title: A Perioperative Evaluation of Respiratory Mechanics Using the Forced Oscillation Technique.
abstract: BACKGROUND
  The forced oscillation technique is a new approach for assessing perioperative respiratory function.
  
  
  METHODS
  This study enrolled 40 patients undergoing general anesthesia: 20 for ≥2 hours and 20 for <2 hours. Respiratory parameters were measured the day before and after surgery using forced oscillation during normal tidal breathing.
  
  
  RESULTS
  Respiratory resistance at 5 Hz (P = 0.029 with the Student t test with unequal variances and P = 0.033 with analysis of covariance) changed significantly in the patients who underwent procedures for which they were anesthetized for >2 hours.
  
  
  CONCLUSIONS
  The forced oscillation technique is a clinical tool that can be used to assess the effects of perioperative ventilation strategies on respiratory mechanics.
authors.affiliation: From the Department of Anesthesiology, Osaka Medical College, Osaka, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Kuzukawa
authors.forename: Junko
authors.initials: J
authors.lastname: Nakahira
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Sawai
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Minami
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000403:Airway Resistance / Q000502:physiology; D000768:Anesthesia, General / Q000379:methods / Q000592:standards; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009991:Oscillometry / Q000379:methods* / Q000592:standards*; D019990:Perioperative Care / Q000379:methods* / Q000592:standards*; D011446:Prospective Studies; D012129:Respiratory Function Tests / Q000379:methods / Q000592:standards; D015656:Respiratory Mechanics / Q000502:physiology*; D013990:Tidal Volume / Q000502:physiology