[Electroanatomic mapping and radiofrequency catheter ablation of focal atrial tachycardias].
Focal atrial tachycardia is defined as supraventricular tachycardia originating from discrete sites from which activation spreads to both atrial. In most clinical series, atrial tachycardia account for about 5% of all supraventricular arrythmias. This tachycardia can occur in children or adults within and without structural heart disease. Three potential mechanisms are described for its origin: abnormal automaticity, triggered activity or microreentry. Catheter ablation has an important role in the management of focal atrial tachycardia and is now considered to be a first line therapy, can be improved with electroanatomical mapping system (CARTO) that allows reconstruction of the chamber geometry and allow visualization of the activation sequence; and can to improve the efficacy of catheter ablation.
Gómez-Flores
Jorge
J
Departamento de Electrofisiología, Instituto Nacional de Cardiología Ignacio Chávez. jorgerafa@hotmail.com
Jacobo-Ruvalcaba
Andrés
A
Márquez
Manlio F
MF
D017115:Catheter Ablation; D006801:Humans; D013612:Tachycardia, Ectopic Atrial / Q000503:physiopathology* / Q000601:surgery*