The patients were admitted to the coronary care unit after angioplasty and were given routine anti-thrombotic therapy of aspirin (100 mg) and clopidogrel (75 mg) daily. 43.3 ± 10.5 respectively, p 250 seconds) was adjusted according to operator preference. The degree of LVEF was significantly greater in the RQ group and NQ group than in the PQ group [(47.5 ± 10.1 vs. Results: There were 502 (32%) patients with persistent Q waves (PQ group), 509 (33%) patients with Q wave regression (RQ group), and 542 (35%) patients with non-Q wave MI (NQ group). The study population was divided into three groups as the Q wave regression group, the Q wave persistent group, and the non-Q wave MI group. ECGs were recorded before and 90 min after PCI, as well as at hospitalization discharge and 12 months of follow-up. Patients and Methods: Standard 12-lead electrocardiograms (ECGs) were recorded in 1553 patients, who presented to our hospital with chest pain and underwent primary percutaneous coronary intervention (p-PCI) with the diagnosis of STEMI and were retrospectively analyzed. Our main objective was to assess the association of pathological Q wave evolution after reperfusion with clinical outcomes after ST-elevation myocardial infarction (STEMI). There are limited data regarding the association between Q wave regression and clinical outcomes. Introduction: Pathological Q waves are correlated with infarct size, and Q wave regression is associated with left ventricular ejection fraction improvement. Keywords: ST-elevation myocardial infarction Q wave regression primary percutaneous coronary intervention Abstract Zeki Şimşek, Sedat Kalkan, Regayip Zehir, Elnur AlizadeĬlinic of Cardiology, Kartal Koşuyolu High Specialization Training and Research Hospital, İstanbul, Türkiye Regression of Q Waves and Clinical Outcomes After Primary Percutaneous Coronary Intervention in St Elevation Myocardial Infarction
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