Feasibility study of non-contact physiological parameter measurements for remote emergency triage
Objective To evaluate the accuracy of non-contact physiological measurements and remote prediction triage by analyzing the characteristics of emergency patients with critical illness and mild illness,and to explore the feasible methods of remote assistance for patients.Methods The information characteris-tics of 419 patients admitted to the emergency department of Chongqing Emergency Medical Center from June 1st to October 31st,2022 were included.The patients were divided into the critical group(221 cases)and the mild group(198 cases)based on the findings of the emergency pre-examination triage,and the diffierences of medical information characteristics between the two groups were compared.The mobile phone application was used to measure heart rate and respiratory rate parameters in a non-contact way,and the results were com-pared with contact measurement results to evaluate the accuracy of non-contact measurement of heart rate and respiratory rate.Compared with the on-site pre-screening and triage classification in emergency department,the accuracy of remote pre-examination triage classification was evaluated.Results The number of patients aged 18-<45 in the mild group was significantly higher than that in the critical group,with statistical signifi-cance(P<0.05).In the critical group,the conscious states of"responding to sound stimuli"and"responding to pain stimuli"were significantly higher than those in the mild group,and most of the patients in the mild group were"conscious",with statistical significance(P<0.05).The chief complaints of patients in the critical group were"chest pain,disturbance of consciousness and bloody stool"which were significantly higher than those in the mild group,and the patients in the mild group were mostly"joint pain",and the differences were statistically significant(P<0.05).The top three patients in the two groups were hypertension,diabetes and coronary heart disease.The patients with previous history of tumor and gastrointestinal bleeding in the critical group were significantly higher than those in the mild group,and the differences were statistically significant(P<0.05).Comparing the heart rate measured by non-contact method with that measured by contact meth-od,the difference was statistically significant(P<0.05).There was no significant difference between non-con-tact respiratory rate measurement and contact respiratory rate measurement(P>0.05).The emergency pre-examination triage of critically ill patients was significantly higher than that of remote pre-examination triage,and the difference was statistically significant(P<0.05).Conclusion The accuracy of non-contact measure-ments of heart rate and respiratory rate needs further study,but the reliability of remote emergency pre-exam-ination triage will be gradually improved when combined with the characteristics of emergency patients's med-ical information.