Evaluation of the Ability to Detect Bowel Gas During Laparoscopic Surgery

Inclusion Criteria:

1. Age 18 - 60 years old with the diagnosis of morbid obesity, who qualifies for laparoscopic gastric bypass surgical therapy, and has elected to undergo laparoscopic gastric bypass surgery.
2. Receiving care in the Stanford Hospital General Surgery Bariatric Surgery Clinic under the care of Dr. Dan Azagury
3. The patient is scheduled for laparoscopic roux en y gastric bypass surgery, with Dr. Azagury.
4. Willing and cognitively able to sign informed consent.

Exclusion Criteria:

1. Lack of or inability to provide informed consent.
2. Less than 18 years of age or greater than 60 years of age
3. Planned deviation from the standard laparoscopic gastric bypass operation
4. Conversion intra-operatively from a laparoscopic gastric bypass to an alternative laparoscopic surgical operation or to an open gastric bypass operation.
5. Enrollment in another device or drug study that may confound results.