Medscape August 20, 2020
Miriam Tucker

A smartphone app (Azumio Instant Heart Rate) may be a non-invasive method for identifying individuals with diabetes by detecting a “digital biomarker” of vascular changes, new research suggests.

The findings were published online August 17 in Nature Medicine by Robert Avram, MD, Department of Medicine and Cardiovascular Research Institute, University of California, San Francisco, and colleagues from UCSF and
Cal-Berkeley.

The approach uses photoplethysmography (PPG), an optical technique that detects blood flow changes through a vascular bed by shining light into tissue, such as at a fingertip or wrist, and quantifies the backscattered light corresponding to changes in blood volume. PPG is already used clinically to measure heart rate and peripheral oxygen saturation, and technological advances now enable PPG measurement from...

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