A 75-year-old woman with situs inversus totalis, dextrocardia, a patent foramen ovale (PFO), and a double-chamber right ventricle with subpulmonic outflow obstruction presented with highly symptomatic ...
In some patients with diseased conduction system or cardiomyopathy with ventricular remodeling it may be very difficult to record a stable His potential and a left-sided ablation may be necessary.