Key result
PVI reverses LBBB and improves LVEF to 57% in a tachycardia-induced cardiomyopathy case.
Case Report (n=1)
No
Catheter ablation for pulmonary vein isolation can reverse left bundle branch block and restore systolic function in patients with tachycardia-induced cardiomyopathy due to atrial fibrillation.
Suggests possible LBBB reversal after PVI in AF cardiomyopathy; hypothesis-generating and requires prospective confirmation before practice change.
A 61-year-old man was referred to our hospital with exertional dyspnea. Electrocardiography showed atrial fibrillation (AF) with a heart rate of 116 bpm and left bundle branch block (LBBB). Chest radiography demonstrated pulmonary congestion and cardiomegaly with a cardiothoracic ratio of 57%. Transthoracic echocardiography revealed a severely reduced left ventricular systolic function (ejection fraction: 32%), suggesting tachycardia-induced cardiomyopathy (TIC) due to AF. Following treatment for congestive heart failure and complete isolation of each pulmonary vein, the LBBB disappeared, with a complete recovery of the cardiac systolic function. This report describes a case of transient reversible LBBB associated with systolic dysfunction treated with catheter ablation.
No takes yet. Share an insight, caveat, or question.
Senoo et al. (2014) conducted a case report in Tachycardia-induced cardiomyopathy with persistent atrial fibrillation and left bundle branch block (n=1). Pulmonary vein isolation was evaluated on Reversal of left bundle branch block and recovery of left ventricular ejection fraction. Pulmonary vein isolation successfully reversed left bundle branch block and improved left ventricular ejection fraction from 32% to 57% in a patient with tachycardia-induced cardiomyopathy.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: