title: A case of 'Masquerading' bundle branch block: a forgotten concept.
abstract: 'Masquerading' bundle branch block (right bundle branch block in the precordial leads with left bundle branch block in frontal leads and left axis deviation) is seen most commonly with coronary artery disease and hypertension. No definite explanation is available so far for these changes. We are presenting a case of rare congenital intranuclear inclusion myopathy with congestive heart failure and 'Masquerading' bundle branch block in ECG.
authors.affiliation: Fellow in Cardiac Electrophysiology, Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Thiruvananthapuram 695 011, India. Electronic address: drdineshchoudhary8@gmail.com.
authors.forename: Dinesh
authors.initials: D
authors.lastname: Choudhary
authors.affiliation: Associate Professor, Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Thiruvananthapuram, India.
authors.forename: Narayanan
authors.initials: N
authors.lastname: Namboodiri
authors.affiliation: Professor & Head, Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), Thiruvananthapuram, India.
authors.forename: Jaganmohan A
authors.initials: JA
authors.lastname: Tharakan
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis*; D009202:Cardiomyopathies / Q000151:congenital / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004452:Echocardiography / Q000379:methods; D004562:Electrocardiography; D006333:Heart Failure / Q000175:diagnosis*; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods; D008297:Male; D055815:Young Adult
keywords: Left axis deviation; Left bundle branch block; Myopathy; Right bundle branch block; ‘Masquerading’ bundle branch block