{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T14:08:54Z","timestamp":1773756534613,"version":"3.50.1"},"reference-count":0,"publisher":"European Respiratory Society (ERS)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur Respir J"],"published-print":{"date-parts":[[1998,5,1]]},"abstract":"<jats:p>The forced oscillation technique (FOT) is a noninvasive method of potential clinical interest for quantitatively assessing airway mechanics during sleep. We investigated the applicability of FOT as a diagnostic tool for noninvasive assessment of airflow obstruction in patients with sleep apnoea\/hypopnoea syndrome (SAHS) during sleep. In seven patients previously diagnosed with severe SAHS (mean+\/-SD apnoea\/ hypopnoea index (AHI) 67+\/-14) we performed a full polysomnography (PSG) together with on-line measurement of respiratory impedance (IZI) using FOT. For each patient we determined: 1) number of respiratory events conventionally detected by full PSG, those obtained by FOT and their degree of concordance; and 2) the characteristics and values of IZI during the respiratory events. FOT was well tolerated and easily applied in conjunction with a conventional sleep setup. The mean number of respiratory events x h(-1) detected by PSG and FOT were 55+\/-16 and 58+\/-17, respectively, with a strong concordance. IZI increased from a baseline of 11+\/-4 to 50+\/-20 cmH2O x L(-1) x s during apnoea (mean+\/-SD). In all but one patient intermittent increases of IZI occurred immediately before each obstructive apnoea. In four patients, the increases of IZI developed at end-expiration whereas in two others occurred during inspiration. During hypopnoea most of the patients showed decreases of IZI during expiration. In conclusion, forced oscillation technique can be used as a noninvasive and complementary tool for the diagnosis of respiratory events and provides an on-line quantitative approach for continuous monitoring of airflow obstruction during sleep in patients with sleep apnoea\/hypopnoea syndrome.<\/jats:p>","DOI":"10.1183\/09031936.98.11051128","type":"journal-article","created":{"date-parts":[[2002,11,22]],"date-time":"2002-11-22T01:46:01Z","timestamp":1037929561000},"page":"1128-1134","source":"Crossref","is-referenced-by-count":40,"title":["Forced oscillation technique for the evaluation of severe sleep apnoea\/hypopnoea syndrome: a pilot study"],"prefix":"10.1183","volume":"11","author":[{"suffix":"JR","family":"Badia","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R","family":"Farre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"JM","family":"Montserrat","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E","family":"Ballester","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L","family":"Hernandez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Rotger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R","family":"Rodriguez-Roisin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Navajas","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"81","published-online":{"date-parts":[[1998,5,1]]},"container-title":["European Respiratory Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1183\/09031936.98.11051128","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,2,24]],"date-time":"2025-02-24T07:22:19Z","timestamp":1740381739000},"score":1,"resource":{"primary":{"URL":"https:\/\/publications.ersnet.org\/lookup\/doi\/10.1183\/09031936.98.11051128"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,5,1]]},"references-count":0,"journal-issue":{"issue":"5","published-online":{"date-parts":[[1998,5,1]]},"published-print":{"date-parts":[[1998,5,1]]}},"alternative-id":["10.1183\/09031936.98.11051128"],"URL":"https:\/\/doi.org\/10.1183\/09031936.98.11051128","relation":{},"ISSN":["0903-1936","1399-3003"],"issn-type":[{"value":"0903-1936","type":"print"},{"value":"1399-3003","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,5,1]]}}}