Stories
Exercise testing provides a controlled way to observe how the heart’s electrical system responds to increasing sympathetic activity, rising heart rate, and…
Chagas disease creates a distinctive substrate for bradyarrhythmia management. Infection with Trypanosoma cruzi may cause progressive myocardial fibrosis,…
An electrocardiogram can remain altered after the rhythm that produced the change has ended. This phenomenon, known as cardiac memory, describes transient…
Catheter ablation has become an established treatment for symptomatic atrial fibrillation (AF), yet the procedure does not end the patient’s risk of acute care…
Transvenous pacemaker and implantable cardioverter-defibrillator (ICD) leads have transformed the treatment of bradyarrhythmias, heart failure, and sudden…
Atrial fibrillation (AF) is shaped by electrical triggers and the structural environment in which those triggers arise. Fibrosis, collagen accumulation,…
Supraventricular tachycardia (SVT) can become more disruptive with age. Episodes of atrioventricular nodal reentrant tachycardia, atrioventricular reentrant…
Recurrent vasovagal syncope can be frightening, disabling, and difficult to manage when episodes continue despite education, hydration, medication review, and…
Complex catheter ablation depends on a precise understanding of anatomy before the first catheter enters the body. This is especially true when arrhythmogenic…
Sudden cardiac arrest in a child or adolescent is uncommon, yet its consequences are profound. A wearable cardioverter-defibrillator (WCD) offers temporary…