{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T04:34:51Z","timestamp":1789619691866,"version":"build-2803163510"},"reference-count":18,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2016,7,9]],"date-time":"2016-07-09T00:00:00Z","timestamp":1468022400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Perfusion"],"published-print":{"date-parts":[[2016,9]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>We sought to reveal whether the severity of angina pectoris affects sleep quality after elective coronary artery bypass grafting.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and methods:<\/jats:title>\n                    <jats:p>Patients scheduled to undergo isolated coronary artery bypass grafting were divided into two groups, having a recent myocardial infarction (Group 1, n=22, mean age 59.40\u00b17.79 years) or not having a recent myocardial infarction (Group 2, n=30, mean age 59.73\u00b17.72 years). The assessment included the Canadian Cardiovascular Society Angina Score, the visual analogue scale for postoperative pain and the Pittsburgh Sleep Quality Index (PSQI).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>The two groups were similar in regard to baseline characteristics. Cross-clamp time was significantly higher (p=0.007) and the use of inotropes was significantly more common (p=0.01) in those patients with recent myocardial infarction compared to those without. Mean Canadian Cardiovascular Society scores were also higher in patients with recent myocardial infarction (p=0.02). Total Pittsburgh Sleep Quality Index score was significantly higher in patients with recent myocardial infarction (8.45\u00b13.50 vs. 5.03\u00b12.32, respectively, p&lt;0.001). In multivariate analysis, higher angina score (OR: 3.27, 95% CI, 1.20-8.90, p=0.02) and longer time of intensive care unit stay (OR: 6.15, 95% CI, 1.49-25.35, p=0.01) were found to be independent predictors of poor sleep quality. The Canadian Cardiovascular Society angina score showed a significant positive correlation with poor sleep duration score (&lt;0.001), sleep disturbance score (p=0.02), day dysfunction due to sleepiness score (p=0.001), sleep efficiency score (p=0.003), overall sleep quality score (0.03) and total PSQI score (p=0.004).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>The severity of angina pectoris in the preoperative period is independently associated with worse sleep quality after elective isolated coronary artery bypass surgery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0267659115627690","type":"journal-article","created":{"date-parts":[[2016,1,25]],"date-time":"2016-01-25T21:58:28Z","timestamp":1453759108000},"page":"471-476","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":21,"title":["Angina severity predicts worse sleep quality after coronary artery bypass grafting"],"prefix":"10.1177","volume":"31","author":[{"given":"Seyhan","family":"Yilmaz","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Surgery, Hitit University Faculty of Medicine, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eray","family":"Aksoy","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery, Hitit University Corum Education and Research Hospital, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tolga","family":"Do\u011fan","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Hitit University Corum Education and Research Hospital, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adem \u0130lkay","family":"Diken","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery, Hitit University Faculty of Medicine, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adnan","family":"Yalc\u0131nkaya","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery, Hitit University Faculty of Medicine, Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kelime","family":"Oz\u015fen","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Surgery Nursing, Hitit University Corum Education and Research Hospital, 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