No abstract available
MeSH terms
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Adult
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Aged
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Arrhythmia, Sinus / physiopathology*
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Atropine / pharmacology
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Cardiac Pacing, Artificial
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Dose-Response Relationship, Drug
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Female
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Humans
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Isoproterenol / pharmacology
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Male
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Middle Aged
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Propranolol / pharmacology
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Sinoatrial Node / drug effects*
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Sinoatrial Node / physiology
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Sinoatrial Node / physiopathology
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Verapamil / pharmacology*
Substances
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Atropine
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Propranolol
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Verapamil
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Isoproterenol