Introduction Atrial tachycardia (AT) is an important entity in the differential diagnosis of narrow complex tachycardia. It is defined as an arrhythmia that originates in atrial tissue that does not encompass the sinus node. Although nonsustained asymptomatic episodes are frequently…
The first generation of cardiac implantable electronic devices (CIEDs) were implanted by surgeons, initially with epicardial and later transvenous pacing systems. Because of this, when problems were encountered the solution was a surgical technique. As devices became smaller and almost…
Anatomy The sinus (or sinoatrial, SA) node lies near the junction of the superior vena cava and the right atrium. The sinus node is supplied by the sinus nodal artery, which originates from the proximal few centimeters of the right…
Additional content is available online at Elsevier eBooks for Practicing Clinicians It is estimated that almost a third of people will have a problematic tachyarrhythmia, most often atrial fibrillation (AF), at some point during a normal life span. Thus, most…