The treatment with Gastric Band was created in 1984 and brought to Brazil in 1996. It represents less than 2% of the procedures performed in Brazil and consists of the placement of a ring-shaped silicone prosthesis around the proximal (upper) part of the stomach, to cause a narrowing in the stomach and create a small capacity reservoir with 30 ml approximately. The food intake quickly fills this reservoir of the stomach and makes the patient feel satisfied and stop eating. The degree of narrowing of the stomach can be adjustable (regulated) post-operatively with the injection of fluid into the reservoir of the band located underneath the patient's skin. Thus, the narrowing of the stomach can be modified (enlarged or reduced), depending on the amount of food that the patient is able to ingest.

Although it does not promote changes in the production of hormones such as the Bypass technique, this procedure is quite safe and effective in reducing weight (20% to 30% of the initial weight), which also helps in the treatment of diabetes.

ADVANTAGES:

• Reversible and non-aggressive method that allows individualized adjustment in the diameter of the prosthesis.
• Minimal nutritional repercussions.
• Its withdrawal makes it possible to perform other bariatric procedures. Besides, there is no section and suture of the stomach.
• Low operative morbimortality and early return to usual activities.

DISADVANTAGES:

• Insufficient long-term weight loss.
• Requires strict patient cooperation in following the dietary guidelines.
• Inherent risks of the permanent use of a foreign body.
• Useful lifetime of the prosthesis limited to 5-10 years.
• For some patients (like sweet-eaters, reflux esophagitis and bulky hiatal hernia patients) is inadequate.
• Possibility of occurrence of long-term complications (intragastric band migration, band slipping and complications with the reservoir).
• The poor results and the high reoperation index leave the indication of this technique as an exception.

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