Gravida indicates the total number of times a woman has been pregnant, regardless of whether these pregnancies were carried to term. A current pregnancy, if any, is included in this count. Para indicates the number of viable (>20 wks) births. Pregnancies consisting of multiples, such as twins or triplets, count as ONE birth for the purpose of this notation. Abortus is the number of pregnancies that were lost for any reason, including induced abortions or miscarriages. The abortus term is sometimes dropped when no pregnancies have been lost.
Therefore, the history of a woman who has had two pregnancies (both of which resulted in live births) would be noted as G2P2. A woman who had 4 pregnancies, one of which was miscarried, is noted as G4P3A1.