{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T23:27:31Z","timestamp":1782602851371,"version":"3.54.5"},"reference-count":49,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2019,2,9]],"date-time":"2019-02-09T00:00:00Z","timestamp":1549670400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Noninvasive Electrocardiol"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Arrhythmias are considered one of the major causes of death in ST elevation myocardial infarction (STEMI), particularly in the early in\u2010hospital phase. Pre\u2010infarction angina (PIA) has been suggested to have a protective role.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>To study the difference in acute electrocardiographic findings between STEMI patients with and without PIA and to assess the in\u2010hospital arrhythmias in both groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and Methods<\/jats:title><jats:p>We prospectively enrolled 238 consecutive patients with STEMI. Patients were divided into two groups: those with or without PIA. ECG data recorded and analyzed included ST\u2010segment resolution (STR) at 90\u00a0min, corrected QT interval (QTc) and dispersion (QTD), T\u2010peak\u2010to\u2010T\u2010end interval (Tp\u2010Te), and dispersion and Tp\u2010Te\/QT ratio. In\u2010hospital ventricular arrhythmias encountered in both groups were recorded. Predictors of in\u2010hospital arrhythmias were assessed among different clinical and electrocardiographic parameters.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Of the 238 patients included, 42 (17%) had PIA and 196 (83%) had no PIA. Patients with PIA had higher rates of STR (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.0001), while patients with no PIA had higher values of QTc (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.006), QTD (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.001), Tp\u2010Te interval (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.001), Tp\u2010Te dispersion (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.0001), and Tp\u2010Te\/QT ratio (<jats:italic>p<\/jats:italic>\u00a0=\u00a00.01) compared to those with angina preceding their incident infarction (PIA). This was reflected into significantly higher rates of in\u2010hospital arrhythmias among patients with no PIA (20% vs. 7%, <jats:italic>p<\/jats:italic>\u00a0=\u00a00.04). Furthermore, longer Tp\u2010Te interval and higher Tp\u2010Te\/QT ratio independently predicted in\u2010hospital ventricular arrhythmias.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Pre\u2010infarction angina patients had better electrocardiographic measures of repolarization dispersion and encountered significantly less arrhythmic events compared to patients who did not experience PIA.<\/jats:p><\/jats:sec>","DOI":"10.1111\/anec.12637","type":"journal-article","created":{"date-parts":[[2019,2,9]],"date-time":"2019-02-09T13:49:28Z","timestamp":1549720168000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Electrocardiographic measures of ventricular repolarization dispersion and arrhythmic outcomes among ST elevation myocardial infarction patients with pre\u2010infarction angina undergoing primary percutaneous coronary intervention"],"prefix":"10.1111","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4986-4849","authenticated-orcid":false,"given":"Tarek A. N.","family":"Ahmed","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine Asyut University Hospital Asyut Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amr A.","family":"Abdel\u2010Nazeer","sequence":"additional","affiliation":[{"name":"Department of Cardiovascular Medicine Asyut University Hospital Asyut Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayman K. 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