World Heart Rhythm Week – June 7, 2026

History of World Heart Rhythm Week

Over the past four decades, there has been significant progress in efforts to understand and manage cardiac arrhythmias. The combination of programmed electrical stimulation of the heart with intracardiac activation reading and recording was an important development in this effort near the end of the 1960s. This procedure helped in the localization of the exact site of the obstruction in the atrioventricular conduction system in patients suffering from bradycardia (heart rates of less than 60 beats per minute), and the identification of the original site and the mechanism of supraventricular and ventricular tachycardia (heart rates of over 100 beats per minute).

Combining information and data from intracardiac studies with solid results on the 12-lead electrocardiogram (E.C.G.) led to far better specification and localization of conduction abnormalities and arrhythmias using the E.C.G. This development paved the way for new therapies, such as bradycardia and anti-tachycardia pacing, and surgery for supraventricular and ventricular tachycardia. Introducing the implantable defibrillator to treat life-threatening arrhythmias was another revolutionary development in the understanding and management of arrhythmia. At one point, concerns about the failure of antiarrhythmic medications to protect patients at risk of sudden death led to an increase in the rate of drug production.

Further along the line, the alternative treatment and cure for patients with different arrhythmias by catheter ablation became possible. The innovation of genetic analysis also allowed for the identification of different monogenic arrhythmic diseases. However, in more recent times, there are still certain challenges facing the efforts toward better managing arrhythmias, which include the epidemic of atrial fibrillation, arrhythmias in heart failure, and sudden death of patients out-of-hospital. One-fifth of all arrhythmic deaths are sudden and unexpected. The most important issue remains focusing on the prevention of the occurrence of these unnecessary deaths.