Next, differences in BP between the different BPMs and Accutension Stetho were determined.
During measurements of electronic oscillometric BPMs, Korotkoff sounds were simultaneously collected using a stethoscope head beneath a cuff connected to a smartphone, and an app named Accutension Stetho could then yield an auscultatory BP reading as a reference. We enrolled 99 consecutive subjects and tested 6 brands of BPMs in this study. Here, we introduce a smartphone-based technique to verify the accuracy of blood pressure monitors (BPMs).
It is recommended that oscillometric devices be calibrated by auscultation when first used, but this is difficult in practice.
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