title: QT interval changes in term pregnant women living at moderately high altitude.
abstract: OBJECTIVE
  This study aimed to compare the QT interval changes in women with term pregnancy living at moderately high altitude (1890 m in Erzurum, Turkey) with those of women living at sea level (31 m in İstanbul, Turkey).
  
  
  METHODS
  One-hundred ten women (n = 55, for each group) with full-term and single child pregnancies. Two different locations in that state were selected: İstanbul, Turkey, which is at 31 m above sea level (Group 1) and Erzurum, Turkey, at 1890 m above sea level (Group 2). Physicians from the two locations participated in the study. We estimated QTc, QTc Max, QTc Min, QT, and QTcd intervals.
  
  
  RESULTS
  Moderately high altitude group had significantly longer QT parameters (QTc, QTc Max, QTc Min, QT, and QTcd intervals) compared with sea level group (P < 0.01, for all).
  
  
  CONCLUSIONS
  According to our results, QT interval changes occur in term pregnant women living moderately high altitude. These changes may be associated with pregnancy-related cardiovascular complications in moderately high altitude.
authors.affiliation: Department of Obstetric and Gynecology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: G
authors.initials: G
authors.lastname: Batmaz
authors.affiliation: Department of Obstetrics and Gynecology, Nenehatun Hospital, Erzurum, Turkey.
authors.forename: A N
authors.initials: AN
authors.lastname: Aksoy
authors.affiliation: Department of Obstetric and Gynecology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Aydın
authors.affiliation: Department of Cardiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: N K
authors.initials: NK
authors.lastname: Ay
authors.affiliation: Department of Obstetric and Gynecology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey.
authors.forename: B
authors.initials: B
authors.lastname: Dane
mesh_terms: D000328:Adult; D000531:Altitude; D004562:Electrocardiography / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D011247:Pregnancy; D014421:Turkey / Q000453:epidemiology