Failed pregnancy is a pregnancy that will not carry through to term.
The term "non-viable" pregnancy is often used by radiologists when a pregnancy fails to progress, especially in the first trimester, but caution must be used with this term. In some situations, a "non-viable" fetus is defined as a fetus that has a <50% chance of surviving outside the womb and is reserved for a fetus less than ~24 weeks gestational age. In certain countries (such as the United States), this distinction may carry significant legal consequences 3. A first-trimester fetus without a heartbeat may more accurately be called a "failed pregnancy".
- 1. Levi CS, Lyons EA, Lindsay DJ. Early diagnosis of nonviable pregnancy with endovaginal US. Radiology. 1988;167 (2): 383-5. Radiology (abstract) - Pubmed citation
- 2. Pandya PP, Snijders RJ, Psara N et-al. The prevalence of non-viable pregnancy at 10-13 weeks of gestation. Ultrasound Obstet Gynecol. 1996;7 (3): 170-3. doi:10.1046/j.1469-0705.1996.07030170.x - Pubmed citation
- 3. Roe v. Wade, 410 U.S. 113, 160, 93 S.Ct. 705, 730 (1973).
First trimester of pregnancy
- ultrasound findings in early pregnancy
- confirming intrauterine gestation
- pregnancy of unknown location (PUL)
first trimester vaginal bleeding
- ectopic pregnancy
failed early pregnancy
- pregnancy of uncertain viability (PUV)
- anembryonic pregnancy
- yolk sac abnormalities
- gestational trophoblastic disease
- subchorionic haemorrhage
- demise of a twin
- implantation bleeding
- aneuploidy testing