{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T05:44:24Z","timestamp":1783403064257,"version":"3.54.6"},"reference-count":25,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,10]],"date-time":"2023-05-10T00:00:00Z","timestamp":1683676800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Instituto de Salud Carlos III and the European Union (ERDF\/ESF)","award":["PI20\/01210"],"award-info":[{"award-number":["PI20\/01210"]}]},{"name":"eHealth Center of the Universitat Oberta de Catalunya (UOC)","award":["PI20\/01210"],"award-info":[{"award-number":["PI20\/01210"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>(1) Background: Consumer smartwatches may be a helpful tool to screen for atrial fibrillation (AF). However, validation studies on older stroke patients remain scarce. The aim of this pilot study from RCT NCT05565781 was to validate the resting heart rate (HR) measurement and the irregular rhythm notification (IRN) feature in stroke patients in sinus rhythm (SR) and AF. (2) Methods: Resting clinical HR measurements (every 5 min) were assessed using continuous bedside ECG monitoring (CEM) and the Fitbit Charge 5 (FC5). IRNs were gathered after at least 4 h of CEM. Lin\u2019s concordance correlation coefficient (CCC), Bland-Altman analysis, and mean absolute percentage error (MAPE) were used for agreement and accuracy assessment. (3) Results: In all, 526 individual pairs of measurements were obtained from 70 stroke patients\u2014age 79.4 years (SD \u00b1 10.2), 63% females, BMI 26.3 (IQ 22.2\u201330.5), and NIHSS score 8 (IQR 1.5\u201320). The agreement between the FC5 and CEM was good (CCC 0.791) when evaluating paired HR measurements in SR. Meanwhile, the FC5 provided weak agreement (CCC 0.211) and low accuracy (MAPE 16.48%) when compared to CEM recordings in AF. Regarding the accuracy of the IRN feature, analysis found a low sensitivity (34%) and high specificity (100%) for detecting AF. (4) Conclusion: The FC5 was accurate at assessing the HR during SR, but the accuracy during AF was poor. In contrast, the IRN feature was acceptable for guiding decisions regarding AF screening in stroke patients.<\/jats:p>","DOI":"10.3390\/s23104632","type":"journal-article","created":{"date-parts":[[2023,5,11]],"date-time":"2023-05-11T01:37:24Z","timestamp":1683769044000},"page":"4632","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Accuracy of a Smartwatch to Assess Heart Rate Monitoring and Atrial Fibrillation in Stroke Patients"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6066-3450","authenticated-orcid":false,"given":"Claudia","family":"Meza","sequence":"first","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"},{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"},{"name":"Department of Medicine, Faculty of Medicine, Hospital Vall d\u2019Hebron, Universitat Autonoma de Barcelona, 08193 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jesus","family":"Juega","sequence":"additional","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"},{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"},{"name":"Department of Medicine, Faculty of Medicine, Hospital Vall d\u2019Hebron, Universitat Autonoma de Barcelona, 08193 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaume","family":"Francisco","sequence":"additional","affiliation":[{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"},{"name":"Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1435-4283","authenticated-orcid":false,"given":"Alba","family":"Santos","sequence":"additional","affiliation":[{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"},{"name":"Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4586-5804","authenticated-orcid":false,"given":"Laura","family":"Duran","sequence":"additional","affiliation":[{"name":"Arrhythmia Unit, Department of Cardiology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maite","family":"Rodriguez","sequence":"additional","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"},{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jose","family":"Alvarez-Sabin","sequence":"additional","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laia","family":"Sero","sequence":"additional","affiliation":[{"name":"Department of Neurology, Hospital Universitari Joan XXIII, 43005 Tarragona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3906-8574","authenticated-orcid":false,"given":"Xavier","family":"Ustrell","sequence":"additional","affiliation":[{"name":"Department of Neurology, Hospital Universitari Joan XXIII, 43005 Tarragona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Saima","family":"Bashir","sequence":"additional","affiliation":[{"name":"Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), 17790 Girona, Spain"},{"name":"Department of Neurology, Hospital Universitari de Girona Dr. JosepTrueta, 17007 Girona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4478-7744","authenticated-orcid":false,"given":"Joaqu\u00edn","family":"Serena","sequence":"additional","affiliation":[{"name":"Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), 17790 Girona, Spain"},{"name":"Department of Neurology, Hospital Universitari de Girona Dr. JosepTrueta, 17007 Girona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yolanda","family":"Silva","sequence":"additional","affiliation":[{"name":"Cerebrovascular Pathology Research Group, Girona Biomedical Research Institute (IDIBGI), 17790 Girona, Spain"},{"name":"Department of Neurology, Hospital Universitari de Girona Dr. JosepTrueta, 17007 Girona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos","family":"Molina","sequence":"additional","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"},{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0725-1369","authenticated-orcid":false,"given":"Jorge","family":"Pagola","sequence":"additional","affiliation":[{"name":"Stroke Unit, Department of Neurology, Hospital Universitari Vall d\u2019Hebron, 08035 Barcelona, Spain"},{"name":"Vall d\u2019Hebron Institut de Recerca (VHIR), 08035 Barcelona, Spain"},{"name":"Department of Medicine, Faculty of Medicine, Hospital Vall d\u2019Hebron, Universitat Autonoma de Barcelona, 08193 Barcelona, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1007\/s11910-018-0871-1","article-title":"Detection of Atrial Fibrillation in Cryptogenic Stroke","volume":"18","author":"Haeusler","year":"2018","journal-title":"Curr. 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