Adem Bekler1, Emine Gazi2, Gökhan Erbağ3, Tezcan Peker4, Ahmet Barutçu2, Burak Altun2, Ahmet Temiz2, Mustafa Yılmaz2. 1. Department of Cardiology, Çanakkale Onsekiz Mart University Faculty of Medicine, Çanakkale, Turkey. adembekler27@gmail.com. 2. Department of Cardiology, Çanakkale Onsekiz Mart University Faculty of Medicine, Çanakkale, Turkey. 3. Department of Internal Medicine, Çanakkale Onsekiz Mart University Faculty of Medicine, Çanakkale, Turkey. 4. Department of Cardiology, Bursa Yüksek Ihtisas Training and Research Hospital, Bursa.
Abstract
OBJECTIVES: Fragmented QRS (fQRS) as a predictor of cardiac events in coronary artery disease has previously been reported. In this study, we hypothesized that presence of fQRS on a 12-lead electrocardiogram (ECG) on admission would be predictive of adverse outcomes in non-ST elevated myocardial infarction (NSTEMI). STUDY DESIGN: A total of 149 NSTEMI patients (112 male, 37 female) were retrospectively analyzed. The fQRS pattern was defined as the presence of an additional R', notching in the nadir of the S wave, fragmentation of the RS or QS complexes in 2 contiguous leads corresponding to a major coronary artery territory. The relationship between presence of fQRS on admission on a 12-lead ECG, and primary end points [cardiovascular death (CVD)] and secondary end points (re-infarction, repeat target vessel revascularization [percutaneous/surgical]) were assessed. The median follow-up time was 18 (13-24) months. RESULTS: Other than age, there were no significant differences in baseline characteristics and laboratory findings for patients in the fQRS and non-fQRS groups. The patients in the fQRS group were older [64 years vs 59 years, p=0.048]. CVD and re-infarction were significantly higher in the fQRS group in the median 18-month follow-up (26.1% vs 8.7%, p=0.005; 23.9% vs 10.7%, p=0.035, respectively). By a multivariate regression analysis in all 149 patients, age ≥65 years and the presence of fQRS in a 12-lead ECG on admission were found to be powerful independent predictors of cardiovascular mortality (HR: 4.91, 95% CI: 1.60-15.03, p=0.005; HR: 2.77, 95% CI: 1.02-7.50, p=0.044, respectively). CONCLUSION: Presence of fQRS on a 12-lead ECG on admission is associated with increased long-term mortality in patients with NSTEMI.
OBJECTIVES: Fragmented QRS (fQRS) as a predictor of cardiac events in coronary artery disease has previously been reported. In this study, we hypothesized that presence of fQRS on a 12-lead electrocardiogram (ECG) on admission would be predictive of adverse outcomes in non-ST elevated myocardial infarction (NSTEMI). STUDY DESIGN: A total of 149 NSTEMI patients (112 male, 37 female) were retrospectively analyzed. The fQRS pattern was defined as the presence of an additional R', notching in the nadir of the S wave, fragmentation of the RS or QS complexes in 2 contiguous leads corresponding to a major coronary artery territory. The relationship between presence of fQRS on admission on a 12-lead ECG, and primary end points [cardiovascular death (CVD)] and secondary end points (re-infarction, repeat target vessel revascularization [percutaneous/surgical]) were assessed. The median follow-up time was 18 (13-24) months. RESULTS: Other than age, there were no significant differences in baseline characteristics and laboratory findings for patients in the fQRS and non-fQRS groups. The patients in the fQRS group were older [64 years vs 59 years, p=0.048]. CVD and re-infarction were significantly higher in the fQRS group in the median 18-month follow-up (26.1% vs 8.7%, p=0.005; 23.9% vs 10.7%, p=0.035, respectively). By a multivariate regression analysis in all 149 patients, age ≥65 years and the presence of fQRS in a 12-lead ECG on admission were found to be powerful independent predictors of cardiovascular mortality (HR: 4.91, 95% CI: 1.60-15.03, p=0.005; HR: 2.77, 95% CI: 1.02-7.50, p=0.044, respectively). CONCLUSION: Presence of fQRS on a 12-lead ECG on admission is associated with increased long-term mortality in patients with NSTEMI.
Authors: Barış Güngör; Kazım S Özcan; Mehmet B Karataş; İrfan Şahin; Recep Öztürk; Osman Bolca Journal: Ann Noninvasive Electrocardiol Date: 2016-08-16 Impact factor: 1.468
Authors: Barış Güngör; Kazım Serhan Özcan; Mehmet Baran Karataş; İrfan Şahin; Recep Öztürk; Osman Bolca Journal: Ann Noninvasive Electrocardiol Date: 2016-03-28 Impact factor: 1.468