Aims Though right atrial appendage tachycardia (RAAT) has been described, no studies to date have focused on its clinical characterization. The aim of the present study was to analyze its clinical, electrocardiographic (ECG), and electrophysiologic (EP) characteristics and the results of radiofrequency ablation (RFA) in RAAT.Methods and results Out of 186 consecutive patients undergoing RFA for AT, 15 (8%) had focal RAAT. Mapping was performed using conventional catheters or a 3D electroanatomic mapping system. Patients with RAAT were more likely to be male (66 vs. 38%; P ¼ 0.013) and younger (32 + 12.6 vs. 55 + 13.2 years; P , 0.001) than patients with AT originating elsewhere. They were also more likely to have dyspnea (27 vs. 7.6%; P ¼ 0.03), incessant tachycardia (53 vs. 16%; P , 0.001), and left ventricular systolic dysfunction (27 vs. 5%; P ¼ 0.018). RFA was effective in all patients (100 vs. 75%; P ¼ 0.022) and no recurrences (0 vs. 8%; P ¼ 0.31) were observed during a mean follow-up of 37 + 36 months. A specific ECG pattern was identified, consisting of negative P-waves in leads V1-V2 and a transition to positivity in the rest of the precordial leads. This ECG pattern correctly identified RAAT with a sensitivity of 100%, a specificity of 98%, a positive predictive value of 88%, and a negative predictive value of 100%. Conclusion Right atrial appendage tachycardia is more prevalent in young male patients and is commonly associated with tachycardiomyopathy. RFA is effective over long-term follow-up. A characteristic ECG pattern identifies RAAT with a very high sensitivity and specificity.

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Purpose: Patients ≥80 yr are not frequently referred for cardiac rehabilitation (CR). This study aimed to describe the benefit of CR in the very elderly population in comparison with patients ≤65 and 66-79 yr in terms of gain in functional status and improvement of mood disorders. Methods: We conducted a prospective, cohort, single-center study. Physical performance was evaluated with a 6-min walk test (6MWT). Anxiety, depression, and overall psychological distress were evaluated with Hospital Anxiety and Depression Scale (HADS) scores. Primary outcomes were the percent improvement in the predicted distance and the reduction in the prevalence of anxiety, depression, and overall psychological distress. Results: There were 45 (9%) patients ≥80 yr among 499 participants. There were no significant differences in the percent improvement of the predicted distance in the 6MWT among age groups, being +15 (7, 25)%, +15 (7, 25)%, and +10 (4, 26)% for ≤65, 66-79, and ≥80-yr groups, respectively (P = .11). The elderly group had a higher prevalence of depression, anxiety, and overall psychological distress (72%, 51%, and 38%, respectively). After CR, there was a significant improvement in HADS scores in all groups. The prevalence of depression was reduced by 38%, anxiety by 60%, and overall psychological distress by 58%. Conclusion: Patients ≥80 yr have decreased physical performance and a higher prevalence of mood disorders than their younger counterparts. Nevertheless, they improved significantly in all outcomes measured.

Objective: Cardiac sympathetic denervation (CSD) using video-assisted thoracoscopy is a therapeutic alternative for cardiac arrhythmias refractory to conventional treatment in patients with ventricular structural heart disease, mainly due to ischemia, and in patients with hereditary conditions associated with sudden death such as long QT syndrome. In general, it is performed in cases with recurrent episodes of ventricular tachycardia or electrical storm, in spite of conventional treatment. The objective of this study is to show the experience of this institution with DSCI in refractory patients to conventional management and the results derived from its application. Methods: This was an observational retrospective study. The records of patients with a history of ventricular arrhythmias treated in our center with pharmacological treatment, catheter ablation, or implantation of an implantable cardioverter-defibrillator (ICD), who underwent video-assisted CSD were analyzed and described. Results: A total of six patients were included in the study. Patients with structural heart disease were the most frequent, median age was 56 ± 16 years; 67% were male. The procedure evolved without complications in any of the patients and an overall significant improvement was observed. A 24-month follow-up was conducted; two patients had recurrence episodes presenting as slow ventricular tachycardia without severe symptoms and a third patient presented an episode of ventricular fibrillation aborted by the ICD. Conclusion: Video-assisted CSD should be considered as a treatment option for patients with potentially dangerous arrhythmias that do not respond to conventional treatment, especially in recurrent ventricular tachycardia.

A809 1.3% was observed (p< 0.001). For VAS-identified adherent patients, CVR decreased significantly by 4.4% from baseline to 90 days (p< 0.001). However, a significant decrease of 4.3% (p< 0.001) was also observed for VAS-identified non-adherent patients. ConClusions: Patients identified as adherent using the first item of the BAAS showed significantly improved 10-year cardiovascular risk scores after 90 days of treatment with valsartan, compared to patients who were identified as non-adherent. The VAS scale was not sufficiently sensitive to determine the effect of adherence on cardiovascular risk score.