during reciprocating tachycardia in patients with accessory atrioventricular pathways , the observation of changes in ventriculoatrial ( va ) intervals with bundle branch block ( bbb ) aberration has been used to localize the site of the pathway and prove the participation of the pathway in the tachycardia .
C0242514
reciprocating tachycardia
C0039231
tachycardia