# Clinical validation of non-contact vital signs in an emergency department setting

## TL;DR

This study shows that camera devices can accurately measure heart rate and breathing rate in emergency departments.

## Contribution

The study validates non-contact measurement of vital signs using commercial cameras and software in a real-world emergency setting.

## Key findings

- Camera-acquired heart rate had a high correlation (R∼0.99) and low error (RMSE of 1.62).
- Respiratory rate measurements also showed strong correlation (R∼0.91) and acceptable error (RMSE of 1.71).
- The cameras captured HR in 83% and RR in 94% of measurements.

## Abstract

To evaluate the accuracy of heart rate and respiratory rate acquired by commercially-available device cameras and software.

One-hundred and eleven subjects were enrolled at an urban academic teaching hospital in Texas. Heart rate (HR) and respiratory rate (RR) measurements were obtained using three commercially-available cameras and processed using software from Presage Technologies. These values were compared to manual counts of a three-lead ECG and end-tidal CO2 from a patient monitor.

The cameras were able to capture HR in 83% of the measurements and RR in 94% of the RR measurements. Camera-acquired HR showed an extremely high correlation with R∼0.99 and a root-mean-square error (RMSE) of 1.62. Respiratory rate showed a high correlation with R∼0.91 and an RMSE of 1.71.

Heart rate and respiratory rate can be accurately acquired using commercially-available camera devices and software for signal processing.