Hemorai Inc
The goal of this clinical trial is to learn whether the Hemorai Vysio wearable device can be used safely and feasibly to track relative changes over time in tissue oxygen, hemoglobin-related signals, blood flow, and oxygen use during and after inpatient surgery. The device does not provide absolute clinical measurements. Researchers will also explore whether changes recorded by the device occur around signs or treatments related to blood loss. The main questions are: * Can the device collect usable information during and after surgery without interfering with routine care? * What device-related problems, such as skin irritation or discomfort, occur? * Do changes in the device measurements occur around changes in blood pressure, laboratory results, fluid administration, or blood transfusion? * How comfortable and practical is the device for participants and bedside nurses? Participants undergoing surgery will wear the device on the upper arm or chest. Trained study staff will apply it before surgery. It will remain in place for up to 48 hours after surgery, or until discharge or earlier removal. Participants will continue to receive usual hospital monitoring and care. Bedside nurses may also join the study and complete a short voluntary survey. Nurses may check the device position and adjust the strap for comfort. They will not interpret the device measurements or use them to make treatment decisions. Hemorai Vysio is an investigational device. Its measurements will be analyzed for research and will not be used to guide participants' medical care. Participants are not expected to receive a direct medical benefit from taking part.
Inclusion Criteria: Surgical participants: * 18 to 85 years of age * Undergoing inpatient surgery with an expected overnight hospital stay * Capable of providing informed consent * No anticipated contraindications to skin-worn sensors * Hemodynamically stable at enrollment, with no vasopressor requirement Nursing participants: * Bedside nurse caring for an enrolled surgical participant during the Vysio device-wear period * Capable of providing informed consent for the study-related usability survey * Willing to complete the voluntary usability survey Exclusion Criteria: Surgical particip…
An investigational, non-FDA-approved strap-based wearable optical device placed on the upper arm or chest by trained study staff. It records intermittent 2-minute optical signal windows every 15 minutes during surgery and for up to 48 hours postoperatively. Research outputs include relative trends in local tissue oxygenation (StO2), hemoglobin-related signals, perfusion index (SFI), and tissue oxygen consumption (tMRO2). The device operates in parallel with standard-of-care monitoring; data are analyzed offline and are not used for clinical decisions.