Why may I need a band adjustment after gastric banding weight loss surgery?

Adjusting the size of the opening between the two parts of the stomach controls how much food passes from the upper to the lower part of the stomach. This opening (stoma) between the two parts of the stomach can easily be decreased or increased, by injecting or removing saline from the band. The band is connected by a tube to a reservoir placed beneath the skin during surgery. The surgeon or nurse practitioner can later control the amount of saline in the band by piercing the reservoir through the skin with a fine needle. The ability to adjust the band is a unique feature of gastric banding and is a normal part of follow-up.

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