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Resumen: Introducción y objetivos: La ablación de la fibrilación auricular (FA) por toracoscopia o totally thoracoscopic maze (TT-MAZE) es un tratamiento quirúrgico eficaz cuya indicación, en nuestro país, es marginal. El objetivo es resumir nuestra experiencia en el tratamiento de la fibrilación auricular aislada mediante TT-MAZE. Material y método: Se incluyó a todos los pacientes intervenidos de TT-MAZE entre junio del 2018 y mayo del 2020. Analizamos las características de la serie, las complicaciones asociadas y la supervivencia libre de fibrilación auricular. Resultados: Se incluyó a 26 pacientes. La mediana de edad fue de 64,5 años (IQR 52-69) y el 84,6% (n = 22) eran varones. El 46,2% (n = 12) presentaba una fibrilación auricular persistente, el 34,6% (n = 9) paroxística y el 19,2% (n = 5) persistente de larga duración. La mediana de duración de la FA era de 4 años (IRQ 2-10). A 15 pacientes (57,7%) se les habían realizado ablaciones percutáneas previas y a 6 (23,1%), ablación del istmo cavotricuspídeo. No hubo conversiones a esternotomía media, sangrados ni otras complicaciones mayores.La supervivencia libre de fibrilación auricular a los 6 meses fue del 95,45% y al año del 90,43%. El 54,55% de los pacientes estaban libres de anticoagulación a los 6 meses. Conclusiones: La TT-MAZE es una estrategia eficaz para el tratamiento de la fibrilación auricular sintomática, con una elevada tasa de éxito y una limitada incidencia de complicaciones. Abstract: Introduction and objectives: Ablation of auricular fibrillation (AF) by thoracoscopy or totally thoracoscopic maze (TT-MAZE) is an effective surgical treatment whose indication, in our country, is marginal. The objetive is to summarize our experience in the treatment of isolated auricular fibrillation using TT-MAZE. Material and method: All patients who underwent a TT-MAZE between June 2018 and May 2020 were included. We analyzed the characteristics of the series, the associated complications, and survival free of auricular fibrillation. Results: 26 patients were included. The median age was 64.5 years (IQR 52-69) and 84.6% (n = 22) were male. 46.2% (n = 12) had persistent AF, 34.6% (n = 9) paroxysmal, and 19.2% (n = 5) persistent long-term. The median duration of auricular fibrillation was 4 years (IRQ 2-10). Fifteen patients (57.7%) had undergone previous percutaneous ablations and 6 (23.1%) had ablation of the cavotricuspid isthmus. There were no conversions to median sternotomy, bleeding, or other major complications.Atrial fibrillation-free survival at 6 months was 95.45% and at one year 90.43%. 54.55% of the patients were free of anticoagulation at 6 months. Conclusions: TT-MAZE is an effective strategy for the treatment of symptomatic auricular fibrillation, with a high success rate and a limited incidence of complications.

Dengue fever is a viral infection transmitted by the mosquito, Aedes aegypti. Cardiac rhythm disorders, such as atrioventricular blocks and ventricular ectopic beats, appear during infection and are attributed to viral myocarditis. However, supraventricular arrhythmias have not been reported. We present a case of acute atrial fibrillation, with a rapid ventricular rate, successfully treated with intravenous amiodarone, in a 62-year-old man with dengue hemorrhagic fever, who had no structural heart disease.

Dengue fever is a viral infection transmitted by the mosquito, Aedes aegypti. Cardiac rhythm disorders, such as atrioventricular blocks and ventricular ectopic beats, appear during infection and are attributed to viral myocarditis. However, supraventricular arrhythmias have not been reported. We present a case of acute atrial fibrillation, with a rapid ventricular rate, successfully treated with intravenous amiodarone, in a 62-year-old man with dengue hemorrhagic fever, who had no structural heart disease.