TY - JOUR 
A1 - Cabrera Rodríguez, José Ángel
AU - Ho, Siew Yen
AU - Climent, Vicente
AU - Sánchez-Quintana, Damián
T1 - The architecture of the left lateral atrial wall: A particular anatomic region with implications for ablation of atrial fibrillation
Y1 - 2008
SN - 0195668X
UR - http://hdl.handle.net/11268/5412
AB - We examined the left lateral ridge (LLR) between the orifices of the left pulmonary veins and the left atrial appendage for a better understanding of its structural composition relevant to ablations for atrial fibrillation (AF). The LLR and its surrounding areas were studied in 40 heart specimens by dissection and histological sections. The LLR is a fold of the atrial wall with a mean width that was narrower superiorly than inferiorly (P , 0.001). Its myocardial thickness at the antero-superior level was thicker than at the postero-inferior level (2.8+1.1 vs. 1.7+0.8 mm, P , 0.001). Transmurally from subepicardium to subendocardium, the LLR comprises myofibres from the leftward extension of Bachmann’s bundle together with the inferior branches of the septopulmonary bundle and the septoatrial bundle. The vein or ligament of Marshall is located on the epicardial aspect of the LLR. The Marshall structures and autonomic nervous system are in close proximity (,3 mm) to the endocardial surface at the superior level of the ridge in 70% of specimens. The variability in width and thickness of the LLR, its proximity to Marshall structures and autonomic nerves, and myo- fibre arrangement may be significant in the fibrillatory process and spread of AF activity.
KW - Cardiología
KW - Anatomía humana
KW - Enfermedad cardiovascular
LA - eng
ER -