{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T04:12:25Z","timestamp":1778299945065,"version":"3.51.4"},"reference-count":20,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2020,9,27]],"date-time":"2020-09-27T00:00:00Z","timestamp":1601164800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Noninvasive Electrocardiol"],"published-print":{"date-parts":[[2020,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Paroxysmal atrial fibrillation (pAF) is a major risk factor for ischemic stroke, but challenging to detect with routine short\u2010term monitoring methods. In this pilot study, we present a novel method for prolonged ECG and screening for pAF in patients with a recent embolic stroke of unknown source (ESUS).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Fifteen patients aged\u00a0\u2265\u00a050\u00a0years with a recent ESUS were assigned to wear an external electrode belt\u2010based 1\u2010lead ECG device (Beat2Phone) continuously for 2\u00a0weeks (wear time). The device was operated via a mobile phone application in nonhospital conditions. The primary outcome was patient adherence to monitoring. Secondary outcomes were incidence of new pAF, quality\u2010wise comparison to Holter, and usability of the novel ECG monitoring method with Systems Usability Scale (SUS). We also performed a 24\u2010 to 48\u2010hr comparison between simultaneous Beat2Phone ECG and a standard Holter in 6 patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Wear time of Beat2Phone device was over 80% in 5 (33.3%) patients, 50%\u201380% in 7 (46.6%) patients, and less than 50% in 3 (20%) patients. We detected pAF\u00a0\u2265\u00a030\u00a0s in 1 patient (6.7%). In the simultaneous monitoring with Beat2Phone and Holter, there were a total of 817 (out of 1979) analyzable periods of sinus rhythm or premature atrial or ventricular beats (Cohen's Kappa coefficient 0.92\u00a0\u00b1\u00a00.02 between Beat2Phone and Holter), and no pAF events. Beat2Phone ECG showed remarkable SUS scores in user evaluations (average score: 81.4 out of 100 on SUS).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Beat2Phone device was easy to use among ESUS patients and in optimal conditions provided high\u2010quality 1\u2010lead ECG signal for diagnosing pAF.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical trial registration<\/jats:title><jats:p>The study was not registered, as it was a nonrandomized single\u2010arm pilot study.<\/jats:p><\/jats:sec>","DOI":"10.1111\/anec.12802","type":"journal-article","created":{"date-parts":[[2020,9,27]],"date-time":"2020-09-27T08:40:41Z","timestamp":1601196041000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Prolonged ECG with a novel recorder utilizing electrode belt and mobile device in patients with recent embolic stroke of undetermined source: A pilot 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