gestational age assessment
Clinical evaluation to determine the duration of pregnancy using various dating methods and fetal measurements.
Full Definition
Gestational age assessment involves the systematic evaluation of pregnancy duration using multiple clinical tools including last menstrual period dating, ultrasound biometry, and physical examination findings. Accurate gestational age determination is crucial for timing of interventions, interpretation of screening tests, and delivery planning. First-trimester ultrasound provides the most accurate dating, while later assessments may use multiple parameters including fetal growth measurements and maternal history to establish or confirm gestational age.
Usage
Usage note: May be abbreviated as GA assessment; accuracy decreases with advancing pregnancy.
In Context
- "Gestational age assessment by ultrasound revealed a discrepancy of two weeks from LMP dating." — First trimester ultrasound report
- "The comprehensive gestational age assessment included crown-rump length measurement and maternal menstrual history." — Obstetric consultation note