title: [Value of retrospective assessment of the Epworth Sleepiness Scale after long-term CPAP therapy in obstructive sleep apnea disorder]].
abstract: BACKGROUND
  Daytime-sleepiness is the main symptom of the obstructive sleep apnoea syndrome. Standarized questionnaires (e.g. the Epworth sleepiness scale = ESS) have become useful diagnostic tools. In this study we investigated wether there is a difference between the estimation of initial "pre-treatment" daytime sleepiness (by ESS) compared to the retrospective ESS score after implementation of CPAP therapy.
  
  
  METHODS
  We included 46 patients (RDI 39/h +/- 20.2, CPAP pressure 8 cm/H2O +/- 1.7, daily use of 5.8 h +/- 1.8, RDI with CPAP 7.6/h +/- 5.3). We examined the ESS score before CPAP-therapy (ESS-base) in comparison to the retrospective estimation of the initial conditions after one year of CPAP-therapy (ESS-retro).
  
  
  RESULTS
  There was no statistical significant difference between ESS base (11.7 +/- 4.6) and ESS-retro (12.7 +/- 5.2). ESS decreased to 5.4 +/- 3.7 by CPAP-therapy (p < 0.01).
  
  
  CONCLUSIONS
  From a chronological point of view ESS is a consistent parameter of daytime sleepiness. Hence, the retrospective estimation of pre-CPAP ESS can be considered as a useful diagnostic tool.
authors.affiliation: Krankenhaus Kloster Grafschaft, Zentrum für Pneumologie, Allergologie, Schlaf- und Beatmungsmedizin, Schmallenberg Grafschaft.
authors.forename: C
authors.initials: C
authors.lastname: Zimmermann
authors.forename: D
authors.initials: D
authors.lastname: Köhler
authors.forename: B
authors.initials: B
authors.lastname: Schönhofer
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008134:Long-Term Care; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data*; D011175:Positive-Pressure Respiration; D015203:Reproducibility of Results; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis / Q000628:therapy*; D011795:Surveys and Questionnaires
vernacular_title: Wertigkeit der retrospektiven Einschätzung der Epworth-Schläfrigkeitsskala nach länger dauernder CPAP-Therapie bei obstruktiver, schlafbezogener Atmungsstörung.