Abstract
We studied left atrial function in 55 patients undergoing electrical (n = 23) or chemical (intravenous administration of propafenone, n = 32) attempts at cardioversion from atrial fibrillation. Chemical attempts at cardioversion revealed a significant increase in spontaneous echo contrast and a significant decrease in left atrial appendage Doppler flow, even in patients who did not have successful conversion to sinus rhythm.
MeSH terms
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Adult
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Aged
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Anti-Arrhythmia Agents / administration & dosage
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Anti-Arrhythmia Agents / adverse effects*
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Atrial Fibrillation / diagnostic imaging
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Atrial Fibrillation / therapy*
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Blood Flow Velocity / drug effects
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Echocardiography, Doppler
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Echocardiography, Transesophageal*
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Electric Countershock*
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Female
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Humans
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Infusions, Intravenous
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Male
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Middle Aged
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Myocardial Stunning / chemically induced*
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Myocardial Stunning / diagnostic imaging
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Propafenone / administration & dosage
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Propafenone / adverse effects*
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Thrombosis / chemically induced
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Thrombosis / diagnostic imaging
Substances
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Anti-Arrhythmia Agents
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Propafenone