Cuffless Blood Pressure Estimation from PPG Using Machine Learning

RESEARCH AND TEACHING ONLY: NEVER FOR DIAGNOSIS OR TREATMENT. NOT A MEDICAL DEVICE, NOT A BLOOD-PRESSURE MEASUREMENT. Can a fingertip photoplethysmogram of 2.1 s give blood pressure without a cuff? On 219 real people of the PPG-BP database, with subject-wise cross-validation, no model meets the AAMI limits. LSBoost on demographics and pulse shape beats the mean predictor by about 2.6 mmHg for systolic and 0.5 mmHg for diastolic pressure, and the pulse shape adds little over age, sex, BMI and heart rate: the paired intervals cross 0. A labelled what-not-to-do demonstration shows how a random split of segments makes a 1-nearest-neighbour on demographics alone, with no signal, pass AAMI and reach BHS grade A.

Category: Biomedical Engineering

Biomedical Engineering Project BM06 from ProTechSC Academy, with graphical abstract, video demonstration and project guidance.