title: Long-term results of a randomized trial comparing banded versus standard laparoscopic Roux-en-Y gastric bypass.
abstract: BACKGROUND
  Banded Roux-en-Y gastric bypass was designed to avoid or diminish weight regain in the long term. In 2008, we published the initial results of a pilot study design to comparatively evaluate surgical morbidity, mortality, and maximum weight loss in patients undergoing banded and unbanded laparoscopic Roux-en-Y gastric bypass (LRYGB). The present study analyzes the 5-year results.
  
  
  METHODS
  A randomized, controlled trial was carried out in 60 morbidly obese patients who underwent LRYGB. Patients were divided in 2 groups. Half of the patients underwent the banded version of the LRYGB, and half underwent the unbanded version. The 5-year excess weight loss (EWL) and loss of body mass index (BMI) were comparatively analyzed.
  
  
  RESULTS
  There were 58 females and 2 males with a mean preoperative BMI of 47±4.9 kg/m(2). A total of 21 patients with banded LRYGB and 22 with unbanded LRYGB completed 5-year follow-up. One patient died 3 years after surgery from metastatic melanoma. EWL at 5 years was 61.6%±19.6% versus 59.8%±15.9% (P = ns), and loss of BMI was 32.9%±5.2% versus 32.8%±4.3% (P = ns), respectively, for the banded and unbanded group.
  
  
  CONCLUSIONS
  In this small study, there were no statistical differences in the EWL and the BMI lost at 5 years between the group of patients who underwent banded and unbanded LRYGB.
authors.affiliation: Department of Surgery and the Obesity Clinic, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Tlalpan, Mexico.
authors.forename: Xeily
authors.initials: X
authors.lastname: Zarate
authors.forename: Ricardo
authors.initials: R
authors.lastname: Arceo-Olaiz
authors.forename: Jorge
authors.initials: J
authors.lastname: Montalvo Hernandez
authors.forename: Eduardo
authors.initials: E
authors.lastname: García-García
authors.forename: Juan
authors.initials: J
authors.lastname: Pablo Pantoja
authors.forename: Miguel F
authors.initials: MF
authors.lastname: Herrera
mesh_terms: D000328:Adult; D015992:Body Mass Index; D005260:Female; D015390:Gastric Bypass / Q000379:methods*; D015391:Gastroplasty / Q000379:methods*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D009767:Obesity, Morbid / Q000601:surgery*; D016896:Treatment Outcome; D015431:Weight Loss / Q000502:physiology