title: Evidence-based medicine: open and laparoscopic bariatric surgery.
abstract: BACKGROUND
  The aim of this study was to perform an evidence-based analysis of the literature on open and laparoscopic surgery for morbid obesity.
  
  
  METHODS
  Human studies on surgery for morbid obesity were conducted. Multiple publications of the same studies, abstracts, and case reports were reviewed. Current Contents, MEDLINE, EMBASE, and Cochrane Library databases were investigated.
  
  
  RESULTS
  Open Roux-en-Y gastric by pass (RYGB) for morbidly obese patients and long-limb RYGB for superobese patients are highly effective procedures. Randomized controlled trials comparing malabsorptive procedures with other bariatric operations are needed. The long-term efficacy of adjustable silicone gastric banding (ASGB) still is undetermined because of poor evidence. Laparoscopic RYGB is as safe as its open counterpart, although its long-term results are lacking. Laparoscopic ASGB is less invasive than open ASGB, although its efficacy cannot be determined because of poor evidence. Laparoscopic vertical banded gastroplasty (VBG) is becoming unpopular since the decreasing trend of open VBG. Laparoscopic biliopancreatic diversion with duodenal switch is feasible, but needs further studies.
  
  
  CONCLUSIONS
  Randomized controlled trials comparing the various laparoscopic operations are strongly needed.
authors: Division of Laparoscopic Surgery, Mount Sinai School of Medicine, 19 East 98 Street, Suite 5a, # 1103, New York, 10029, USA.
authors: P
authors: P
authors: Gentileschi
authors: S
authors: S
authors: Kini
authors: M
authors: M
authors: Catarci
authors: M
authors: M
authors: Gagner
mesh_terms: D000713:Anastomosis, Roux-en-Y / Q000379:methods; D016022:Case-Control Studies; D015331:Cohort Studies; D000075202:Contraindications; D016099:Endoscopy, Gastrointestinal / Q000379:methods; D019317:Evidence-Based Medicine / Q000379:methods*; D015390:Gastric Bypass / Q000379:methods; D015391:Gastroplasty / Q000379:methods; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D009767:Obesity, Morbid / Q000601:surgery*; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic; D012828:Silicones / Q000627:therapeutic use; D016896:Treatment Outcome
chemical_list: D012828:Silicones