This issue of Cardiac Electrophysiology Clinics examines Frontiers in Non-invasive Cardiac Mapping. Topics include imaging of heart rhythm disorders, experimental validation and modeling of validation, challenges and future directions of inverse problems, phase mapping of cardiac fibrillation, frequency domain analysis, analysis of diagnostic 12-lead electrocardiography and 3D non-invasive mapping, and many more.

This issue of Cardiac Electrophysiology Clinics examines electrocardiography of complex arrhythmias. Topics include concealed conduction, right and left atrial macroreentrant tachycardias, focal atrial fachycardias, AV nodal and AV reentrant tachycardia, wide complex tachycardias, ventricular tachycardia in CAD, ECG characteristics of outflow tract VT, fascicular tachycardias, VT in non-ischemic dilated cardiomyopathy, VT originating from unusual sites, incessant VT and VT storms, ECG characteristics of TdP, VT in ARVC, and ventricular arrhythmia in inherited channelopathies, arrrhythmias in complex congenital heart disease, AV conduction disease and block, electrocardiographic analysis of paced rhythms.

This issue of Cardiac Electrophysiology Clinics examines Arrhythmias in Cardiomyopathies. Articles include Atrial and Ventricular Arrhythmias in Hypertrophic Cardiomyopathy and Its Variants; Role of Cardiac MRI in Risk Stratification of Hypertrophic Cardiomyopathy; Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy; Exercise-Induced Right Ventricular Cardiomyopathy; Dilated Cardiomyopathy; Sarcoidosis; Amyloidosis; Chagas Disease; Fabry Disease; Left Ventricular Hypertrophy: Ventricular Arrhythmias and SCD; Left Ventricular Non-compaction; Mitochondrial Cardiomyopathy and Related Arrhythmias; Arrhythmias in Viral Myocarditis and Pericarditis Cardiomyopathy; Takotsubo Cardiomyopathy; Post-partum Cardiomyopathy; Arrhythmias in Alcohol- and Drug-Associated Cardiomyopathies; Arrhythmias in Neuromuscular Dystrophies; Cardiomyopathies Related to Anti-cancer Therapy– and Radiation- Induced Heart Disease; Arrhythmias After Myocardial Stem Cell Therapy; and more.

The sodium channel, a ubiquitous member of the cardiac, neural, and muscular conduction systems, has been implicated in the pathogenesis of an array of human diseases. Mutations associated with the cardiac sodium channel are responsible for a wide spectrum of disorders. The cardiac sodium channel and associated disorders are comprehensively examined in this issues of the Cardiac Electrophysiology Clinics.

Controversies in Cardiac Electrophysiology are examined in this issue of Cardiac Electrophysiology Clinics. Difficult cases are presented and esteemed leaders in the field debate the pros and cons of various forms of management and treatment.

This book constitutes the refereed proceedings of the 9th International Conference on Functional Imaging and Modeling of the Heart, held in Toronto, ON, Canada, in June 2017. The 48 revised full papers were carefully reviewed and selected from 63 submissions. The focus of the papers is on following topics: novel imaging and analysis methods for myocardial tissue characterization and remodeling; advanced cardiac image analysis tools for diagnostic and interventions; electrophysiology: mapping and biophysical modeling; biomechanics and flow: modeling and tissue property measurements.

The latest developments in the field of Cardiac Resynchronization Therapy are featured in this issue of Cardiac Electrophysiology Clinics. The issue includes more than 20 articles in the following areas: heart failure; cost of heart failure; ventricular dissynchrony and resynchronization; assessment of dissynchrony; indication for CRT implantation; implantation technique; measures to improve CRT benefit on AF patients; and many more.