title: Six mechanisms of supraventricular tachycardia in the same patient: report of a case.
abstract: An 18-year-old girl had been suffering from palpitations for 3 years. After a normal and asymptomatic pregnancy, she became highly symptomatic with more than 6 tachycardia paroxysms a week, many of them requiring emergency hospitalizations because of hemodynamic collapse. The electrophysiological evaluation revealed dual A-V nodal pathways and the presence of 4 accessory pathways (3 in the left A-V ring: lateral, posterior, and posteroseptal, 1 right posteroseptal) with 5 types of atrioventricular tachycardia and atrial flutter. The 4 accessory pathways and the slow A-V nodal pathway were successfully ablated, and the patient has been asymptomatic for 12 months without taking antiarrhythmic drugs.
authors.affiliation: Electrophysiology Laboratory, Albarregas Clinic, Mérida, Venezuela. farocha@ing.ula.ve
authors.forename: Abdel J
authors.initials: AJ
authors.lastname: Fuenmayor
authors.forename: Sara
authors.initials: S
authors.lastname: Machacado
authors.forename: Liliana
authors.initials: L
authors.lastname: Carrero
authors.forename: Abdel M
authors.initials: AM
authors.lastname: Fuenmayor
mesh_terms: D000293:Adolescent; D017115:Catheter Ablation; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006329:Heart Conduction System / Q000002:abnormalities / Q000601:surgery; D006801:Humans; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000503:physiopathology*; D013617:Tachycardia, Supraventricular / Q000503:physiopathology* / Q000601:surgery