iPhone App Accurately Monitors Blood Pressure

Blood pressure app
Electrical engineers at Michigan State University reported in Nature that they have developed a cuffless and calibration-free blood pressure monitoring application for a smartphone. Quoting: “We developed an iPhone X application to measure blood pressure (BP) via the “oscillometric finger pressing method”. The user presses her fingertip on both the front camera and screen to increase the external pressure of the underlying artery, while the application measures the resulting variable-amplitude blood volume oscillations via the camera and applied pressure via the strain gauge array under the screen. The application also visually guides the fingertip placement and actuation and then computes BP from the measurements just like many automatic cuff devices.” The error rate was about the same as that for a finger cuff. MORE WITH VIDEO
Image Credit: MSU Today (see video)