Gynaecology & Obstetrics Medical & Surgical Illness Complication Pregnancy fb955202 Macrosomia is a result of: A Maternal hyperglycemia B Fetal hyperglycemia C Fetal hyperinsulinemia D Maternal hyperinsulinemia High-Yield Explanation Ans. is a, i.e. Maternal hyperglycemiaRef. High Risk pregnancy, Fernando Arias 4//e, p 259The basic cause of macrosomia is maternal hyperglycemia.