- atriohisian tracts
- myocardial fibers that bypass the physiologic delay of the atrioventricular node and connect the atrium directly to the bundle of His, allowing preexcitation of the ventricle.
Medical dictionary. 2011.
atriohisian tracts
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accessory pathway — accessory conduction pathway myocardial fibers that propagate the atrial contraction impulse to the ventricles but are not a part of the normal atrioventricular conducting system; impulses conducted over such a pathway can cause preexcitation… … Medical dictionary
