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- W3119546089 abstract "Background The distribution and connection of ventricular Purkinje fibers are known to be associated with idiopathic left ventricular arrhythmias. Unusual anatomy is one of the important factors associated with catheter ablation success rate. With the widefield high-speed, swept-source optical coherence microscopy (OCM) and light microscope, we visualized the left ventricular Purkinje fiber distribution. Methods Left ventricular walls of five adult ovine hearts were incised from the mitral annulus to the apex. Using the widefield OCM technique and light microscopy, we observed the distribution, direction, depth, and dividing patterns of the Purkinje network with multiple tangential angles and without tissue destruction. Results Widefield OCM was used to characterize the ovine heart Purkinje network system in a 4 × 4 mm2 field. Left ventricular Purkinje fibers traveled in the sub-endocardial area near the left-sided peri-membranous septal area and ran like a wide hair bundle. The distal branching fibers penetrated to the endocardium and connected to the contractile muscle. In this distal area, Purkinje fibers were connected to each other, forming multiple layers. Some Purkinje fibers were directly connected within the false tendon between the papillary muscles or between the trabeculations. Some free-running Purkinje fibers were directly connected to the papillary muscle from the left bundle. Conclusion Using widefield OCM, we were able to observe the left bundle and its branching patterns in ovine left ventricle without tissue destruction. This might be applied to future cardiac ablation procedures." @default.
- W3119546089 created "2021-01-18" @default.
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- W3119546089 date "2020-12-01" @default.
- W3119546089 modified "2023-09-23" @default.
- W3119546089 title "Visualization of left ventricular Purkinje fiber distribution using widefield optical coherence microscopy." @default.
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- W3119546089 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7791375" @default.
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