The determination of gestation age based on weekly increments is a fundamental aspect of prenatal care. This calculation often commences from the first day of the woman’s last menstrual period (LMP). For example, if the LMP began on January 1st, and the current date is January 29th, the gestation age would be calculated as approximately four weeks.
Accurate gestational age assessment offers significant benefits, including establishing an estimated due date, monitoring fetal development milestones, and identifying potential risks associated with premature or post-term delivery. Historically, methods have evolved from relying solely on the LMP to incorporating ultrasound measurements, especially in early pregnancy, to refine accuracy.
