Heart Rhythm Case Reports provides rapid online publication of the most important current case reports, illustrations, and educational vignettes in the field of cardiac arrhythmias and electrophysiology. The Journal, one of three online-only, open access companion titles to the respected Heart Rhythm, publishes case reports and series devoted to the diagnosis and treatment of heart rhythm disorders, as well as the electrophysiology of the heart and blood vessels. All articles are peer-reviewed. Research and review articles and short reports can be submitted to the Journal’s companion title, Heart Rhythm O2.