Tools What links here Special pages. Different gestational age groups can be distinguished, compared to the normal time period before giving birth: pre-term : less than 37 completed weeks less than days of gestation; term : From 37 completed weeks to less than 42 completed weeks to days of gestation; post-term : 42 completed weeks or more days or more of gestation. Categories : Glossary Health glossary. If the baby's gestational age findings after birth match the calendar age, the baby is said to be appropriate for gestational age AGA.
AGA babies have lower rates of problems and death than babies that are small or large for their gestational age. The weight for full-term infants that are born AGA will most often be between 2, grams about 5. Growth and nutrition. Siedel's Guide to Physical Examination. Louis, MO: Elsevier; chap 8. Fetal measurements: normal and abnormal fetal growth and assessment of fetal well-being. Diagnostic Ultrasound. Philadelphia, PA: Elsevier; chap Goyal NK.
The newborn infant. In: Kliegman RM, St. Gestational age is the number of weeks and days a fetus has developed since the beginning of the pregnancy, or gestation. A pregnancy is formally considered as beginning on the first day of the mother's last menstrual period LMP.
An infant born before 37 completed weeks' gestation is considered premature. A premature infant is often referred to in terms of gestational age a "weeker" , which implies a particular point of development at birth. After a premature infant is born, the gestational age is also referred to as the infant's post-conceptional age. This figure is useful for estimating an infant's growth and development until some time around the due date 40 weeks. Gestational age is also estimated by using ultrasound measurements of the fetus combined with the dates of first fetal heart tones and other developmental milestones.
After the infant is born, there are a variety of characteristics that can be used to estimate the gestational age.
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