ABSTRACT

Stillbirth is the term preferred by parent groups and therefore has been increasingly used by the research community and by ACOG for fetal deaths ≥20 weeks of gestation or weight >350 g [3] and can be used as a synonym for fetal death. Fetal demise (often abbreviated IUFD or intrauterine fetal demise) is often also used interchangeably with fetal death. Unexplained fetal death is defined as death before delivery with no identifiable cause after complete evaluation is performed.