title: Effect of heated humidification on compliance and quality of life in patients with sleep apnea using nasal continuous positive airway pressure.
abstract: OBJECTIVE
  To determine whether the addition of heated humidification at treatment initiation with nasal continuous positive airway pressure (CPAP) would lead to better CPAP compliance and improve quality of life and subjective sleepiness in patients with sleep apnea.
  
  
  METHODS
  Randomized controlled trial.
  
  
  METHODS
  An academic sleep center located at a Veterans Affairs hospital.
  
  
  METHODS
  Ninety-eight patients with obstructive sleep apnea who had not received nasal CPAP previously.
  
  
  RESULTS
  Patients received heated humidification at CPAP initiation in the treatment group. In the control group, patients could receive heated humidification only if they had upper airway symptoms that could not be treated successfully with simpler measures. Patients were followed up at 1 month, 3 months, and 12 months. Outcome measures were compliance with nasal CPAP (mean hours per night at effective pressure), quality of life as measured by the Calgary sleep apnea quality of life index, subjective sleepiness measured with the Epworth sleepiness scale, and CPAP side effects. There was no difference in CPAP compliance between groups. Quality of life and subjective sleepiness improved in both groups with nasal CPAP therapy, but there was no difference in the extent of improvement between groups. The overall CPAP side effect score was similar in both groups, but individual symptoms of dry nose and dry mouth and throat were significantly lower in the heated humidification group.
  
  
  CONCLUSIONS
  The addition of heated humidification when nasal CPAP was instituted did not lead to better compliance, greater improvement in sleepiness, or improved quality of life, but was associated with fewer symptoms attributable to the upper airway.
authors.affiliation: Division of Pulmonary, Critical Care & Sleep Medicine, Section 111S, State University of New York at Buffalo, Veterans Administration Medical Center, Veterans Affairs Western New York Healthcare System, Buffalo, NY 14215, USA. mador@acsu.buffalo.edu
authors.forename: M Jeffery
authors.initials: MJ
authors.lastname: Mador
authors.forename: Matthew
authors.initials: M
authors.lastname: Krauza
authors.forename: Adnan
authors.initials: A
authors.lastname: Pervez
authors.forename: Dawn
authors.initials: D
authors.lastname: Pierce
authors.forename: Mark
authors.initials: M
authors.lastname: Braun
mesh_terms: D000465:Algorithms; D045422:Continuous Positive Airway Pressure / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006787:Hospitals, Veterans; D006358:Hot Temperature; D006801:Humans; D006813:Humidity; D008297:Male; D008875:Middle Aged; D009518:New York; D010349:Patient Compliance; D018579:Patient Selection; D011788:Quality of Life; D012891:Sleep Apnea Syndromes / Q000503:physiopathology* / Q000523:psychology / Q000628:therapy*