What does the medical abbreviation G1P1A0 mean?

Gravida 1, Para 1, Abortion 0

Gravida refers to the number of times a woman has been pregnant, regardless of whether the pregnancy resulted in a live birth, miscarriage, or abortion.

Para refers to the number of times a woman has given birth to a viable infant, meaning a baby that was born alive and survived for at least 24 hours.

Abortion refers to the number of times a woman has had an abortion, which is the termination of a pregnancy before the fetus is viable.

In the case of G1P1A0, it means that the woman has been pregnant once, has given birth to one viable infant, and has not had any abortions.