Foetal macrosomia

Clinical palpation, ultrasound biometry and maternal perception can all lead to the suspicion of a large for gestational age foetus and foetal macrosomia. Although maternal diabetes and rare genetic syndromes may be the cause of large foetal size, most of these pregnancies will in fact be normal. Nevertheless, maternal and perinatal risks do increase with increasing foetal size. Antenatal prediction, however, is imprecise and the evidence to date does not support intervention in non-diabetic pregnancies where there is a suspicion of foetal macrosomia.