Brief ReportsTransesophageal echocardiographic evidence of more pronounced left atrial stunning after chemical (propafenone) rather than electrical attempts at cardioversion from atrial fibrillation
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Acknowledgements
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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2011, Journal of the American College of CardiologyCitation Excerpt :There is no evidence, however, that cardioversion followed by prolonged maintenance of sinus rhythm effectively reduces thromboembolism in AF patients. Conversion of AF to sinus rhythm results in transient mechanical dysfunction of the LA and LAA (417) known as “stunning,” which can occur after spontaneous, pharmacological (723,724), or electrical (724–726) conversion of AF or after radiofrequency catheter ablation of atrial flutter (226) and which may be associated with SEC (417). Recovery of mechanical function may be delayed for several weeks, depending in part on the duration of AF before conversion (191,727,728).
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