Smartphone-based blood pressure monitoring via the oscillometric finger-pressing method

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Science Translational Medicine  07 Mar 2018:
Vol. 10, Issue 431, eaap8674
DOI: 10.1126/scitranslmed.aap8674

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Blood pressure at your fingertips

Managing high blood pressure can reduce the risk of cardiovascular disease. Standard blood pressure measurement devices use an inflatable arm cuff to vary the pressure applied to the brachial artery. For the smartphone device developed by Chandrasekhar et al., the user provides external pressure on an artery in the finger by pressing an optical sensor overlaying a force transducer on the back of a modified smartphone. The phone runs an app to ensure that the user maintains sufficient finger contact while computing brachial artery blood pressures from the finger-based measurements. The authors showed that blood pressure readings were similar using their smartphone device, a standard arm cuff device, and a finger-cuff device in a group of participants. This smartphone-based device could help make measuring blood pressure more accessible.