title: Comparison of sleep parameters at titration and subsequent compliance between CPAP-pretreated and non-CPAP-pretreated patients with obstructive sleep apnea.
abstract: OBJECTIVE
  Obstructive sleep apnea-hypopnea syndrome (OSAHS) patients undergo continuous positive airway pressure (CPAP) treatment for the first time on titration night, and then the effect of overnight CPAP treatment is estimated immediately. The purpose of this study is to compare the effects of CPAP-pretreated and non-pretreated on patients with OSAHS.
  
  
  METHODS
  Prospective randomized, controlled parallel study was performed. Seventy patients with OSAHS received autoadjusted CPAP treatment for 2 months and then received the standard manual titration (CPAP-pretreated group). The other 70 did not receive any CPAP treatment before receiving the standard manual titration (non-CPAP-pretreated group).
  
  
  RESULTS
  The CPAP-pretreated group had significantly improved sleep efficiency and arousal index in non-rapid eye movement (NREM) sleep compared with the initial CPAP group at titration, whereas there were no significant differences between the two groups in other sleep parameters. Eight patients in the non-CPAP-pretreated group discontinued CPAP treatment 9 months after the titration, whereas one patient in the CPAP-pretreated group discontinued treatment.
  
  
  CONCLUSIONS
  A preceding CPAP treatment showed minimal effects on sleep parameters on titration night and subsequent CPAP compliance rate, although it was speculated that this preceding treatment might be of benefit for better compliance in some patients.
authors.affiliation: Department of Otolaryngology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, 173-8605 Tokyo, Japan. suzukima@med.teikyo-u.ac.jp
authors.forename: Masaaki
authors.initials: M
authors.lastname: Suzuki
authors.forename: Hanako
authors.initials: H
authors.lastname: Saigusa
authors.forename: Taiji
authors.initials: T
authors.lastname: Furukawa
mesh_terms: D001143:Arousal; D045422:Continuous Positive Airway Pressure / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010349:Patient Compliance / Q000706:statistics & numerical data; D017286:Polysomnography; D011446:Prospective Studies; D020181:Sleep Apnea, Obstructive / Q000453:epidemiology / Q000628:therapy*; D012894:Sleep Stages; D012895:Sleep, REM