• Am. J. Cardiol. · Apr 1998

    Effect of atenolol or metoprolol on waking hour dynamics of the QT interval in myocardial infarction.

    • J P Singh, P Musialek, P Sleight, P Davey, M Marinho, and G Hart.
    • Department of Cardiovascular Medicine, John Radcliffe Hospital, University of Oxford, United Kingdom.
    • Am. J. Cardiol. 1998 Apr 1; 81 (7): 924-6.

    AbstractIn 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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