title: The effects of subchorionic hematoma on pregnancy outcome in patients with threatened abortion.
abstract: OBJECTIVE
  To assess the effects of ultrasonographically detected subchorionic hematomas on pregnancy outcomes in patients with vaginal bleeding within the first half of pregnancy.
  
  
  METHODS
  Patients diagnosed with threatened abortion due to painless vaginal bleeding and who were followed up in an in-patient service during the first vaginal bleeding between January 2009 and December 2010 were included in this retrospective cohort study. Patients were divided into two groups according to the presence of subchorionic hematoma. Miscarriage rates and pregnancy outcomes of ongoing pregnancies were compared between the groups.
  
  
  RESULTS
  There were no statistically significant differences between the groups regarding demographic parameters, including age, parity, previous miscarriage history, and gestational age at first vaginal bleeding. While 13 of 44 pregnancies (29.5%) with subchorionic hematoma resulted in miscarriage, 25 of 198 pregnancies (12.6%) without subchorionic hematoma resulted in miscarriage (p=.010). The gestational age at miscarriage and the duration between first vaginal bleeding and miscarriage were similar between the groups. The outcome measures of ongoing pregnancies, such as gestational week at delivery, birth weight, and delivery route, were also similar between the groups.
  
  
  CONCLUSIONS
  Ultrasonographically detected subchorionic hematoma increases the risk of miscarriage in patients with vaginal bleeding and threatened abortion during the first 20 weeks of gestation. However, it does not affect the pregnancy outcome measures of ongoing pregnancies.
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Yavuz Emre
authors.initials: YE
authors.lastname: Şükür
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Göksu
authors.initials: G
authors.lastname: Göç
authors.affiliation: Department of Obstetrics and Gynaecology, Yenimahalle State Hospital, Ankara, Turkey.
authors.forename: Osman
authors.initials: O
authors.lastname: Köse
authors.affiliation: Department of Obstetrics and Gynaecology, Kayseri Education and Research Hospital, Kayseri, Turkey.
authors.forename: Gökhan
authors.initials: G
authors.lastname: Açmaz
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Batuhan
authors.initials: B
authors.lastname: Özmen
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Cem Somer
authors.initials: CS
authors.lastname: Atabekoğlu
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Acar
authors.initials: A
authors.lastname: Koç
authors.affiliation: Department of Obstetrics and Gynaecology, Ankara University Faculty of Medicine, Ankara, Turkey.
authors.forename: Feride
authors.initials: F
authors.lastname: Söylemez
keywords: Abortion; miscarriage; pregnancy outcome; spontaneous; threatened