Up to one-third of patients who undergo cardiac resynchronization therapy do not obtain clinical benefit. A systematic approach can identify treatable causes in many nonresponding patients. We present a case of nonresponse to cardiac resynchronization therapy that resolved by ablation of the atrioventricular node in a patient with complete atrioventricular block. (Level of Difficulty: Advanced.).
Keywords: AV, atrioventricular; CRT, cardiac resynchronization therapy; PMT, pacemaker-mediated tachycardia; PVARP, post-ventricular atrial refractory period; ablation; cardiac resynchronization therapy; echocardiography.
© 2021 The Authors.