title: Wide QRS tachycardia changing to a narrow QRS tachycardia. What is the mechanism?
authors: Department of Cardiology, U.N. Mehta I.C.R.C., Civil hospital campus, Asarwa, Ahmedabad, Gujarat, India. Electronic address: shomubohora@yahoo.com.
authors: Shomu
authors: S
authors: Bohora
mesh_terms: D002037:Bundle-Branch Block / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology; D003937:Diagnosis, Differential; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D005260:Female; D006801:Humans; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology
keywords: Atriofascicular bypass tract; Atrioventricular nodal reentrant tachycardia; Switching tachycardia