when compared with supraventricular tachycardia due to a-v nodal reentry , clinical findings suggestive of a concealed bypass tract included : ( 1 ) p wave following the qrs complex ( 12 of 12 versus 12 of 40 ) , ( 2 ) negative p wave in lead i during the tachycardia , and ( 3 ) bundle branch block aberration during the tachycardia ( 8 of 12 versus 3 of 40 ) .
C0039240
supraventricular tachycardia
C0039231
tachycardia