title: Unusual cause of wide complex tachycardia during coronary angiography.
abstract: We present a case of wide-complex tachycardia occurring during coronary angiography in a patient with a dual chamber pacemaker. This rhythm recurred only during coronary injection of contrast and appeared to be ventricular tachycardia. However, subsequent examination revealed the development of fusion beats followed by fully paced ventricular beats during coronary injection, which only mimicked a potentially dangerous arrhythmia.
authors.affiliation: Section of Cardiology, University of Illinios, Chicago, IL, USA. mmkansal@uic.edu
authors.forename: Mayank M
authors.initials: MM
authors.lastname: Kansal
authors.forename: Mladen I
authors.initials: MI
authors.lastname: Vidovich
mesh_terms: D000200:Action Potentials; D001919:Bradycardia / Q000503:physiopathology / Q000628:therapy; D002304:Cardiac Pacing, Artificial; D003287:Contrast Media / Q000008:administration & dosage / Q000009:adverse effects*; D017023:Coronary Angiography / Q000009:adverse effects*; D004562:Electrocardiography; D006329:Heart Conduction System / Q000187:drug effects* / Q000503:physiopathology; D006339:Heart Rate; D006801:Humans; D007472:Iohexol / Q000008:administration & dosage / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000139:chemically induced* / Q000503:physiopathology; D013997:Time Factors
chemical_list: D003287:Contrast Media; D007472:Iohexol