Medical Xpress July 31, 2024
A wearable blood pressure monitor uses sound to capture a continuous record of the vital sign data. Continuous, noninvasive blood pressure monitoring has been a longtime goal of medicine, given blood pressure’s utility as a metric for clinicians, but for decades, the options have been limited to internally placed arterial catheters or inflatable pressure cuffs.
Newer proposed methods need frequent calibration with an inflatable cuff.
Raymond Jimenez and colleagues propose a method based on resonance sonomanometry, in which the artery is stimulated by an acoustic transducer and its resonant response and dimensions are measured using ultrasound. The work is published in the journal PNAS Nexus.
Just as a guitar string changes tone as its tension is manipulated, so does the...
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