Vertical Banding Gastroplasty (VBG) was once the desired weight loss surgery option for many institutions and surgeons. In 1991, vertical banding gastroplasty was endorsed by the National Institutes of Health Consensus Conference for the treatment of morbid obesity , but today bariatric surgeons opt for more reliable procedures including Roux-en-Y gastric bypass.
Vertical Banded Gastroplasty is no longer being performed in the United States, however, small procedures are being done worldwide.
Since the 1980s, it has been reported that some patients may require a second surgical intervention due to the presence of complications or insufficient weight loss after VBG; however, over time, the number of patients who need revisionary bariatric surgery has grown. 
Revising a failed bariatric procedure is a significant challenge for any bariatric surgeon. There are several options for revising a vertical banded gastroplasty including:
One study suggests Roux-en-Y Gastric Bypass the go-to revisional surgery option. A 2009 study suggests that compared to Re-VBG, Roux-en-Y Gastric Bypass, demonstrate the lowest rate of complications and better quality of life . Another common option, the Biliopancreatic Diversion with Duodenal Switch (BPD), shows compare rates of complication and sufficient weight loss .
Not every patient is capable of converting their VBG to their desired option. In the recent case study, a patient who had intended to revise VBG to Roux-en-Y Gastric Bypass, but when the doctor was performing the surgery he found something unusual.
The band, which wraps around the stomach to restrict the food intake, was lost
The only other option, that the patient can do is perform Gastric Sleeve Surgery. This will allow the patient to heal, so they can undergo gastric bypass surgery at a later date.