Term neonate. A neonate born any time ater 37 completed weeks of gestation and up until 42 completed weeks of gestation (260 to 294 days). The American College of Obstetricians and Gynecologists (2016b) and Society for MaternalFetal Medicine endorse and encourage specific gestational age designations. Eary term refers to neonates born at 37 completed weeks up to 386/7 weeks. Full term denotes those born at 39 completed weeks up to 406r weeks. Last, late term describes neonates born at 41 completed weeks up to weeks.
Preterm neonate. A neonate born before 37 completed weeks (the 259th day). A neonate born before 34 completed weeks is early preterm, whereas a neonate born between 34 and 36 completed weeks is late preterm.
Postterm neonate. A neonate born anytime after completion of the 42nd week, beginning with day 295.
Abortus. A fetus or embryo removed or expelled from the uterus during the first half of gestation-20 weeks or less, or in the absence of accurate dating criteria, born weighing <500 g.
Induced termination of pregnancy. The purposeful interruption of an intrauterine pregnancy that has the intention other than to produce a liveborn neonate and that does not result in a live birth. This deinition excludes retention of products of conception following fetal death.
Direct maternal death. he death of the mother that results from obstetrical complications of pregnancy, labor, or the puerperium and from interventions, omissions, incorrect treatment, or a chain of events resulting from any of these factors. An example is maternal death from exsanguination after uterine rupture.
Indirect maternal death. A maternal death that is not directly due to an obstetrical cause. Death results from previously existing disease or a disease developing during pregnancy, labor, or the puerperium that was aggravated by maternal physiological adaptation to pregnancy. An example is maternal death from complications of mitral valve stenosis.
Nonmaternal death. Death of the mother that results from accidental or incidental causes not related to pregnancy. An example is death from an automobile accident or concurrent malignancy.
Maternal mortality ratio. The number of maternal deaths that result from the reproductive process per 100,000 live births. Used more commonly, but less accurately, are the terms maternal mortaliy rate or maternal death rate. The term ratio is more accurate because it includes in the numerator the number of deaths regardless of pregnancy outcome-for example, live births, stillbirths, and ectopic pregnancieswhereas the denominator includes the number of live births.
Pregnancy-associated death. The death of a woman, from any cause, while pregnant or within 1 calendar year of termination of pregnancy, regardless of the duration and the site of pregnancy.
Pregnancy-related death. A pregnancy-associated death that results from: (1) complications of pregnancy itself, (2) the chain of events initiated by pregnancy that led to death, or (3) aggravation of an unrelated condition by the physiologicalior pharmacological efects of pregnancy and that subsequently caused death.