This issue of Cardiac Electrophysiology Clinics--edited by Drs. Amin Al-Ahmad, Raymond Yee, and Mark Link--will focus on Contemporary Issues in Patients with Implantable Devices. Topics include, but are not limited to: Management of Device infections; Device longevity; Inappropriate ICD therapies; ILR for cryptogenic stroke; ICD implantation without DFT testing; S-ICD; Lead extraction; Use of the WCD as a bridge to ICD; Important parameters for ICD selection; Leadless pacemakers; Management of perioperative anticoagulation for device implantation; HIS bundle pacing; Single coil ICD leads; Venous system interventions for device implantation; and Remote monitoring.

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.

Implantable cardioverter-defibrillators (ICDs) are electronic devices installed in the chest to prevent sudden death caused by abnormally fast heart rhythms. Cardiac electrophysiologists are the physicians usually responsible for implanting and maintaining these devices.? The technology for ICDs is rapidly evolving, and the articles in this issue will help electrophysiologists to keep up to date with the current generation of ICDs, including selection of patients who are appropriate for the device, monitoring patients after the device is implanted, and troubleshooting problems with the device.

In the rapidly evolving field of treating cardiac arrhythmias, the importance of direct management of patients with implantable cardiac devices is growing. The devices have become increasingly complex, and understanding their algorithms and growing programming options is essential for physicians who implant and manage them. Written by experts and world authorities in the field, Pacemakers and Implantable Cardioverter Defibrillators: An Expert's Manual provides electrophysiologists, fellows in training, nurses, and cardiovascular technicians involved in day-to-day management of device patients with detailed information about the many device algorithms and interactions. *Heavily illustrated with over 300 figures and tables *Uniquely meets the day-to-day needs of all direct management professionals *Focuses in detail on algorithms *Describes device interactions, addressing every major manufacturer *Provides in-depth insight into pacing, including biventricular pacing *Discusses arrhythmia detection and device classification, testing, and therapy

This issue of Cardiac Electrophysiology Clinics, guest edited by Mohammad Shenasa and Amin Al-Ahmad, is the second part of our Advances 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.

This issue of Cardiac Electrophysiology Clinics, guest edited by Mohammad Shenasa and Amin Al-Ahmad, will focus on Advances in Cardiac Mapping and Catheter Ablation. This is part one of a two-part issue and will include articles centered around Basic Concepts in Cardiac Mapping, Novel Mapping & Imaging Systems & Technologies, and Catheter and Energy Sources. Topics include, but are not limited to, Embryology of the Cardiac Conduction System Relevant to Cardiac Arrhythmias; Anatomical Consideration Relevant to Atrial and Ventricular Arrhythmias; Fundamentals of Cardiac Mapping; Novel Cardiac Mapping Systems; Non-invasive Mapping & ECGI in Atrial and Ventricular Arrhythmias; Optical Mapping; Omnipolar Mapping; Cardiac CT, MRI, and Fibrosis Quantification; High resolution mapping in patients with atrial and ventricular arrhythmias; Contact Force and Ablation Index; and New Catheter Balloons Including Radiofrequency.