Maximal weight loss after banded and unbanded laparoscopic Roux-en-Y gastric bypass: a randomized controlled trial.
BACKGROUND
Laparoscopic Roux-en-Y gastric bypass (LRYGB) leads to significant weight loss and correction of co-morbidities in most patients. Banded LRYGB was designed to enhance weight loss and avoid weight regain.


METHODS
A randomized controlled pilot trial was designed to comparatively analyze the results and complications of banded (6.5 cm) and unbanded LRYGB. The present study was an interim analysis focused on morbidity, mortality, and maximal weight loss.


RESULTS
The 60 patients were divided into 2 groups. Group 1 underwent unbanded LRYGB (n = 30) and group 2 underwent banded LRYGB (n = 30). No differences were found between the 2 groups in terms of age, gender, body mass index, or operative time. No significant differences were found in the percentage of excess weight loss and body mass index at 6, 12, and 24 months between the 2 groups. The frequency of complications was similar in both groups; 1 patient required band removal because of stenosis at the level of the mesh.


CONCLUSIONS
The weight loss pattern in both groups was similar at 1 and 2 years postoperatively. Proper assessment of weight maintenance and late weight regain will require longer follow-up.
Arceo-Olaiz
Ricardo
R
Department of Surgery, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.
España-Gómez
María Nayví
MN
Montalvo-Hernández
Jorge
J
Velázquez-Fernández
David
D
Pantoja
Juan Pablo
JP
Herrera
Miguel F
MF
D000328:Adult; D005260:Female; D015390:Gastric Bypass; D015391:Gastroplasty; D006801:Humans; D010535:Laparoscopy; D008297:Male; D009767:Obesity, Morbid / Q000601:surgery; D010865:Pilot Projects; D011183:Postoperative Complications; D014839:Vomiting / Q000209:etiology; D015431:Weight Loss