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Left versus right atrial difference in dominant frequency, K+ channel transcripts, and fibrosis in patients developing atrial fibrillation after cardiac surgery
Heart Rhythm, 09/28/09

Swartz MF et al. – This is the first demonstration of LA–to–RA frequency differences during postoperative AF, which are associated with LA–to–RA differences in mRNA levels for potassium channel proteins and LA fibrosis. These results strongly suggest that sources of AF after cardiac surgery are located in the LA and are stabilized by LA fibrosis.

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