Atrioventricular Arrhythmias


Classification, Electrophysiological Features and Therapy of Atrioventricular Nodal Reentrant Tachycardia

Atrioventricular nodal reentrant tachycardia (AVNRT) denotes re-entry in the area of the AV node, and represents the most common regular arrhythmia in the human.1 Although several models have been proposed to explain the mechanism of the arrhythmia in the context of the complex anatomy and the anisotropic properties of the atrioventricular (AV) node and its atrial extensions (see Figure 1),2 the actual circuit of AVNRT still remains elusive.

Bridging the Knowledge Gaps in Arrhythmogenic Cardiovascular Conditions: The Critical Role of Registries

One of the fundamental principles of evidence-based medicine is that clinical care should be based on data derived from appropriately designed trials, registries, and observational data from patients. The best available evidence is then used to develop guidelines for clinical care, assess quality, measure performance, and improve patient outcomes. The highest level of evidence in clinical medicine, also known as Level of Evidence A, is derived from multiple prospective randomized clinical trials (RCTs) or from meta-analysis.