In this issue of Cardiac Electrophysiology Clinics, guest editors Giuseppe Bagliani, Roberto De Ponti, and Fabio Leonelli bring their considerable expertise to the topic of the multifaced aspects of atrial flutter interpreted by precision electrocardiology. Top experts in the field teach readers to discriminate the different forms of atrial flutter based on surface electrocardiogram and intracavitary signals and to correctly approach this arrhythmia invasively by ablation. Readers will also learn the importance of the appropriate treatment in different patient populations. Contains 14 practice-oriented topics including normal and abnormal atrial anatomy relevant to atrial flutters: areas of physiological and acquired conduction blocks and delays predisposing to re-entry; electrocardiographic approach to atrial flutter: classifications and differential diagnosis; pathophysiology of typical and atypical atrial flutter; atrial flutters in adults with congenital heart disease; and more. Provides in-depth clinical reviews on atrial flutter as interpreted by precision electrocardiology, 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, Guest Edited by Drs. Giuseppe Bagliani, Roberto De Ponti, and Fabio Leonelli is dedicated to The Complex World of Cardiac Pre-Excitation: towards Precision Electrocardiology. This is one of four issues selected each year by the series Consulting Editors, Ranjan K. Thakur and Andrea Natale. Topics include, but are not limited to, Anatomy of the AV junction, Pre-excitation, Algorithms to identify accessory pathways location on 12-lead ECG, Pathophysiology of accessory pathways-mediated arrhythmias, Arrhythmias with by-stander accessory pathways, Arrhythmias involving unusual accessory pathways, Sudden cardiac death in patients with ventricular pre-excitation, Clinical approach to symptomatic and asymptomatic patients with ventricular pre-excitation, Methodology of accessory pathway ablation, Ablation of accessory pathways with unusual anatomic location, Ablation of accessory pathways with uncommon electrophysiologic properties, and Ablation in pediatric patients and in association with congenital heart disease.

This issue of Cardiac Electrophysiology Clinics, Guest Edited by Giuseppe Bagliani, Roberto De Ponti, and Fabio Leonelli, will focus on Interpreting Complex Arrhythmias. Topics include, but are not limited to: Simple and complex Arrhythmias; Standard ECG recording; Advanced cardiac signal recording; P and QRS in arrhythmias: identification, analysis and relationship; The comparative value of basic and arrhythmia ECG in the interpretation of arrhythmic mechanism; Challenges in Bradycardias interpretation; Challenges in Narrow QRS tachycardia interpretation; Challenging cases of Wide complex tachycardias; QRS variations during arrhythmia: mechanisms and substrates; Polymorphic ventricular tachycardia: differential diagnosis; Arrhythmias due to acquired or inherited abnormalities of Ventricular repolarization; Arrhythmias in patients with implantable devices; Complex arrhythmias due to reversible causes; and Hidden complexities in routine adult and paediatric arrhythmias interpretation.