title: Home diagnosis of obstructive sleep apnoea in coronary patients: validity of a simplified device automated analysis.
abstract: BACKGROUND
  Our aim was to evaluate a type 3 portable simplified device as a screening tool for obstructive sleep apnoea (OSA) in coronary patients.
  
  
  METHODS
  In 50 patients selected independently from sleep complaints, we compared the number of respiratory events per hour of valid recording time counted automatically by the device and the number counted manually per hour of sleep on polysomnography performed at home during the same night.
  
  
  RESULTS
  Five patients were excluded because of technical failures. Estimated OSA prevalences (95% confidence interval) for apnoea/hypopnoea index (AHI) cut-offs > or = 5, > or = 15, and > or = 30 by polysomnography were 0.93 (0.81-0.98), 0.69 (0.53-0.81), and 0.27 (0.15-0.42), respectively. The device would have correctly diagnosed 75% of patients with severe OSA (AHI > or = 30 by polysomnography) and would have classified the remaining 25% as having moderate OSA.
  
  
  CONCLUSIONS
  This ambulatory device may prove valuable in reducing the costs of diagnosing and managing OSA in coronary patients.
authors.affiliation: Service d'Explorations Fonctionnelles Multidisciplinaire, Hospital Ambroise Paré, Assistance Publique-Hôpitaux de Paris, Université de Versailles, Boulogne, France.
authors.forename: Carole
authors.initials: C
authors.lastname: Planès
authors.forename: Michel
authors.initials: M
authors.lastname: Leroy
authors.forename: Najette
authors.initials: N
authors.lastname: Bouach Khalil
authors.forename: Rami
authors.initials: R
authors.lastname: El Mahmoud
authors.forename: Franck
authors.initials: F
authors.lastname: Digne
authors.forename: Florence
authors.initials: F
authors.lastname: de Roquefeuil
authors.forename: Bernadette
authors.initials: B
authors.lastname: Raffestin
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000886:Anthropometry; D015992:Body Mass Index; D003327:Coronary Disease / Q000453:epidemiology*; D003937:Diagnosis, Differential; D004594:Electrophysiology / Q000295:instrumentation*; D005260:Female; D006699:Home Care Services; D006801:Humans; D008297:Male; D008875:Middle Aged; D017286:Polysomnography / Q000295:instrumentation*; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis* / Q000453:epidemiology*; D012913:Snoring / Q000175:diagnosis / Q000453:epidemiology; D011795:Surveys and Questionnaires