Masquerading Bundle Branch Block (MBBB)
Mixed pattern of RBBB in precordial leads and LBBB in limb leads, with a higher rate of progression to complete heart block than typical bifascicular block
Tag bilateral bundle branch block
Lenègre-Lev disease
Acquired fibrous degeneration of the left and right bundle branches, eventually manifesting as permanent complete atrioventricular (AV) dissociation with cardiac pauses and Adams-Stokes attacks