CT-Derived Left Atrial Wall Thickness Does Not Correlate with Bipolar Voltage in AF

CT-derived left atrial wall thickness (mean 1.45 mm) did not correlate with bipolar voltage (r=-0.018) in 60 AF patients. Persistent AF had larger left atrial volume (119 vs 102 mL, p=0.024) and a trend toward thicker walls, suggesting complementary structural info.

• The lack of meaningful correlation (r=-0.018) persisted across all five left atrial regions and both AF phenotypes.
• No clinical factors were significantly associated with global LAWT, though heart failure and persistent AF showed a trend toward greater wall thickness.

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