{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T07:49:48Z","timestamp":1790668188982,"version":"4.1.0"},"reference-count":0,"publisher":"S. Karger AG","issue":"1","license":[{"start":{"date-parts":[[2017,1,1]],"date-time":"2017-01-01T00:00:00Z","timestamp":1483228800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2017,1,1]],"date-time":"2017-01-01T00:00:00Z","timestamp":1483228800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Respiration"],"published-print":{"date-parts":[[2017]]},"abstract":"<b><i>Background:<\/i><\/b> The prevalence of undiagnosed obstructive sleep apnea (OSA) during preoperative evaluation and the best method to screen OSA and its association with postoperative complications remain unclear. <b><i>Objectives:<\/i><\/b> To determine the prevalence of undiagnosed OSA in preoperative Indian patients undergoing noncardiac surgery, to compare the diagnostic accuracy of the STOP-BANG questionnaire to a preoperative level III sleep study, and to assess the association of OSA with postoperative complications. <b><i>Methods:<\/i><\/b> A prospective cohort of 245 consecutive adults with \u22652 risk factors for OSA who underwent noncardiac surgery between July 2011 and February 2013 were studied. The STOP-BANG questionnaire was administered to all patients, and 182\/245 (74.2%) patients underwent a preoperative level III sleep study. Patients were followed for postoperative complications in hospital and contacted at 30 days after surgery. <b><i>Results:<\/i><\/b> 70\/182 (38.5%) obtained a new diagnosis of OSA, including 11\/182 (6%) with moderate to severe OSA (apnea-hypopnea index \u226515\/h). On logistic regression analyses, the presence of OSA was independently associated with postoperative oxygen desaturation (OR 5.96, 95% CI 2.35-15.1, <i>p<\/i> < 0.01), a postoperative complication within 7 days (OR 3.63, 95% CI 1.77-7.45, <i>p<\/i> < 0.01) and within 30 days (OR 3.5, 95% CI 1.74-7.1, <i>p<\/i> < 0.01). The STOP-BANG questionnaire did not identify 12\/70 (17%) of the patients diagnosed with OSA and classified 28% of the cohort as OSA when the level III sleep study was negative. <b><i>Conclusions:<\/i><\/b> Unrecognized OSA is common in preoperative patients and is independently associated with postoperative complications. The STOP-BANG questionnaire had a lower performance in the diagnosis of OSA in a South Indian population than the level III sleep study.<\/jats:p>","DOI":"10.1159\/000470914","type":"journal-article","created":{"date-parts":[[2017,4,10]],"date-time":"2017-04-10T21:01:29Z","timestamp":1491858089000},"page":"18-25","source":"Crossref","is-referenced-by-count":45,"title":["Undiagnosed Obstructive Sleep Apnea and Postoperative Outcomes: A Prospective Observational Study"],"prefix":"10.1159","volume":"94","author":[{"given":"Uma","family":"Devaraj","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5723-4375","authenticated-orcid":false,"given":"Srinivas","family":"Rajagopala","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ajay","family":"Kumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priya","family":"Ramachandran","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philip J.","family":"Devereaux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George A.","family":"D'Souza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"127","published-online":{"date-parts":[[2017,4,11]]},"container-title":["Respiration"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/470914","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/470914","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/470914","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T17:25:51Z","timestamp":1745429151000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000470914"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2017,6,13]]},"published-print":{"date-parts":[[2017,6,22]]}},"URL":"https:\/\/doi.org\/10.1159\/000470914","archive":["Portico"],"relation":{"is-supplemented-by":[{"id-type":"doi","id":"10.6084\/m9.figshare.4836833","asserted-by":"subject"}]},"ISSN":["0025-7931","1423-0356"],"issn-type":[{"value":"0025-7931","type":"print"},{"value":"1423-0356","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017]]}}}