Bradycardias
Bradycardias Introduction The electrophysiologic (EP) study provides a means to assess sino-atrial node (SAN) function and the integrity of the atrio-ventricular node (AVN)-His-Purkinje axis. The purpose of this chapter is…
Mechanisms of Tachycardia
Mechanisms of Tachycardia Introduction The three mechanisms responsible for tachycardia are 1) reentry, 2) enhanced automaticity, and 3) triggered activity. Electrocardiographic presentations of tachycardia are mechanism specific including its initiation,…
