Zipes, D P Interpretation and significance of supraventricular arrhythmia with abnormal QRS complex. [electronic resource] - The Nursing clinics of North America Sep 1972 - 491-508 p. digital Publication Type: Journal Article ISSN: 0029-6465 Subjects--Topical Terms: Arrhythmias, Cardiac--physiopathologyBundle-Branch Block--physiopathologyCardiac Complexes, Premature--physiopathologyElectrocardiographyHeart Block--physiopathologyHeart Conduction SystemHumansTachycardia--physiopathology