Symptomatic Trifascicular Block in Steinert’s Disease: Is It Too Soon for a Pacemaker?

Abstract

We report a case of a 62-year-old male with Steinert’s disease who presented with progressive intermittent episodes of lightheadedness five years after he was diagnosed with the disease. On evaluation, he developed a new onset trifascicular block (first degree atrioventricular block, new onset right bundle branch block, and left anterior fascicular block). A dual chamber pacemaker was inserted and lightheadedness improved significantly.