Incessant Long R-P Tachycardia
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W.B. Saunders
Abstract
A 13-year-old boy had a positive P wave in V1 with a negative P wave in lead I, aVL, and aVR, as well as a positive P wave in the inferior leads, which correlated with a left atrial appendage (LAA) atrial tachycardia (AT) focus. P-wave morphologies can provide clues regarding an AT's origin, and this P-wave negative in lead I favored LAA AT. Careful mapping along the atria and coronary sinus to determine the earliest site of activation for the surface P wave is a reliable method for precisely localizing the AT origin as a target for catheter ablation. © 2016 Elsevier Inc.
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Keywords
Atrial tachycardia, Catheter ablation, Left atrial appendage, Adolescent, Appendicitis, Electrocardiography, Humans, Male, Tachycardia, supraventricular, Amiodarone, Flecainide, Propranolol, Ablation catheter, Case report, Disease severity, Drug substitution, Drug withdrawal, Electrocardiogram, Exercise intensity, Follow up, Heart atrium appendage, Heart electrophysiology, Heart failure with preserved ejection fraction, Heart left atrium, Heart palpitation, Heart rate, Human, Loading drug dose, Maintenance therapy, P wave, Priority journal, R wave, Review, Tachycardia, Transthoracic echocardiography, Complication, Pathophysiology