title: Lung volume reduction surgery and nutritional status in patients with severe emphysema.
abstract: OBJECTIVE
  We studied the short-term effect of lung volume reduction surgery on nutritional status including body composition and the relationship between preoperative nutritional status and postoperative morbidity.
  
  
  METHODS
  Subjects were 28 patients with emphysema who underwent bilateral thoracoscopic lung volume reduction surgery (23 simultaneously, 5 staged). Functional tests, body weight, and body composition were measured before and 6 months after surgery. Fat-free mass and fat mass were assessed by bioelectrical impedance analysis.
  
  
  RESULTS
  FEV1.0 improved 35.2% following surgery and maximal oxygen uptake 23.8%. Body weight and fat-free mass increased significantly after surgery, while fat mass was unchanged. Of the 23 undergoing simultaneous bilateral lung volume reduction surgery, 8 had major complications-3 required additional surgery to close air leaks, 3 required mechanical ventilation (> 72 hrs), and 2 developed postoperative infection. The preoperative percentage of ideal body weight and fat-free mass was significantly higher among patients without major complications.
  
  
  CONCLUSIONS
  Bilateral lung volume reduction surgery increases fat-free mass and provides functional improvement for underweight patients with severe emphysema. We found fat-free mass and body weight to be good predictors of unacceptable postoperative complications following bilateral lung volume reduction surgery.
authors.affiliation: Department of Surgery III, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nezu
authors.forename: T
authors.initials: T
authors.lastname: Kawaguchi
authors.forename: M
authors.initials: M
authors.lastname: Kimura
authors.forename: M
authors.initials: M
authors.lastname: Yasukawa
authors.forename: K
authors.initials: K
authors.lastname: Kushibe
authors.forename: S
authors.initials: S
authors.lastname: Taniguchi
authors.forename: M
authors.initials: M
authors.lastname: Yoshikawa
mesh_terms: D000368:Aged; D004646:Emphysema / Q000601:surgery*; D006801:Humans; D008297:Male; D009752:Nutritional Status; D011013:Pneumonectomy