PI: Edward S. Chen, MD (School of Medicine)
Co-Is: Joseph P. Angelo, Anissa Elayadi, and Robert L. Wilson
Photoplethysmography (PPG) is an optical technique that senses blood volume changes from the arterial pulse signal and is used worldwide to monitor heart rate and blood oxygenation (e.g. commercial pulse-oximetry). While robust, it requires constant sensor contact to the skin. Remote PPG (rPPG) via RGB cameras utilizes the same basic principles but enables patient monitoring from a distance. We developed rPPG extraction methods through analysis of our large size sensor data (DSLR). Funding from IDIES will allow us to translate these methods to complete analysis of our small size sensor data (smartphone), optimizing extraction of non-contact blood oxygen saturation and blood pressure from RGB data. Our approach using off-the-shelf RGB sensors promises a scalable best-case tool for remote vital signs.
Dr. Chen is the medical director of respiratory care services at Johns Hopkins Bayview and chair of the Hopkins Epic development project (electronic medical record) critical care workgroup. His dual roles facilitated implementation of many necessary changes to patient care practice to maintain safety during the COVID crisis. One key interest is to leverage technology to improve health care outcomes, particularly for underserved patient populations. The current grant application reflects the intersection of his clinical and research interests, recognizing the distinct value that a multi-disciplinary team provides for successful development and implementation of novel approaches to patient care.
