Pilot Study of Emergency Department Patient Vital Signs Acquisition Using Experimental Video Photoplethysmography and Passive Infrared Thermography Devices Objective: Investigators conducted pilot sessions in live Emergency Department (ED) settings to prepare for formal comparative study of contact and experimental noncontact vital signs (VS) measurement devices. Methods: Contactbased cardiorespiratory monitors (CM) and video photoplethysmography (vPPG) measured heart rates (HR); contact thermometers and passive infrared thermography (pIR) obtained core and surface temperatures. Subject VS data comprised two 25min CM and vPPG recordings (initial unprimed xe2x80x9cTriage Checkxe2x80x9d window; four 1min xe2x80x9cFull Checkxe2x80x9d windows; 20min of xe2x80x9cRestingxe2x80x9d intervals) and temperature measurements. Results: Fortyeight of 102 approached patients participated: at least 5 subjects each in 012mo, 15y, 612y, 1317y agegroups, and at least 2 subjects each in 1829y, 3039y, 4049y, 5059y, 6069y, 7079y, 80y agegroups. Subjects were 40.4% female with median Fitzpatrick skin type of 3.0 (interquartile range 13: 2.05.0), ESI score of 3.0 (2.03.0), and core temperature of 98.6xc2xb0F (97.999.1xc2xb0F). Twelve subjects were excluded from vPPG analysis due to inadequate lighting, excessive motion, andor datastream loss. From the remaining 36 subjects with median HR CM  of 78.2bpm (69.894.8bpm), vPPG measured median HR vPPG of 75.0bpm (68.393.0bpm) from 170 (70.5%) of 241 possible Full Check windows; the median difference between HR CM  and HR vPPG  was 0.6bpm (0.22.3bpm). All Emergency Severity Index (ESI) HR components for 34 subjects with Triage Check HR vPPG measurements matched CMbased ESI HR components. Median differences between contact and pIR temperatures ranged from xe2x88x925.4xc2xb0F to xe2x88x924.4xc2xb0F. Conclusion: vPPG and pIR devices experimentally measured select live VS with promising results. Significance: Pilot data and protocol testing set the groundwork for fullscale ED vPPGpIR investigation.

Contactless measurement of physiological parameters The possibility of remote measurement of vital parameters makes it possible to implement telemedicine systems. However these systems are of particular interest for subjects who, due to age or pathologies, are weak and fragile. For these subjects, the management of devices for measuring vital parameters that must be appropriately positioned in contact with the skin, in fixed positions, is difficult. For this reason, in this paper two technologies are shown for the noncontact measurement of two physiological parameters, heart rate and respiratory rate, based on the acquisition and processing of video signals and radar signals. The techniques presented are based on the use of commercial devices. The use of these technologies simplifies the acquisition of vital parameters compared to traditional technologies. The reliability of the measured values was evaluated by comparing the values obtained with a pulse oximeter and an app on a smartphone.