Tissue Oxygenation Are Associated With Anastomotic Leak Rates After an Ivor Lewis Esophagectomy

In addition to the one Wipox measurement at the planned anastomotic site, the RSA will collect the systemic pulse oximeter reading, blood pressure, and heart rate at the time of the Wipox measurement. These measurements will be obtained as both internal controls of the accuracy of the Wipox (matching the Wipox pulse rate with the patient's), as well as additional variables to control for when assessing factors which might contribute to oxygen saturation at the anastomotic site. Pre-operative demographic information will be collected. This will include age, sex, any co-morbidities (cardiac, diabetes, respiratory), and use of pre-operative chemotherapy or chemo-radiotherapy.