The normal duration of pregnancy is 37 to 42 weeks, which is referred to as "term." A postterm pregnancy, also called a prolonged pregnancy, is one that has extended beyond 42 weeks or 294 days from the first day of the LMP.

What is the cause of post-term pregnancy?

What causes post-term pregnancy? It is not known why some women carry a pregnancy longer than others. It is often due to a miscalculation of pregnancy conception dates. A woman is much more likely to have a post-term pregnancy if previous pregnancies went beyond 42 weeks.

What is the difference between post dates pregnancy and post-term pregnancy?

Postterm pregnancy includes pregnancies that last longer than 42 weeks. Postdate pregnancies last longer than the established or estimated date of confinement, also known as the due date in layman's terms(ie, 40 weeks). This chapter will address management of postdate pregnancies.