No abstract available
MeSH terms
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Aged, 80 and over
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Cardiac Pacing, Artificial / adverse effects*
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Electric Countershock
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Electrocardiography
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Equipment Failure
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Female
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Heart Block / physiopathology
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Heart Block / therapy*
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Heart Rate
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Humans
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Risk Factors
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Ventricular Fibrillation / etiology*
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Ventricular Fibrillation / therapy