Images in cardiovascular medicine Evidence of a concealed accessory pathway during a tachycardia with three QRS morphologies and cycle length variations related to functional bundle branch block

Giuseppe Bagliani; Jorge A. Salerno-Uriarte; Luigi Balducci; Roberto De Ponti

Images in cardiovascular medicine Evidence of a concealed accessory pathway during a tachycardia with three QRS morphologies and cycle length variations related to functional bundle branch block