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Fig. 1 Tachycardia during electrophysiology study with corresponding ladder diagram. Solid dots represent ectopic foci from the atrioventricular junction. Note the lack of retrograde His-atrial conduction. The second sinus beat… Click to show full abstract
Fig. 1 Tachycardia during electrophysiology study with corresponding ladder diagram. Solid dots represent ectopic foci from the atrioventricular junction. Note the lack of retrograde His-atrial conduction. The second sinus beat (asterisk) occurs prior to the anticipated junctional ectopic beat (open circle) and advances His bundle and ventricular activation without terminating or resetting the tachycardia. This response confirms the diagnosis of focal junctional tachycardia (A atrium, AVN atrioventricular node, CSp proximal coronary sinus, H His bundle, HISd distal His bundle, V ventricle)
Journal Title: Netherlands Heart Journal
Year Published: 2018
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