title: [Effects of myocardial ischemia on 24-hour QT interval variability].
abstract: OBJECTIVE
  To explore the significance of QT variability in myocardial ischemia.
  
  
  METHODS
  Twenty-four-hour QT interval variability in 37 patients with myocardial ischemia and 42 patients without myocardial ischemia were measured with 24-hour Holter recordings.
  
  
  RESULTS
  QT interval variability in patients with myocardial ischemia was larger than that in patients without myocardial ischemia.
  
  
  CONCLUSIONS
  Myocardial ischemia can influence QT interval variability.
authors.affiliation: Department of Cardiology, The Second Affiliated Hospital, Hunan Medical University, Changsha 410011.
authors.forename: X M
authors.initials: XM
authors.lastname: Xie
authors.forename: S P
authors.initials: SP
authors.lastname: Zhao
authors.forename: S F
authors.initials: SF
authors.lastname: Yu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000503:physiopathology*