The aim of this study is to evaluate the determinants of postbariatric SNHPT persistence in patients who undergo Roux-en-Y gastric bypass on vertical-banded gastroplasty .
Between January 2011 and June 2012, a total of 302 consecutive morbidly obese patients underwent Roux-en-Y gastric bypass on vertical-banded gastroplasty at the Surgical Department Spedali Civili of Brescia, Italy.
A Roux-en-Y gastric bypass on vertical-banded gastroplasty  was performed in all patients, fashioning a 50 mL capacity gastric pouch and a common limb 150200 cm long, with the purpose of keeping the biliopancreatic limb-to-common limb ratio at 1 : 2.
Patients who had an effective diet within this timeframe may reasonably anticipate a recovery from SNHPT in the first semester after Roux-en-Y gastric bypass on vertical-banded gastroplasty .
The rate of inpatient bariatric procedures--laparoscopic adjustable gastric banding, vertical-banded gastroplasty
, Rouxen-Y gastric bypass, and biliopancreatic diversion/duodenal switch--increased by 800% during this interval, from just more than 12,000 to more than 113,500 cases annually.
Purely restrictive surgeries include the adjustable-banded gastroplasty (ABG) and the vertical-banded gastroplasty
(VBG) (NIDDK, 2004).
Gastric banding, gastric bypass, and vertical-banded gastroplasty
are surgeries that limit the amount of food the stomach can hold by closing off or removing parts of the stomach.