This issue of the Cardiac Electrophysiology, edited by Dr. Masood Akhtar, will cover the physiological and pathological aspects of the His-Purkinje System in depth. This content will be supported by a variety of clinical cases that explore various aspects of and issues encountered involving the His-Purkinje System compliment the pathology and physiology.

This issue of the Cardiac Electrophysiology Clinics, edited by Drs. Amin Al- Ahmad and Francis Marchlinski, will cover Ventricular Tachycardia in Structural Heart Disease. Topics discussed in the issue include, but are not limited to, ECG localization of VT in patients with structural heart disease; Anatomy for VT ablation in structural heart disease; Ablation of VT in ischemic and non-ischemic heart disease; Pace mapping; Ablation of VT in ARVD; Epicardial VT ablation; and VT clinical trials, among others.

This issue of Cardiac Electrophysiology Clinics, edited by Drs. Luigi Padeletti and Giuseppe Bagliani, will cover the latest in Normal Electrophysiology, Substrates, and the Electrocardiographic Diagnosis of Cardiac Arrhythmias. Topics covered in this issue include History of Arrhythmias; P wave and arrhythmias originating in the atria; PQ interval and Junctional zone; QRS complex; Ventricular repolarization during arrhythmias; Classification and specific electrocardiographic pattern of Cardiac Arrhythmias; and Electrocardiographic practice of cardiac arrhythmias.

In this issue, guest editors bring their considerable expertise to this important topic.Provides in-depth reviews on the latest updates in the field, providing actionable insights for clinical practice. Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create these timely topic-based reviews.

This issue of Cardiac Electrophysiology Clinics, edited by Drs. Ravi Mandapati, Kalyanam Shivkumar, and Seshadri Balaji, will cover the latest in Cardiac Arrhythmias in Adults with Congenital Heart Disease. Topics covered in this issue include, but are not limited to Brady arrhythmia; Supraventricular Tachycardia in Adult Congenital Heart Disease; Atrial defects, Ebsteins; Drug therapy; Devices; and Surgery.

In this issue of Cardiac Electrophysiology Clinics, guest editors Drs. Kenneth A. Ellenbogen, Pugazhendhi Vijayaraman, and Santosh Padala bring their considerable expertise to the topic of Advances in Physiologic Pacing (such as dual-chamber (DDD and DDDR) and atrium-based pacing (AAI and AAIR) in contrast to ventricle-based pacing (VVI and VVIR). Top experts in the field cover key topics such as what we have learned from computer modeling of hemodynamics and LV pacing; troubleshooting the pacemaker EKG in patients with conduction system pacing; what intracardiac tracings have taught us about LBBB; multisite pacing in CRT; and more. - Contains 20 relevant, practice-oriented topics including basic principles of hemodynamics during pacing; pacing optimized by dP/dt; optimization of CRT: Q-LV; programming algorithms for CRT; and more. - Provides in-depth clinical reviews on physiologic pacing, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.

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, guest edited by Mohammad Shenasa and Amin Al-Ahmad, is the second part of ourAdvances in Cardiac Mapping and Catheter Ablation issue. Article topics will include, but are not limited to,New Findings in Atrial Fibrillation Mechanisms; Mapping and Ablation of Neuraxial in Patients with Ventricular Arrhythmias; How to Map and Ablate Rotors in Atrial Fibrillation; Post-ablation Atrial Arrhythmias; Substrate Mapping in Atrial Arrhythmias; Substrate Mapping in Ventricular Arrhythmias; Challenges in Ablation of Complex Congenital Heart Disease; Mapping and Ablation of Ventricular Arrhythmias from the RV and LV Outflow Tract; Novel Insights on Idiopathic VF and Early Repolarization; Novel Observations in Mapping and Ablation in Brugada Syndrome; Ablations of Ventricular Arrhythmias; Mapping and Ablation of Arrhythmias from uncommon sites; Mapping and Ablation of VT in Patients with HF and Cardiomyopathies; Mapping and Ablation of Unmappable VT, VT Storm, and Those in Acute Myocardial Infarction; Mapping and Ablation of Ventricle Arrhythmia in patients of LVAD; Fluoroless Catheter Ablation of Cardiac Arrhythmias; Toward a Uniform Ablation Protocol for Paroxysmal; Persistent and Permanent AF; and The Ideal Mapping System.

In this issue of Cardiac Electrophysiology Clinics, guest editors Auras R. Atreya and Calambur Narasimhan bring their considerable expertise to the topic of Ventricular Tachycardia Ablation. - Provides in-depth reviews on the latest updates in Ventricular Tachycardia Ablation, providing actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field; Authors synthesize and distill the latest research and practice guidelines to create these timely topic-based reviews.

This issue of Cardiac Electrophysiology Clinics, edited by Drs. Pramod Deshmukh and Kenneth A. Ellenbogen, will focus on His Bundle Pacing. Topics include, but are not limited to, Bundle of His – A contemporary reappraisal, Electrophysiology of bundle branch block, Pacing-induced cardiomyopathy, Tricuspid valve dysfunction caused by RV leads, His Bundle Pacing – concept to reality, How to perform HBP - Tools and techniques, Electro-anatomical atlas of HBP (LAO/RAO views & recorded Egms), Hemodynamics of His bundle pacing in comparison Apical & Septal pacing, HBP for cardiac resynchronization, Long-term results of HBP, Getting on the curve – learning HBP, HBP in conjunction with AV node ablation in AF, and Ongoing clinical trials and future developments.