title: Pleomorphic Ventricular Tachycardias in Nonischemic Cardiomyopathy.
abstract: Compared to patients with prior myocardial infarction, mapping and ablation of ventricular tachycardia (VT) in nonischemic cardiomyopathy (NICM) patients represents a unique challenge, often with non-endocardial myocardial substrate, multiple VT morphologies, and higher incidence of arrhythmia recurrence post-ablation. Multi-modality imaging and detailed electroanatomic mapping demonstrated two predominant regional scar distributions: basal inferolateral and basal anteroseptal locations. Among the latter group, patients with predominantly septal scar pose a particularly difficult subset. Careful and systemic mapping is required to define the VT substrate. Aggressive ablations are often required from both sides of the septum to achieve arrhythmia control.
authors.affiliation: Cardiac Electrophysiology, University of California-San Francisco, San Francisco, CA, USA.
authors.forename: Babak
authors.initials: B
authors.lastname: Nazer
authors.affiliation: Cardiac Electrophysiology, University of California-San Francisco, San Francisco, CA, USA. Electronic address: henry.hsia@ucsf.edu.
authors.forename: Henry H
authors.initials: HH
authors.lastname: Hsia
mesh_terms: D000368:Aged; D009202:Cardiomyopathies / Q000150:complications*; D017115:Catheter Ablation; D002921:Cicatrix / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D017180:Tachycardia, Ventricular / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery
keywords: Catheter ablation; Mapping; Myocardial substrate; Nonischemic cardiomyopathy; Ventricular tachycardia