Post-term newborns have a risk of macrosomia five times higher than that of term newborns (grade B), and macrosomia (including in newborns of mothers without diabetes) increases the
risk of hypoglycemia (grade B). Although their prevalence remains low (less than 1%), post-term newborns are at increased risk of obstetric injuries related to shoulder dystocia (grade B) and of bone
fractures (grade C). Finally, postmaturity is a risk factor for polycythemia (grade C), and the risk of neonatal sepsis increases by a factor of 1.3 in post-term newborns (grade B).