
Keywords: AH; atrial-His interval; AT; atrial tachycardia; AV; atrioventricular; AVNRT; atrioventricular nodal reentrant tachycardia; AVRT; atrioventricular reciprocating tachycardia; BBB; bundle branch block; H-H; His-His; IRBBB; incomplete right bundle branch blo