Effect of atenolol or metoprolol on waking hour dynamics of the QT interval in myocardial infarction |
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| Authors: | JP Singh P Musialek P Sleight P Davey M Marinho G Hart |
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| Affiliation: | Department of Cardiovascular Medicine, John Radcliffe Hospital, University of Oxford, United Kingdom. |
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| Abstract: | In subjects with a recent acute myocardial infarction, the hour immediately following awakening is associated with an abrupt exaggeration of heart rate-dependent changes and variability of the QT interval. Beta blockers were observed to blunt these waking hour changes. |
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