Macrosomia is a condition in which a fetus is abnormally large. Babies with fetal macrosomia are born at a weight of at least 8 pounds, 13 ounces or more. The average birth weight for babies is about 7 pounds.
Most babies with macrosomia are born full-term, but some may be born pre-term. Babies born with macrosomia are more likely to experience low blood sugar, respiratory distress, and
. They are also at an increased risk of birth defects.
Macrosomia occurs in more than 10% of all pregnancies in the United States. Complications include a greater risk of
, damage to the birth canal, and damage to the fetus if delivered vaginally.
The most common cause of fetal macrosomia is
in the mother.
A risk factor is something that increases your chance of getting a disease or condition.
The following factors increase your chance of giving birth to a baby with macrosomia:
The references below are cited on the following website:
Zamorski MA, Biggs WS. Management of suspected fetal macrosomia. American Family Physician website. Available at:
Berard J, Dufour P, Vinatier D, Subtil D, Vanderstichele S, Monnier JC, et al. Fetal macrosomia: risk factors and outcome. A study of the outcome concerning 100 cases >4500 g.
Eur J Obstet Gynecol Reprod Biol
Gregory KD, Henry OA, Ramicone E, Chan LS, Platt LD. Maternal and infant complications in high and normal weight infants by method of delivery.
Irion O, Boulvain M. Induction of labour for suspected fetal macrosomia.
Cochrane Database Syst Rev
Langer O, Berkus MD, Huff RW, Samueloff A. Shoulder dystocia: should the fetus weighing greater than or equal to 4000 grams be delivered by cesarean section?
Am J Obstet Gynecol
Parks DG, Ziel HK. Macrosomia. A proposed indication for primary cesarean section.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a