Ventricular arrhythmias are associated with increased QT interval and QRS dispersion in patients with ST-elevation myocardial infarction
Publicado por Elsevier España, S.L.U..
INTRODUCTION AND OBJECTIVES: The electrocardiogram continues to be essential in the diagnosis of acute myocardial infarction, and a useful tool in arrhythmic risk stratification. We aimed to determine which electrocardiographic variables can successfully predict the occurrence of ventricular arrhythmias (VA) in patients following ST-segment elevation myocardial infarction (STEMI).
METHODS: We performed an observational study including 667 patients with STEMI admitted to the University Hospital in Sancti Spíritus, Cuba. Demographic variables, cardiovascular risk factors, and clinical variables were recorded. Electrocardiographic variables included QT interval duration (measured and corrected) and QT dispersion, QRS duration and dispersion, JT interval duration and ST-segment elevation magnitude. We also determined left ventricular ejection fraction and glomerular filtration rate. A binary statistical regression model and a regression tree were used to determine the variables that successfully predicted VA.
RESULTS: VA occurred in 92 (13.8%) patients, within the first 48 hours in 68 (73.9%) and after this period in 24 (26.1%) patients. The variables associated with VA were QT interval duration >529 ms and QT dispersion >66 ms, QRS dispersion >50 ms, and the presence of ST-segment elevation in six or more leads.
CONCLUSIONS: The main predictor of VA occurring during the initial 48 hours was QT interval duration, while, after this period, it was QRS dispersion.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:41 |
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| Enthalten in: |
Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology - 41(2022), 5 vom: 04. Mai, Seite 395-404 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chávez-González, Elibet [VerfasserIn] |
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| Links: |
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| Themen: |
Avaliação do risco |
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| Anmerkungen: |
Date Revised 07.09.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.repc.2021.03.015 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM345798503 |
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| 245 | 1 | 0 | |a Ventricular arrhythmias are associated with increased QT interval and QRS dispersion in patients with ST-elevation myocardial infarction |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Publicado por Elsevier España, S.L.U. | ||
| 520 | |a INTRODUCTION AND OBJECTIVES: The electrocardiogram continues to be essential in the diagnosis of acute myocardial infarction, and a useful tool in arrhythmic risk stratification. We aimed to determine which electrocardiographic variables can successfully predict the occurrence of ventricular arrhythmias (VA) in patients following ST-segment elevation myocardial infarction (STEMI) | ||
| 520 | |a METHODS: We performed an observational study including 667 patients with STEMI admitted to the University Hospital in Sancti Spíritus, Cuba. Demographic variables, cardiovascular risk factors, and clinical variables were recorded. Electrocardiographic variables included QT interval duration (measured and corrected) and QT dispersion, QRS duration and dispersion, JT interval duration and ST-segment elevation magnitude. We also determined left ventricular ejection fraction and glomerular filtration rate. A binary statistical regression model and a regression tree were used to determine the variables that successfully predicted VA | ||
| 520 | |a RESULTS: VA occurred in 92 (13.8%) patients, within the first 48 hours in 68 (73.9%) and after this period in 24 (26.1%) patients. The variables associated with VA were QT interval duration >529 ms and QT dispersion >66 ms, QRS dispersion >50 ms, and the presence of ST-segment elevation in six or more leads | ||
| 520 | |a CONCLUSIONS: The main predictor of VA occurring during the initial 48 hours was QT interval duration, while, after this period, it was QRS dispersion | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Avaliação do risco | |
| 650 | 4 | |a Dispersão do QRS | |
| 650 | 4 | |a Enfarte do miocárdio | |
| 650 | 4 | |a Intervalo QT | |
| 650 | 4 | |a Myocardial infarction | |
| 650 | 4 | |a QRS dispersion | |
| 650 | 4 | |a QT interval | |
| 650 | 4 | |a Risk assessment | |
| 700 | 1 | |a Rodríguez-Jiménez, Ailed Elena |e verfasserin |4 aut | |
| 700 | 1 | |a Ferrer-Rodríguez, Carlos Javier |e verfasserin |4 aut | |
| 700 | 1 | |a Donoiu, Ionut |e verfasserin |4 aut | |
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