Pregnancy, Prolonged

**Definition:** A term used to describe pregnancies that exceed the upper limit of a normal gestational period. In humans, a prolonged pregnancy is defined as one that extends beyond 42 weeks (294 days) after the first day of the last menstrual period (MENSTRUATION), or birth with gestational age of 41 weeks or more.

**Tree numbers:** - C12.050.703.805

**Synonyms:** - Prolonged Pregnancy