No abstract available
MeSH terms
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Adolescent
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Adult
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Aged
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Atropine
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Autonomic Nervous System / physiology*
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Bundle of His / physiology
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Cardiac Pacing, Artificial
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Electrocardiography / methods
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Female
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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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Parasympathetic Nervous System / physiology
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Propranolol
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Sick Sinus Syndrome / diagnosis
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Sick Sinus Syndrome / physiopathology
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Sinoatrial Node / physiology*
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Sympathetic Nervous System / physiology
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Vagus Nerve / physiology