Quantifying Activity Using Wireless Wearable Technology

In this single-center non-randomized prospective cohort study, cardiac surgical patients undergoing cardiac surgery with cardiopulmonary bypass will be enrolled consecutively with written informed consent from the time this protocol is approved by the IRB until 100 subjects are enrolled (expected duration of subject enrollment is 12 months). Upon arrival into the ICU, cardiac surgery subjects will have a Fitbit Charge 2 device placed on their wrist and will wear the device until the fifth post-operative day. This device will wirelessly transmit data regarding activity and sleep quality to a smartphone application for the duration of wear. No identifiable patient information will be entered into the smartphone application or transmitted to any external entity.

Inclusion Criteria: * Inclusion Criteria: Adult (Age \> 18) patients undergoing scheduled, elective cardiac surgery with cardiopulmonary bypass Exclusion Criteria: * Those who do not meet the inclusion criteria, pregnant women, prisoners, those with skin or systemic infections, those who are paraplegic or quadriplegic and those with allergies to the polyurethane material comprising the FitBit strap.