Spectrum of Ventricular Arrhythmias Arising from Papillary Muscle in the Structurally Normal Heart

摘要

Ventricular arrhythmias arising from the papillary muscle account for 4% to 12% of arrhythmias in a structurally normal heart and are generally non-life threatening. Although distinguishing arrhythmias from papillary muscle and Purkinje tissue is challenging, an attempt should be made because the techniques used in ablation are different.,Ablation assisted by real-time imaging modalities still has a variable success rate. Malignant arrhythmias related to the papillary muscle may be secondary to focal ectopy triggering ventricular fibrillation.