{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T01:29:03Z","timestamp":1775870943355,"version":"3.50.1"},"reference-count":32,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2011,9,26]],"date-time":"2011-09-26T00:00:00Z","timestamp":1316995200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Respirology"],"published-print":{"date-parts":[[2011,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p><jats:bold>Background and objective:\u2003<\/jats:bold> To combine the diagnosis of OSA with titration of positive airway pressure (PAP), current guidelines recommend that split\u2010night polysomnography (PSG) be performed if an AHI of \u226540\/h is recorded over 2\u2003h. However, the diagnostic validity of partial\u2010night PSG is uncertain. This study aimed to test the validity of partial\u2010night PSG and to determine the optimum AHI cut\u2010off points.<\/jats:p><jats:p><jats:bold>Methods:\u2003<\/jats:bold> Patients who visited the sleep centre at a tertiary medical centre between January and December 2008, for symptoms related to sleep disorders (sleepiness, snoring, sleep disturbance), and who completed full\u2010night PSG, were evaluated for this study. Full\u2010night PSG data were processed to obtain partial\u2010night PSG data, from which AHI were computed as a reference for diagnosing severe OSA. Full\u2010night and partial\u2010night PSG data obtained over different recording times (expressed as <jats:italic>x<\/jats:italic>\u2010h PSG, where <jats:italic>x<\/jats:italic>\u2003=\u20031\u20136) were compared using receiver operating characteristic (ROC) curve analysis. The diagnostic validity of 2\u2010h PSG with different AHI cut\u2010off points (25\/h to 45\/h) was also calculated.<\/jats:p><jats:p><jats:bold>Results:\u2003<\/jats:bold> Data from 198 PSG recordings was processed. For 2\u2010h PSG, an AHI cut\u2010off point of 30\/h gave the highest accuracy of 90.9%. Comparing areas under the ROC curves (AUC), 2\u2010h PSG (AUC\u2003=\u20030.97) was as good as 2.5\u2010h PSG (AUC\u2003=\u20030.977, <jats:italic>P<\/jats:italic>\u2003=\u20030.057) and 3\u2010h PSG (AUC\u2003=\u20030.978, <jats:italic>P<\/jats:italic>\u2003=\u20030.125), but was better than 1.5\u2010h PSG (AUC\u2003=\u20030.955, <jats:italic>P<\/jats:italic>\u2003<jats:italic>=<\/jats:italic>\u20030.016).<\/jats:p><jats:p><jats:bold>Conclusions:\u2003<\/jats:bold> Partial\u2010night PSG is effective for diagnosing severe OSA. If there is an unabridged PSG recording indicating an AHI of \u226530\/h for 2\u2003h, severe OSA can be diagnosed and PAP titration initiated.<\/jats:p>","DOI":"10.1111\/j.1440-1843.2011.02022.x","type":"journal-article","created":{"date-parts":[[2011,7,18]],"date-time":"2011-07-18T10:32:46Z","timestamp":1310985166000},"page":"1096-1102","source":"Crossref","is-referenced-by-count":16,"title":["The minimum period of polysomnography required to confirm a diagnosis of severe obstructive sleep apnoea"],"prefix":"10.1111","volume":"16","author":[{"given":"KUN\u2010TA","family":"CHOU","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"YU\u2010TIEN","family":"CHANG","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"YUH\u2010MIN","family":"CHEN","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"KANG\u2010CHENG","family":"SU","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"DIANG\u2010WANG","family":"PERNG","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SHI\u2010CHUAN","family":"CHANG","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"GUANG\u2010MING","family":"SHIAO","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,9,26]]},"reference":[{"key":"e_1_2_5_2_2","doi-asserted-by":"publisher","DOI":"10.1378\/chest.130.3.780"},{"key":"e_1_2_5_3_2","first-page":"234","article-title":"Obstructive sleep apnea and chronic intermittent hypoxia: a review","volume":"49","author":"Chiang AA","year":"2006","journal-title":"Chin. 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