Post-term pregnancy or prolonged pregnancy is defined as pregnancy which progresses beyond 42 weeks.1 Post-term pregnancy is associated with fetal, neonatal and maternal complications. Risks increase after term and significantly so after 41 weeks of pregnancy. A policy of induction of labour appears to improve outcomes and reduce perinatal mortality.2 Where possible, first trimester ultrasound rather than last menstrual period (LMP) dating should be relied on to assess pregnancy duration. This should be determined using crown-rump measurement or head circumference if crown-rump length is above 84 mm.3
This is a companion discussion topic for the original article at https://patient.info/doctor/obstetrics/post-term-pregnancy-prolonged-pregnancy