<prompt> Definition of Prolonged pregnancy isCompleted 38weeksCompleted 40weeksCompleted 41weeksCompleted 42weeks  <response>: The international definition of prolonged pregnancy, endorsed by the American College of Obstetricians and Gynecologists 2013a, is 42 completed weeks, 294 days or more from the first day of the last menstrual period.Reference: Williams Obstetrics; 24th edition; Chapter 43; Postterm Pregnancy 