A wearable medical sensors system for in-situ monitoring vital signs of patients with hemorrhagic shock in big disaster scenes

In big disaster sites, such as earthquakes, wars, and traffic accidents, monitoring the vital signs of people with hemorrhagic shock is crucial for accurate injury classification and timely rescue. Clinical medical equipment is unsuitable for in-situ detection since large size and complex operations. In this paper, we propose a set of wearable medical sensors system that integrates bio-radar, wristwatch, nose clip, and biochemical sensor to monitor the vital signs of patients in big disaster scenes. This system offers portable advantages over bulky medical equipment and flexible measurement of blood pressure, heart rate, blood oxygen saturation, respiratory rate, body temperature, and levels of glucose, lactate, and hemoglobin (Hb). By addressing individual differences and improving the signal-to-noise ratio, the sensors system can achieve highly sensitive measurements online. Experimental studies on 15 patients in ICU wards reveal high uniformity of measurement results between our wearable sensors system and clinical equipment. Based on the data collected by the wearable sensor system and processed through a pre-established assessment model, color labels indicating severity levels will be presented to classify the injury degree for efficient rescue. Our proposed wearable medical sensor system contributes to saving more lives in big disaster scenes through accurate and timely measurement of vital signs.