Dictionary Meaning and Definition on 'Puerperium'
n : time period following childbirth when the mother's uterus
shrinks and the other functional and anatomic changes of
pregnancy are resolved; "a perinatologist cared for her
during the puerperium"
Wikipedia Meaning and Definition on 'Puerperium'
Postnatal (Latin for 'after birth', from post meaning "after" and natalis meaning "of birth") is the period beginning immediately after the birth of a child and extending for about six weeks. Another term would be postpartum period, as it refers to the mother (whereas postnatal refers to the infant). Less frequently used is puerperium.
Biologically, it is the time after birth, a time in which the mother's body, including hormone levels and uterus size, returns to prepregnancy conditions. Lochia is post-partum vaginal discharge, containing blood, mucus, and placental tissue.
In scientific literature the term is commonly abbreviated to PX. So that 'day P5' should be read as 'the fifth day after birth'. This is not to be confused with medical nomenclature which uses G P to stand for number of pregnancy and outcome of pregnancy.[See more about Puerperium at Dictionary 3.0 Encyclopedia]