The factors effective on the macrosomic deliveries of non-diabetic pregnant women

Objective: The aim of our study was to analyze the characteristics of maternal and fetal variables in babies born 4000 g and above. Methods: A study group was created with 572 pregnant women who delivered babies 4000 g and above between 37 and 42 weeks of gesta- tion, and a control group was created with 614 pregnant women who delivered babies between 2500 and 4000 g at the same weeks of gesta- tion, all who delivered at our hospital between January 2009 and April 2012. In the study, maternal age, gravida, parity, week of gestation, body mass index, maternal height, weight gained during pregnancy, hemoglobin A1c (HbA1c) levels, presence of polyhydramnios, macro- somia history at previous pregnancies and fetal sex were evaluated. Results: When the pregnant women delivered babies 4000 g and above and the pregnant women delivered babies below 4000 g were compared and maternal age being higher than 35 years (p=0.02), mean parity (p=0.03), week of gestation (p=0.01), mean maternal height (p<0.001), maternal HbA1c levels (p<0.001), polyhydramnios (p<0.001) and history of delivering baby with macrosomia (p<0.001) were found significantly higher in the study group (birth weight higher than 4000 g). There was no significant difference between the groups in terms of gravida, body mass index and weight gained dur- ing pregnancy. Conclusion: Pregnancy at over 35 years old, parity, mean maternal height being high, weight gained during pregnancy being over 12 kg, high HbA1c, presence of polyhydramnios during current preg- nancy and the history of delivering baby with macrosomia increase the risk of macrosomia in fetus.