Bariatric Surgery

Gastric bypass surgery is the most common bariatric – or weight loss – procedure performed. After the surgery, patients are unable to eat as much as they used to prior to the procedure because the stomach is smaller. The procedure is performed under general anesthesia. Using staples, the surgeon divides the stomach into a small upper section and a larger bottom section. The top section of the stomach (called the pouch) is about the size of a walnut, holding about one ounce of food. The second step during this procedure is the bypass. The surgeon connects a small part of the small intestine (the jejunum) to a small hole in your pouch. Food eaten will then travel from the pouch into this new opening in the small intestine resulting in the body absorbing fewer calories. Gastric bypass can be performed as open surgery, or it can be performed laparoscopically, a minimally invasive method using small cuts to the belly and the insertion of a camera – a laparoscope – along with the surgical instruments.


Lap-band surgery, also called gastric banding, is a minimally invasive weight loss procedure. This procedure does not involve metal surgical staples, any removal or sectioning of the stomach or of the small intestine. Lap-band surgery is performed laparoscopically with small incisions made in the belly area. It is often performed as an outpatient procedure so the patient does not have to stay overnight or for an extended period in the hospital. The lap-band is wrapped around the stomach using one of the instruments inserted into one of the incisions made. The band is connected to an access port, which is placed under the skin in the muscle. Saline solution is injected into the port opening, thereby adjusting the band’s tightness. This  can be adjusted following surgery, if necessary.

 Gastric sleeve surgery, or vertical sleeve gastrectomy, is another option for those who are good candidates for bariatric surgery. This surgery also is referred to as gastric sleeve resection, sleeve gastrectomy, tube gastrectomy or laparoscopic sleeve gastrectomy. During the gastric sleeve procedure, the surgeon narrows the stomach – normally about the size of a football – into a thin vertical sleeve, about the size and shape of a banana. The remainder of the stomach is removed. The patient is left with a smaller stomach that will help him/her feel fuller on much smaller portions of food, while allowing for normal digestion and absorption of nutrients. The sleeve also has been shown to result in the secretion of fewer hunger hormones, resulting in less overall hunger.

Nutritional Counseling

Saint Peter’s University Hospital offers one-on-one nutritional counseling for those who seek weight loss surgery. Attendance at a free bariatric seminar at Saint Peter’s University Hospital is required prior to scheduling an appointment for nutrition counseling with a registered nutritionist (dietician). The nutritionist will schedule your counseling appointment at the conclusion of the seminar.


To obtain a list of dates when the free Bariatric seminars will be offered at Saint Peter’s University Hospital, please call: 732-745-8600, extension 8159.

Subscribe to Our Newsletter

Subscribe to the Saint Peter's Better Health newsletter and receive the latest health news, community events, recipes, and more.

Give to Saint Peter's

Proceeds generated are used to provide assistance for the many capital and operating needs of Saint Peter's University Hospital. Donate TodayLearn More