Atypical Reasons for CRT Non-Response in a Pacing Induced Cardiomyopathy Patient.

Pacing induced cardiomyopathy is a known complication of high percent right ventricular (RV) pacing. When treated with cardiac resynchronization therapy (CRT), most patients experience recovery of Left Ventricular (LV) systolic function.A small percentage of patients do not respond due to a number of factors.This case examines the management of a 30-year-old patient with pacing induced cardiomyopathy who was found to be a CRT non responder despite optimalLV lead position and whose LV Ejection Fraction normalized followingRV lead revision.