gestational age

Formal Definition

Duration of pregnancy from the last menstrual period. In this guide, duration of pregnancy (gestational age) is expressed in 3 different ways: First trimester < 16 weeks, Second trimester 16-28 weeks, Third trimester 29-40+ weeks

WHO Pregnancy, Childbirth, Postpartum and Newborn Care guide 2015
  • Abbreviation(s): Trimester
  • Categories: Maternity