title: [Vaginal sonography in the diagnosis of early pregnancy].
abstract: In this study is reported on 401 transvaginal sonographic examinations in first trimenon of pregnancy. There were interpreted biometrical and functional findings. With 5 weeks p.m., chorion cavity can be identified by a transvaginal scan probe reaching a diameter of 3-8 mm. The vital embryo is recognized by its cardiac action with a embryonic length of 3 mm at the end of 6 weeks post menstruation. Thus with transvaginal sonography, details of embryonic development in the first trimester are visible 1-2 weeks earlier than with abdominal ultrasound examination. It is possible to estimate embryonic and trophoblastic structures of early gestation and to recognize non-viable early pregnancies.
authors.affiliation: Klinik und Poliklinik für Gynäkologie und Geburtshilfe, Humboldt-Universität zu Berlin.
authors.forename: P
authors.initials: P
authors.lastname: Sydow
authors.forename: K
authors.initials: K
authors.lastname: Lisse
authors.forename: T
authors.initials: T
authors.lastname: Wilken
authors.forename: B
authors.initials: B
authors.lastname: Pfüller
mesh_terms: D005314:Embryonic and Fetal Development; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D014463:Ultrasonography / Q000379:methods*; D014621:Vagina
vernacular_title: Vaginosonographie zur Diagnostik der frühen Schwangerschaft.