Mechanical compression by extracardiac structures like the ascending aorta may contribute to the development of low-voltage zones associated with atrial fibrillation.
Deviation of the ascending aorta's course and distention of the NCC appear to be related to the development of LA anterior wall LVZs in the LA-ascending aorta contact area. Mechanical pressure exerted by extracardiac structures on the LA along with the limited thoracic space may contribute to the development of LVZs associated with AF.
Hayashida et al. (Mon,) studied this question.
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