This feasibility study is for the purpose of determining if the G-Tech Device can differentiate between normal return of GI activity post-operatively and the myoelectric activity in patients who develop a POI.

While preventing the development of a POI is most important, POIs still occur; therefore, it is important to definitively diagnose a POI as early as possible during the post-operative course for treatment to prevent patient discomfort, complications, and extended hospital stay. The purpose of the G-Tech study is to determine if the G-Tech Device can detect a difference in the myoelectric signals from patients who develop a POI compared to those patients who do not develop a POI. It is anticipated that up to 20% of patients enrolled in this study and consented preoperatively, excluding screen failures, will show evidence of a post-operative ileus as detected by the G-Tech GutCheck Device and differentiate the myoelectric signals from the patients who do not develop a POI. Patients who are known to have developed a POI may also be selected for the study.

Inclusion Criteria:

1. Willing and able to provide informed consent;
2. Eighteen (18) years of age or older;
3. Subject is willing and able to follow all study requirements;
4. Subject who will undergo or has undergone open or laparoscopic gastrointestinal surgery or surgery not involving the abdominal cavity.

Exclusion Criteria:

1. Subject is pregnant or suspects pregnancy;
2. Known allergy to medical grade adhesive;
3. Weight > 350 lbs (159 Kg);

The study population will include candidates who undergo GI surgery or other surgery outside not involving the abdominal cavity, who agree to the application of the G-Tech Device to be placed on his/her abdomen and meet all eligibility criteria as defined. Up to 100 subjects may be consented prior to surgery who are planned to undergo gastrointestinal surgery or a planned surgery that does not involve the abdominal cavity or following. Up to 50 subjects who have undergone gastrointestinal surgery or surgery not involving the abdominal cavity may be consented post-operatively during their hospital stay for this study.

Analyses planned to be presented at scientific meetings and published in peer reviewed medical journals.