Reliability of smartphone measurements of vital parameters: A prospective study using a reference method

In this study, we aimed to evaluate the accuracy of HR and SaO2 data obtained using a smartphone compared with the measurements of a vital signs monitor (VSM) and an arterial blood gas (ABG) device, respectively. In this single-center prospective study, the HR and SaO2 measurements were performed using the built-in sensor and light source of a Samsung Galaxy S8 smartphone and compared to the results of VSM and ABG device. The Bland-Altman analysis was used to evaluate and visualize the agreement between the methods. The data of 101 patients were analyzed. There was a high correlation between HR measured by smartphone and HR measured by VSM [P