{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T22:58:45Z","timestamp":1792796325221,"version":"4.5.0"},"reference-count":41,"publisher":"European Respiratory Society (ERS)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur Respir J"],"accepted":{"date-parts":[[2011,1,28]]},"published-print":{"date-parts":[[2011,8]]},"abstract":"<jats:p>Complex sleep apnoea (CompSA) may be observed following continuous positive airway pressure (CPAP) treatment.<\/jats:p>\n                  <jats:p>In a prospective study, 675 obstructive sleep apnoea patients (mean age 55.9 yrs; 13.9% female) participated. Full-night polysomnography was performed at diagnosis, during the first night with stable CPAP and after 3 months of CPAP.<\/jats:p>\n                  <jats:p>12.2% (82 out of 675 patients) had initial CompSA. 28 of those were lost to follow-up. Only 14 out of the remaining 54 patients continued to satisfy criteria for CompSA at follow-up. 16 out of 382 patients not initially diagnosed with CompSA exhibited novel CompSA after 3 months. 30 (6.9%) out of 436 patients had follow-up CompSA. Individuals with CompSA were 5 yrs older and 40% had coronary artery disease. At diagnosis, they had similar sleep quality but more central and mixed apnoeas. On the first CPAP night and at follow-up, sleep quality was impaired (more wakefulness after sleep onset) for patients with CompSA. Sleepiness was improved with CPAP, and was similar for patients with or without CompSA at diagnosis and follow-up.<\/jats:p>\n                  <jats:p>CompSA is not stable over time and is mainly observed in predisposed patients on nights with impaired sleep quality. It remains unclear to what extent sleep impairment is cause or effect of CompSA.<\/jats:p>","DOI":"10.1183\/09031936.00162009","type":"journal-article","created":{"date-parts":[[2011,4,4]],"date-time":"2011-04-04T22:29:57Z","timestamp":1301956197000},"page":"329-337","source":"Crossref","is-referenced-by-count":78,"title":["A prospective polysomnographic study on the evolution of complex sleep apnoea"],"prefix":"10.1183","volume":"38","author":[{"given":"W.","family":"Cassel","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Canisius","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.F.","family":"Becker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Leistner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Ploch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Jerrentrup","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C.","family":"Vogelmeier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"U.","family":"Koehler","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"Heitmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"81","published-online":{"date-parts":[[2011,4,4]]},"reference":[{"key":"2024102020373406000_38.2.329.1","doi-asserted-by":"crossref","first-page":"660","DOI":"10.1183\/09031936.93.04060660","article-title":"Occurrence of breathing disorders during CPAP administration in obstructive sleep apnoea syndrome","volume":"4","author":"Marrone","year":"1991","journal-title":"Eur Respir J"},{"key":"2024102020373406000_38.2.329.2","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1093\/sleep\/27.2.229","article-title":"Obstructive sleep-disordered breathing with a dominant cyclic alternating pattern \u2013 a recognizable polysomnographic variant with practical clinical implications","volume":"27","author":"Thomas","year":"2004","journal-title":"Sleep"},{"key":"2024102020373406000_38.2.329.3","doi-asserted-by":"publisher","DOI":"10.1007\/s11325-007-0140-z"},{"key":"2024102020373406000_38.2.329.4","doi-asserted-by":"crossref","first-page":"1203","DOI":"10.1093\/sleep\/29.9.1203","article-title":"Complex sleep apnea syndrome: is it a unique clinical syndrome","volume":"29","author":"Morgenthaler","year":"2006","journal-title":"Sleep"},{"key":"2024102020373406000_38.2.329.5","doi-asserted-by":"publisher","DOI":"10.1097\/MCP.0b013e3282f1479b"},{"key":"2024102020373406000_38.2.329.6","doi-asserted-by":"crossref","first-page":"406","DOI":"10.5664\/jcsm.27273","article-title":"Complex sleep apnea: it isn\u2019t really a disease","volume":"4","author":"Malhotra","year":"2008","journal-title":"J Clin Sleep Med"},{"key":"2024102020373406000_38.2.329.7","doi-asserted-by":"publisher","DOI":"10.1097\/01.mcp.0000183061.98665.b0"},{"key":"2024102020373406000_38.2.329.8","doi-asserted-by":"publisher","DOI":"10.1378\/chest.06.2287"},{"key":"2024102020373406000_38.2.329.9","doi-asserted-by":"publisher","DOI":"10.1164\/rccm.200307-1023OC"},{"key":"2024102020373406000_38.2.329.10","doi-asserted-by":"publisher","DOI":"10.1016\/j.sleep.2006.04.005"},{"key":"2024102020373406000_38.2.329.11","doi-asserted-by":"crossref","unstructured":"Peter H Penzel T Peter JH . 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