What does "parity" refer to when noted on patient documentation?

Parity refers specifically to the number of pregnancies that have reached a viable gestational age, which is typically defined as 20 weeks or more. This term is important in obstetrics as it distinguishes between total pregnancies and those that have advanced to a stage where the fetus has a potential for survival outside the womb. It reflects a woman's reproductive history and can influence prenatal care and risk assessment for future pregnancies.

In clinical documentation, understanding parity helps healthcare providers to evaluate a patient’s obstetric history and make informed decisions regarding management and care during pregnancy. This definition plays a significant role in assessing reproductive health and outcomes.