title: Anesthesia for bariatric surgery.
abstract: BACKGROUND
  Bariatric surgery has a lot of problems in anesthesia. We retrospectively compared anesthesia for bariatric surgery in yellow race with that in normal weight patients.
  
  
  METHODS
  Twenty patients who received bariatric surgery and 20 normal body weight patients who received abdominal surgery in Japan were enrolled. Induction condition, depth of epidural space, dose of anesthetics, duration of the effects of muscle relaxants, ventilation, and fluid management in bariatric surgery were analyzed and compared with those in normal body weight patients.
  
  
  RESULTS
  An epidural catheterization was successful under ultrasound guide in the bariatric group. The depth epidural space was significantly larger in the bariatric group. Cormack and Lehane classification and the number of intubation attempt were not different between the two groups, while one bariatric case was once awakened to intubate blindly. Pressure-controlled ventilation was used in the bariatric group. Four bariatric patients were continuously ventilated after surgery. The doses of anesthetics and fluid infusion rate were not different between the two groups when calculated by ideal body weight in the bariatric group. The duration of the effects of rocuronium and pancuronium were shorter in the bariatric group.
  
  
  CONCLUSIONS
  For anesthesia of yellow race patients undergoing bariatric surgery, intravenous anesthetics and acetate Ringer's solution with 1% glucose could be administered per ideal body weight, the effects of muscle relaxants lasted shorter, pressure-controlled ventilation could keep oxygenation with adequate carbon dioxide, and ultrasound assist was useful in epidural catheterization in the bariatric patients.
authors.affiliation: Department of Anesthesiology and Critical Care, Higashi Omiya General Hospital, 5-18 Higashi Omiya, Minuma-ku, Saitama-shi, Saitama 337-0051, Japan. nishit-tky@umin.ac.jp
authors.forename: Tomoki
authors.initials: T
authors.lastname: Nishiyama
authors.forename: Yumiko
authors.initials: Y
authors.lastname: Kohno
authors.forename: Keiko
authors.initials: K
authors.lastname: Koishi
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000767:Anesthesia, Epidural / Q000379:methods*; D000771:Anesthesia, Intravenous / Q000379:methods*; D050110:Bariatric Surgery / Q000379:methods; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology* / Q000517:prevention & control; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000188:drug therapy* / Q000453:epidemiology / Q000601:surgery; D012189:Retrospective Studies; D016896:Treatment Outcome