Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction
Background: QT interval parameters have been suggested as a predictor of lethal arrhythmia and mortality in patients with myocardial infarction. The aim of the present study was to compare the value of QT interval indices in patients presenting with non-ST-segment elevation myocardial infarction (N...
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Tehran University of Medical Sciences
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doaj-bc2b686b7ffc44908b0b9bf6697935b62020-11-25T04:05:26ZengTehran University of Medical SciencesJournal of Tehran University Heart Center1735-86202008-23712015-10-0194347Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial InfarctionHamidReza Bonakdar0Masoumeh Aslanpour1Hassan Moladoust2Parham Sadeghipour3Fereshteh Mohamadi4Mohammad AssadianRad5Jalal Kheirkhah6Heshmat Cardiovascular Medical Center, Guilan University of Medical Sciences, Rasht, Iran.Heshmat Cardiovascular Medical Center, Guilan University of Medical Sciences, Rasht, Iran.Cardiovascular Research Center, Guilan University of Medical Sciences, Rasht, Iran.Heshmat Cardiovascular Medical Center, Guilan University of Medical Sciences, Rasht, Iran.Razi General Hospital, Guilan University of Medical Sciences, Rasht, Iran.Heshmat Cardiovascular Medical Center, Guilan University of Medical Sciences, Rasht, Iran.Heshmat Cardiovascular Medical Center, Guilan University of Medical Sciences, Rasht, Iran. Background: QT interval parameters have been suggested as a predictor of lethal arrhythmia and mortality in patients with myocardial infarction. The aim of the present study was to compare the value of QT interval indices in patients presenting with non-ST-segment elevation myocardial infarction (NSTEMI) between a group of patients with type 2 diabetes mellitus and a nondiabetic group of patients. Methods: This case-control study evaluated QT interval parameters in 115 patients (47 diabetic and 68 nondiabetic patients) diagnosed with NSTEMI between September 2011 and July 2012. The following QT interval indices were analyzed: maximum (max) and minimum (min) QT interval; max and min corrected QT interval (QTc); QT dispersion (QTd); and corrected QT dispersion (QTcd). All the patients were observed for ventricular arrhythmia during their hospital course and underwent coronary angiography. They were selected to undergo coronary artery bypass surgery (CABG) or percutaneous coronary angioplasty (PCI) based on their coronary anatomy. Results: The mean age of the patients was 60.8 ± 11.4 years. The patients were 40.0% female and 60.0% male. There were no significant differences in clinical characters between type 2 diabetic and nondiabetic patients with NSTEMI. Compared with post-myocardial infarction patients without diabetes, those with type 2 diabetes had higher QTc max , QTd and QTcd (p value < 0.05). There was a significant difference in QTd and QTcd in the patients needing coronary revascularization with diabetes as opposed to the nondiabetics (p value = 0.035 and p value = 0.025, respectively) as well as those who had ventricular arrhythmia with diabetes (p value = 0.018 and p value = 0.003, respectively). QTcd was higher in the patients who had higher in-hospital mortality (p value = 0.047). The QTc max, QTd and QTcd were significantly (all p values < 0.05) associated with ventricular arrhythmia, QTcd with need for revascularization and QTc max with in-hospital mortality in the diabetic patients. Conclusion: Based on the findings of this study, it seems that type 2 diabetics with NSTEMI have greater QTc max, QTd, and QTcd and these QT parameters may have a relationship with worse cardiac outcomes and poorer prognoses. https://jthc.tums.ac.ir/index.php/jthc/article/view/351Myocardial infarction • Diabetes mellitustype 2 • Electrocardiography |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
HamidReza Bonakdar Masoumeh Aslanpour Hassan Moladoust Parham Sadeghipour Fereshteh Mohamadi Mohammad AssadianRad Jalal Kheirkhah |
spellingShingle |
HamidReza Bonakdar Masoumeh Aslanpour Hassan Moladoust Parham Sadeghipour Fereshteh Mohamadi Mohammad AssadianRad Jalal Kheirkhah Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction Journal of Tehran University Heart Center Myocardial infarction • Diabetes mellitus type 2 • Electrocardiography |
author_facet |
HamidReza Bonakdar Masoumeh Aslanpour Hassan Moladoust Parham Sadeghipour Fereshteh Mohamadi Mohammad AssadianRad Jalal Kheirkhah |
author_sort |
HamidReza Bonakdar |
title |
Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction |
title_short |
Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction |
title_full |
Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction |
title_fullStr |
Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction |
title_full_unstemmed |
Comparison between QT Interval Parameters in Type 2 Diabetic and Nondiabetic Patients with Non-ST Elevation Myocardial Infarction |
title_sort |
comparison between qt interval parameters in type 2 diabetic and nondiabetic patients with non-st elevation myocardial infarction |
publisher |
Tehran University of Medical Sciences |
series |
Journal of Tehran University Heart Center |
issn |
1735-8620 2008-2371 |
publishDate |
2015-10-01 |
description |
Background: QT interval parameters have been suggested as a predictor of lethal arrhythmia and mortality in patients with myocardial infarction. The aim of the present study was to compare the value of QT interval indices in patients presenting with non-ST-segment elevation myocardial infarction (NSTEMI) between a group of patients with type 2 diabetes mellitus and a nondiabetic group of patients.
Methods: This case-control study evaluated QT interval parameters in 115 patients (47 diabetic and 68 nondiabetic patients) diagnosed with NSTEMI between September 2011 and July 2012. The following QT interval indices were analyzed: maximum (max) and minimum (min) QT interval; max and min corrected QT interval (QTc); QT dispersion (QTd); and corrected QT dispersion (QTcd). All the patients were observed for ventricular arrhythmia during their hospital course and underwent coronary angiography. They were selected to undergo coronary artery bypass surgery (CABG) or percutaneous coronary angioplasty (PCI) based on their coronary anatomy.
Results: The mean age of the patients was 60.8 ± 11.4 years. The patients were 40.0% female and 60.0% male. There were no significant differences in clinical characters between type 2 diabetic and nondiabetic patients with NSTEMI. Compared with post-myocardial infarction patients without diabetes, those with type 2 diabetes had higher QTc max , QTd and QTcd (p value < 0.05). There was a significant difference in QTd and QTcd in the patients needing coronary revascularization with diabetes as opposed to the nondiabetics (p value = 0.035 and p value = 0.025, respectively) as well as those who had ventricular arrhythmia with diabetes (p value = 0.018 and p value = 0.003, respectively). QTcd was higher in the patients who had higher in-hospital mortality (p value = 0.047). The QTc max, QTd and QTcd were significantly (all p values < 0.05) associated with ventricular arrhythmia, QTcd with need for revascularization and QTc max with in-hospital mortality in the diabetic patients.
Conclusion: Based on the findings of this study, it seems that type 2 diabetics with NSTEMI have greater QTc max, QTd, and QTcd and these QT parameters may have a relationship with worse cardiac outcomes and poorer prognoses.
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topic |
Myocardial infarction • Diabetes mellitus type 2 • Electrocardiography |
url |
https://jthc.tums.ac.ir/index.php/jthc/article/view/351 |
work_keys_str_mv |
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