{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T02:30:52Z","timestamp":1769481052410,"version":"3.49.0"},"reference-count":46,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,1,24]],"date-time":"2026-01-24T00:00:00Z","timestamp":1769212800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Centres de Recerca de Catalunya (CERCA) Program and Secretaria d\u2019Universitats i Recerca de la Generalitat de Catalunya","award":["GRC 2021 SGR 01390"],"award-info":[{"award-number":["GRC 2021 SGR 01390"]}]},{"name":"Spanish Ministry of Science, Innovation and Universities\u2014European Regional Development Fund","award":["PID2021-126455OB-I00"],"award-info":[{"award-number":["PID2021-126455OB-I00"]}]},{"name":"Spanish Ministry of Science, Innovation and Universities\u2014European Regional Development Fund","award":["PID2024-160620OB-I00"],"award-info":[{"award-number":["PID2024-160620OB-I00"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Sleep-disordered breathing (SDB) is common after stroke and may negatively influence recovery, yet it is frequently underdiagnosed. Portable respiratory monitoring devices could facilitate early SDB screening in these patients. We estimated the prevalence of sleep apnea (SA) using a smartphone-based monitoring system in post-stroke patients and examined associations between respiratory indices, stroke severity and disability (NIHSS, mRS), and rehabilitation outcomes (motor and cognitive Functional Independence Measure; FIM). Consecutive patients admitted to inpatient rehabilitation within three months after a stroke underwent an overnight assessment with a smartphone-based respiratory monitoring device, which estimated the apnea\u2013hypopnea index (AHI), mean and minimum SpO2, time with SpO2 &lt; 94% and &lt;90%, and hourly oxygen desaturation events (\u22653% and \u22654%). Of the 104 screened patients, 59 were recruited, while 56 had valid recordings. Most patients (89%) had previously undiagnosed SA: 11% mild (AHI \u2265 5 and &lt;15), 38% moderate (AHI \u2265 15 and &lt;30), and 41% severe (AHI \u2265 30). Greater event burden and nocturnal hypoxemia were associated with older age, worse baseline disability (mRS), lower admission motor FIMs, and poorer rehabilitation metrics. Smartphone-based portable monitoring is an accessible, easy-to-use approach that may enable earlier identification of SA, particularly in individuals with substantial hypoxemia or respiratory event burden.<\/jats:p>","DOI":"10.3390\/s26030794","type":"journal-article","created":{"date-parts":[[2026,1,26]],"date-time":"2026-01-26T16:13:48Z","timestamp":1769444028000},"page":"794","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Early Screening of Sleep-Disordered Breathing Using a Smartphone-Based Portable System in Stroke Patients and Its Relevance for Rehabilitation: A Prospective Observational Study"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8310-4208","authenticated-orcid":false,"given":"Sergiu","family":"Albu","sequence":"first","affiliation":[{"name":"Institut Guttmann, Institut Universitari de Neurorehabilitaci\u00f3 Adscrit a la UAB, 08916 Badalona, Spain"},{"name":"Universitat Aut\u00f3noma de Barcelona, 08193 Bellaterra, Spain"},{"name":"Fundaci\u00f3 Institut d\u2019Investigaci\u00f3 en Ci\u00e8ncies de la Salut Germans Trias i Pujol, 08916 Badalona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7493-1268","authenticated-orcid":false,"given":"Yolanda","family":"Castillo-Escario","sequence":"additional","affiliation":[{"name":"Department of Automatic Control, Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08028 Barcelona, Spain"},{"name":"Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red de Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alicia","family":"Romero Marquez","sequence":"additional","affiliation":[{"name":"Institut Guttmann, Institut Universitari de Neurorehabilitaci\u00f3 Adscrit a la UAB, 08916 Badalona, Spain"},{"name":"Universitat Aut\u00f3noma de Barcelona, 08193 Bellaterra, Spain"},{"name":"Fundaci\u00f3 Institut d\u2019Investigaci\u00f3 en Ci\u00e8ncies de la Salut Germans Trias i Pujol, 08916 Badalona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M\u00f3nica","family":"L\u00f3pez Andurell","sequence":"additional","affiliation":[{"name":"Institut Guttmann, Institut Universitari de Neurorehabilitaci\u00f3 Adscrit a la UAB, 08916 Badalona, Spain"},{"name":"Universitat Aut\u00f3noma de Barcelona, 08193 Bellaterra, Spain"},{"name":"Fundaci\u00f3 Institut d\u2019Investigaci\u00f3 en Ci\u00e8ncies de la Salut Germans Trias i Pujol, 08916 Badalona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6541-8729","authenticated-orcid":false,"given":"Raimon","family":"Jan\u00e9","sequence":"additional","affiliation":[{"name":"Department of Automatic Control, Universitat Polit\u00e8cnica de Catalunya-BarcelonaTech (UPC), 08028 Barcelona, Spain"},{"name":"Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain"},{"name":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red de Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0501-1660","authenticated-orcid":false,"given":"Hatice","family":"Kumru","sequence":"additional","affiliation":[{"name":"Institut Guttmann, Institut Universitari de Neurorehabilitaci\u00f3 Adscrit a la UAB, 08916 Badalona, Spain"},{"name":"Universitat Aut\u00f3noma de Barcelona, 08193 Bellaterra, Spain"},{"name":"Fundaci\u00f3 Institut d\u2019Investigaci\u00f3 en Ci\u00e8ncies de la Salut Germans Trias i Pujol, 08916 Badalona, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"479","DOI":"10.5664\/jcsm.6506","article-title":"Clinical Practice Guideline for Diagnostic Testing for Adult Obstructive Sleep Apnea: An American Academy of Sleep Medicine Clinical Practice Guideline","volume":"13","author":"Kapur","year":"2017","journal-title":"J. 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