title: Repeatability of sleep apnea detection in 48-hour holter ECG monitoring.
abstract: BACKGROUND
  There is a significant relationship between obstructive sleep apnea (OSA) and cardiovascular diseases. Reliability of new methods evaluating apnea in Holter ECG monitoring is still the matter of investigators' studies.
  
  
  METHODS
  In 48-hour Holter ECG monitoring recordings of 63 patients, we assessed repeatability, comparing the results from both sleep periods.
  
  
  RESULTS
  We found good repeatability in evaluation of apnea-hypopnea index value. There was moderate agreement in three categories, that is, normal or bordeline or apneic assignment. Assignment to "healthy" (normal and borderline) or apneic subgroup during consecutive sleep periods showed high repeatability.
  
  
  CONCLUSIONS
  Holter ECG monitoring is a repetitive method of preliminary diagnosis in patients evaluated for sleep apnea syndrome.
authors.affiliation: Department of Cardiology, Medical University of Łódź, Poland. tyhe@op.pl
authors.forename: Barbara
authors.initials: B
authors.lastname: Uznańska
authors.forename: Ewa
authors.initials: E
authors.lastname: Trzos
authors.forename: Tomasz
authors.initials: T
authors.lastname: Rechciński
authors.forename: Jarosław D
authors.initials: JD
authors.lastname: Kasprzak
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Kurpesa
mesh_terms: D015716:Electrocardiography, Ambulatory / Q000379:methods*; D006801:Humans; D015203:Reproducibility of Results; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis*