An extra issue of JACC: Clinical Electrophysiology was published this month to serve as a mini-themed issue on subcutaneous implantable cardioverter defibrillators and contains numerous other papers selected for their practice-changing potential. Read the thirteenth issue at Electrophysiology.OnlineJACC.org. One particular paper from this issue, authored by Frederick T. Han, MD, FACC, et al., focuses on incessant supraventricular tachycardias, and was selected as a JACC Journals continuing medical education (CME) and Maintenance of Certification (MOC) dual credit activity. Browse the full selection of JACC Journals dual CME/MOC opportunities at ACC.org/JACCDualCredit.