The 3 basic methods used to help estimate gestational age (GA) are menstrual history, clinical examination, and ultrasonography.The first 2 are subject to considerable error and should only be used when ultrasonography facilities are not available.In women who conceived following assisted reproduction techniques, the date of embryo transfer is known and may date the pregnancy accurately.
The date of the first documented positive pregnancy test and the beta-human chorionic gonadotropin (b HCG) level may help ascertain the minimum gestational age.For related information, see Medscape's Pregnancy Resource Center.Gestational age (GA) refers to the length of pregnancy after the first day of the last menstrual period (LMP) and is usually expressed in weeks and days. Conceptional age (CA) is the true fetal age and refers to the length of pregnancy from the time of conception. (KXAN Photo) " data-medium-file="https://lintvkxan.files.wordpress.com/2017/06/medical-supplies.jpg? w=300" data-large-file="https://lintvkxan.files.wordpress.com/2017/06/medical-supplies.jpg? Intrauterine growth restriction (IUGR) is a common diagnosis in obstetrics and carries an increased risk of perinatal mortality and morbidity.