes among parous women. However, blood group and genotype, did not exhibit significant relationships with pregnancy outcomes.

Keywords: Pregnancy outcomes, Maternal BMI, Blood group, Hemoglobin genotype.