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Transesophageal echocardiographic evidence of more pronounced left atrial stunning after chemical (propafenone) rather than electrical attempts at cardioversion from atrial fibrillation

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In conclusion, our study shows that intravenous administration of propafenone can cause LA stunning before and regardless of whether sinus rhythm is restored. These results indicate that the potential for developing a thrombogenic environment does exist in patients undergoing chemical conversion, even when the procedure is unsuccessful.

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