Abstract
Several investigators have documented the successful use of oral sustained-release theophylline in treating symptomatic bradycardia and sick sinus syndrome. This paper reports a case of chronotropic incompetence in which specific exercise indices, including the chronotropic response index, were used to measure the therapeutic efficacy of theophylline.
Publication types
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Case Reports
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Clinical Trial
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Review
MeSH terms
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Bradycardia / diagnosis
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Bradycardia / drug therapy*
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Bradycardia / physiopathology
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Delayed-Action Preparations
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Exercise Tolerance / drug effects*
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Heart Rate / drug effects*
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Humans
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Male
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Middle Aged
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Sick Sinus Syndrome / diagnosis
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Sick Sinus Syndrome / drug therapy*
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Sick Sinus Syndrome / physiopathology
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Theophylline / therapeutic use*
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Vasodilator Agents / therapeutic use*
Substances
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Delayed-Action Preparations
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Vasodilator Agents
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Theophylline