title: [The incidence of abortions of viable pregnancies in the first trimester].
abstract: The spontaneous abortion rate in singleton pregnancies with sonographically proven heart activity between 5 and 13 weeks was analysed. Up to 15 weeks 8.6% of 395 patients miscarried. The abortion rate was higher in pregnancies with a gestational age < 9 weeks (12.5%), a maternal age > or = 35 years (15.5%) and vaginal bleeding (16.3%). The correlation of the abortion rate with these factors has to be taken into account when the prognosis of an individual gestation or the risk of invasive procedures is determined.
authors.affiliation: Universitäts-Frauenklinik Würzburg.
authors.forename: A
authors.initials: A
authors.lastname: Rempen
mesh_terms: D000022:Abortion, Spontaneous / Q000000981:diagnostic imaging / Q000453:epidemiology*; D000328:Adult; D005260:Female; D005328:Fetal Viability / Q000502:physiology*; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011446:Prospective Studies; D012307:Risk Factors; D016216:Ultrasonography, Prenatal
vernacular_title: Zur Aborthäufigkeit vitaler Schwangerschaften im ersten Trimenon.