Clinical Research Directory

Inclusion Criteria: 1. Participant is a male or female 18 years of age or older. 2. Participant is a current patient at West Michigan Cancer Center. 3. Participant is undergoing liver, pancreas or biliary or gastrointestinal surgery of a combination of the above, or other major oncological surgery. 4. Participant is willing and able to provide written informed consent before surgery. Exclusion Criteria: 1. Participant has hemodynamic instability at the conclusion of the surgery. (These subjects will be deemed disqualified). 2. Participant has history of previous VIH. 3. Participant has a mental condition rendering the subject incapable of understanding the nature, scope and consequences of the study.