Key result
Post-mortem histological analysis of the mitral isthmus (length 35+/-7 mm) revealed a ramus circumflexus <5 mm from the endocardium in 60% of superior sections, potentially complicating ablation.
Population
16 post-mortem patients with normal left atria
Design
Other
Authors
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May complicate mitral isthmus ablation via circumflex proximity; leaves open optimal imaging or technique modifications.
Observational (n=16)
Anatomical features such as myocardial thickness, proximity of the circumflex artery, and local cooling by vessels may complicate achieving conduction block at the mitral isthmus during atrial fibrillation ablation.
Wittkampf et al. (2005) conducted an observational in Normal left atria (n=16). Histological analysis of the mitral isthmus was evaluated on Anatomical characteristics of the mitral isthmus area to determine optimal lesion line location. Post-mortem histological analysis of the mitral isthmus (length 35+/-7 mm) revealed a ramus circumflexus <5 mm from the endocardium in 60% of superior sections, potentially complicating ablation.
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