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Medical Term:

fascicular block


a condition based on the disputed concept that the left branch of the bundle of His provides two of three major fascicles of a system of conduction, of which the right bundle branch constitutes the third, for the transmission of the cardiac impulse from the atrium above to the ventricles below the AV node; block may occur in any or all fascicles, all three together producing complete AV block.

See Also: hemiblock

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.