A Novel pacing option in patients with Right ventricular Endomyocardial
Fibrosis: Report of 2 cases
Abstract
Introduction: Endomyocardial fibrosis (EMF) is characterized by patchy
fibrotic thickening of the endocardial and myocardial layers of the
heart. Although Sinus node dysfunction and tachyarrhythmia - atrial
fibrillation, ventricular tachycardia, have been commonly reported,
complete heart block complicating EMF is rare. Transvenous pacing is
technically limited by fibrotic obliteration of the affected ventricle
that results in poor lead parameters, and alternative pacing strategy
like epicardial pacing may be required in many. Methods and Results: We
present two cases of EMF with complete heart block that were managed by
left ventricular pacing through the coronary sinus. Conclusion: EMF
provides unique challenges to endocardial pacing. Transvenous epicardial
pacing through CS tributary using an LV lead can provide a safe and
effective alternative mode of pacing with optimal long-term pacing
outcome.