Selective proximal vagotomy and posterior truncal vagotomy have been p
erformed in 71 consecutive gastric bypass (GBP) patients from June 199
1 to December 1992. Vagotomy was used to prevent or diminish the incid
ence of marginal ulcer in GBP patients. Anterior and posterior highly
selective proximal vagotomy with circular-instrument stapled gastrojej
unostomy in patients undergoing GBP distal Roux-en-Y with jejunal inte
rposition had no marginal ulcer complications (minimal follow-up 18 mo
nths).