title: Fetal loss rate after ultrasonically documented cardiac activity between 6 and 14 weeks, menstrual age.
abstract: The pregnancy outcome of 347 patients with a confirmed, viable intrauterine pregnancy between 6.0 and 14.0 weeks, menstrual age, was determined. The miscarriage rate was 4.2% in a subgroup of patients without vaginal bleeding, as compared with 12.7% in a subgroup with bleeding (chi 2 = 7.4, p less than 0.006). First trimester vaginal bleeding was a significant covariate in the determination of the spontaneous miscarriage rate after fetal cardiac activity has been confirmed.
authors.affiliation: Department of Obstetrics and Gynecology, Magee-Womens Hospital, University of Pittsburgh, School of Medicine, Pennsylvania 15213.
authors.forename: L M
authors.initials: LM
authors.lastname: Hill
authors.forename: D
authors.initials: D
authors.lastname: Guzick
authors.forename: J
authors.initials: J
authors.lastname: Fries
authors.forename: J
authors.initials: J
authors.lastname: Hixson
mesh_terms: D000022:Abortion, Spontaneous; D000293:Adolescent; D000328:Adult; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular; D011446:Prospective Studies; D016216:Ultrasonography, Prenatal; D014592:Uterine Hemorrhage / Q000150:complications