{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T18:34:32Z","timestamp":1772217272483,"version":"3.50.1"},"reference-count":20,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2023,8,11]],"date-time":"2023-08-11T00:00:00Z","timestamp":1691712000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Noninvasive Electrocardiol"],"published-print":{"date-parts":[[2023,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>To evaluate the diagnostic utility of basal and post\u2010exercise QRS\u2010T angle in patients with stable coronary artery disease (CAD).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This cross\u2010sectional and observational study analyzed 190 patients with stable angina. The QRS\u2010T angle is measured on the 12\u2010lead electrocardiograms at baseline and just after stopping the treadmill stress test in patients undergoing conventional coronary angiography (CAG). The pre\u2010 and post\u2010exercise QRS\u2010T angle and \u0394QRS\u2010T angle were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of the 190 patients, 66 (34.7%) were assigned to group 1 (patients with coronary lesion) and 124 (65.3%) to group 2 (patients without coronary lesion) after CAG. There was no statistically significant difference in QRS\u2010T angle between groups at baseline (pre\u2010exercise) (30.7\u2009\u00b1\u200917 vs. 27.8\u2009\u00b1\u200912.8, <jats:italic>p<\/jats:italic>\u2009=\u2009.233). The QRS\u2010T angle value was significantly higher in group 1 than in group 2 (68.8\u2009\u00b1\u200940.3 vs. 22.7\u2009\u00b1\u200921.5, <jats:italic>p<\/jats:italic>\u2009=\u2009.01) after exercise (post\u2010exercise). The \u0394QRS\u2010T angle was also significantly higher in group 1 than in group 2 (38.1\u2009\u00b1\u200937.6 vs. \u22125.1\u2009\u00b1\u200922.9, <jats:italic>p<\/jats:italic>\u2009=\u2009.01). Receiver operating characteristic curve revealed that the cut\u2010off value of QRS\u2010T angle (post\u2010exercise) for the coronary obstruction was &gt;51.5\u00b0 with 81% of sensitivity and 66% of specificity (AUC: 0.832, <jats:italic>p<\/jats:italic>\u2009=\u2009.001, CI: 0.769\u20130.894). Duke treadmill score for coronary stenosis was &gt;1.5 with 77% of sensitivity and 69% of specificity (AUC: 0.814, <jats:italic>p<\/jats:italic>\u2009=\u2009.001, CI: 0.749\u20130.878).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>It could be proposed that post\u2010exercise QRS\u2010T angle and \u0394 QRS\u2010T angle are significantly associated with coronary obstruction in patients with stable angina and appear to be more sensitive than the Duke treadmill score and traditional electrocardiographic parameters.<\/jats:p><\/jats:sec>","DOI":"10.1111\/anec.13082","type":"journal-article","created":{"date-parts":[[2023,8,12]],"date-time":"2023-08-12T05:42:53Z","timestamp":1691818973000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The diagnostic utility of the basal and post\u2010exercise <scp>QRS\u2010T<\/scp> angle in patients with stable coronary artery disease"],"prefix":"10.1111","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2744-2891","authenticated-orcid":false,"given":"Tufan","family":"G\u00fcnay","sequence":"first","affiliation":[{"name":"Department of Cardiology Health Sciences University, Bursa City Hospital  Bursa Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9632-395X","authenticated-orcid":false,"given":"Alper","family":"Karakus","sequence":"additional","affiliation":[{"name":"Department of Cardiology Health Sciences University, Bursa Y\u00fcksek Ihtisas Training and Research Hospital  Bursa Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,8,11]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2019.08.012"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1093\/europace\/eur393"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCEP.109.859108"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcmg.2011.02.017"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1159\/000076697"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM197906143002402"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jelectrocard.2017.02.008"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIR.0b013e318277d6a0"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jacc.2012.07.013"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIR.0b013e31829b5b44"},{"key":"e_1_2_10_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.amjcard.2013.01.294"},{"key":"e_1_2_10_13_1","doi-asserted-by":"publisher","DOI":"10.1093\/eurheartj\/ehz425"},{"key":"e_1_2_10_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0736(98)90289-8"},{"issue":"8","key":"e_1_2_10_15_1","first-page":"688","article-title":"Value of the frontal planar QRS\u2010T angle on cardiac dysfunction in patients with old myocardial infarction","volume":"6","author":"Li Y. 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