In this research work, an augmented-reality (AR) system for monitoring patient’s vitals in real-time during surgical procedures is proposed and metrologically characterized in terms of transmission error rates and latency. These specifications, in fact, are crucial to ensure real-time response which is a critical requirement for Health applications. The proposed system automatically acquires the vitals from the operating room instrumentation and shows them in real-time directly on a set of wearable AR glasses. In this way, the surgical team has a real-time visualization of a comprehensive set of patient’s information, without constantly looking at the instrumentation. The goal of this work is to design (taking into account the metrological characteristics) and implement a system was designed to ensure modularity, flexibility, ease of use and, most importantly, a reliable communication.