Increase in ventricular tachycardia frequency after biventricular implantable cardioverter defibrillator upgrade.
We report the case of a patient in whom transvenous left ventricular pacing lead placement at the time of a biventricular upgrade led to an exacerbation of clinical monomorphic ventricular tachycardia (MVT). At implant, slow left ventricular pacing repeatedly induced sustained MVT. However, testing of the biventricular pacing showed no MVT inducibility, and the system was implanted. The patient was readmitted due to multiple episodes of the MVT observed at implant. The MVT was controlled with pharmacotherapy, allowing the patient to continue with biventricular pacing.
Guerra
Jose M
JM
Cardiovascular Division, Department of Medicine, Krannert Institute of Cardiology, Indiana University School of Medicine, 1800 N. Capitol Avenue, Indianapolis, IN 46202, USA.
Wu
Jianyi
J
Miller
John M
JM
Groh
William J
WJ
D000638:Amiodarone / Q000627:therapeutic use; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects* / Q000379:methods*; D017147:Defibrillators, Implantable / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017180:Tachycardia, Ventricular / Q000188:drug therapy / Q000209:etiology* / Q000628:therapy*; D017211:Treatment Failure
D000889:Anti-Arrhythmia Agents; D000638:Amiodarone