Gastric Sleeve

Gastric sleeve surgery, also known as sleeve gastrectomy, helps patients lose weight by reducing the size of their stomachs. This procedure is often very successful since it removes the portion of the stomach that is responsible for stimulating hunger. Patients will eat less because they will feel less hungry.

Sleeve gastrectomy is best suited for patients who are either:

  • Extremely overweight
  • Have a BMI of 30+

During a sleeve gastrectomy procedure, Dr. Arellano removes approximately 60-85% of the stomach. The remaining portion of the stomach acts as a “sleeve” that restricts food intake. In this procedure, the stomach’s functionality remains fully intact. This means that although the amount of food a patient can consume post-operatively is considerably less, there are few restrictions of the types of foods that can be consumed.

Sleeve gastrectomy does not involve any re-routing of the intestines, which nearly eliminates the chance of intestinal blockage, anemia, osteoporosis, and protein and vitamin deficiency. Since the surgery involves removing a large portion of the stomach, the procedure is irreversible.


In some cases, sleeve gastrectomy is the first stage in a two-part treatment plan. This is entirely dependent on a patient’s weight loss after surgery. Typically, patients can expect to lose 60-90% of their excess weight within 1-2 years of the procedure. If required, a second surgery is likely to occur 6-18 months after the initial procedure.

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