Band erosion: incidence, etiology, management and outcome after banded vertical gastric bypass

BACKGROUND

Prosthetic devices have been used in bariatric operations to control the outlet of the gastric pouch and thus maintain weight loss. A complication of these prostheses is erosion or migration into the gastric lumen. The transected banded vertical gastric bypass (TBVGBP) is one of the modifications of gastric bypass. This modification has a silastic ring placed around the pouch to form the stoma.

METHOD

The records of patients with band erosion (BE) after this operation were reviewed, to determine the incidence, etiology, management and outcome during a 9-year period.

RESULTS

From May 1992 through May 2001, 2,949 primary and secondary TBVGBP were performed through the Center for Surgical Treatment of Obesity, utilizing 3 hospitals. 48 patients (1.63%) were documented to have BE: 40 documented by us and 8 by subsequent treating surgeons or at other facilities. Presenting symptoms were weight regain (18), stenosis or obstruction (17), pain (9), bleeding (7), and 5 were incidental findings. Some patients presented with more than one symptom. 8 were treated expectantly with spontaneous extrusion of the band. 16 bands have been removed endoscopically in 14 patients. 26 patients had open surgical revision, with 12 having band removal only and 14 band removal and revision of either the gastroenterostomy with or without band replacement or conversion to a distal Roux-en-Y gastric bypass (DRYGBP). Two patients who had revision to DRYGBP were re-revised to a longer common limb because of protein malnutrition. Three patients who had revision of the gastroenterostomy with band removal and replacement developed leaks that were managed non-surgically. Two of these re-eroded and the band was removed endoscopically with a subsequent revision to a DRYGBP. There was no death due to BE.

CONCLUSION

BE is an uncommon complication of TBVGBP. Infection, previous bariatric operations and surgical technique play a role in BE. BE is best managed by endoscopic removal but can be treated expectantly or by open surgical intervention. Band removal without replacement or revision to DRYGBP may result in weight regain.

Revision of Failed Gastric Bypass to Distal Roux-en-Y Gastric Bypass: A Review of 65 Cases

BACKGROUND

No bariatric operation has been documented to effect adequate weight loss in all patients. Patients with inadequate weight loss or significant weight regain with an anatomically intact short-limb gastric bypass, of which the Fobi pouch operation (FPO) for obesity is a modification, are usually revised to a distal Roux-en-Y gastric bypass (DRYGBP) to enhance weight loss.

METHOD

A retrospective review of the charts of all patients who had a revision to a DRYGBP at our Center during an 8-year period was carried out and the findings analyzed.

RESULTS

65 patients who had the FPO had a revision to the DRYGBP. Most were super obese patients who, even though they had lost significant weight, were still morbidly obese. Some were patients who had not lost adequate weight or <40% excess weight, and a small number were patients who requested more weight loss even though they had a BMI of < 35. 15 patients developed protein malnutrition requiring supplemental feeding. 6 required rerevision to short-limb gastric bypass.

CONCLUSION

Revision of short-limb gastric bypass to DRYGBP usually enhances weight loss but at a cost of an increased incidence of protein malnutrition.

Panniculectomy adjuvant to obesity surgery

BACKGROUND

Many patients who qualify for obesity surgery have a moderate to large panniculus (grade 1-5). They can benefit from panniculectomy done concurrently with gastric bypass (GBP) or subsequently after significant weight reduction, usually 18 months after the GBP.

METHOD

Over the last 8 years, 2,231 bariatric operations were performed at the Center. 577 panniculectomies were done, with 428 (74.2%) concurrent with the GBP and 149 (25.8%) subsequent to the GBP.

RESULTS

The redundant pannus weighed from 5 to 54.5 kg. Wound problems occured in 15.1% of panniculectomies. Transfusion was necessary in 1.9%. Hospital stay was 4 to 5 days, and was no greater than in patients that underwent the GBP alone. Those with grades 3-5 suffer more back-pain and problems of hygiene resulting from panniculitis.

CONCLUSION

A very redundant panniculus compounds the patient's physical, social and emotional problems. Where cardiopulmonary and other medical status are satisfactory, a panniculectomy may be offered to patients with a symptomatic panniculus at the time of bariatric surgery, as a physically beneficial and cost-effective adjuvant.