No-Touch vital sign monitoring tested in operating rooms

This study is testing whether a camera can accurately measure heart rate, blood pressure, and oxygen levels by recording a patient's face during surgery. The goal is to replace some of the sticky sensors and cuffs that touch the skin, which can cause infections or injuries in fragile patients. About 315 adults having gallbladder, liver, or hernia surgery will participate, and the camera readings will be compared to standard monitors.