The Annals of thoracic surgery
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Transcatheter valve implantation into failing surgical mitral bioprosthetic valves have been reported. This strategy avoids performing high-risk repeat cardiac surgery in elderly patients with multiple comorbidities. ⋯ Our experience demonstrates the technical feasibility and safety of this approach. Therefore, mitral valve-in-surgical valve implantation may be a viable treatment alternative in carefully selected patients.
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Multicenter Study Comparative Study
The complex relationship between center volume and outcome in patients undergoing the Norwood operation.
Norwood outcomes vary across centers, and a relationship between center volume and outcome has been previously described. It is unclear whether this volume-outcome relationship exists across all levels of patient risk or holds true for all centers. We evaluated the impact of patient risk status on the relationship between center volume and outcome, and the extent to which differences in center volume account for between-center variation in outcome. ⋯ Center volume is modestly associated with outcome after the Norwood operation independent of patient risk status. However, this relationship explains only a portion of the between-center variation in mortality in this cohort.
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Multicenter Study Comparative Study Clinical Trial
Sutureless perceval aortic valve replacement: results of two European centers.
The Perceval S bioprosthesis (Sorin Biomedica Cardio Srl, Sallugia, Italy) is a self-expanding valve designed to preserve aortic sinuses and sinotubular junction. We report the midterm results of a prospective, multicenter clinical study evaluating the safety and efficacy of this stented bioprosthesis in patients undergoing aortic valve replacement with or without concomitant procedures. ⋯ Perceval sutureless is a safe bioprosthesis that can easily be implanted, including by a minimally invasive technique. It provides excellent hemodynamic with significant clinical improvement. Overall, these data confirm the safety and utility of the Perceval bioprosthesis aortic valve replacement for high-risk patients.
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Comparative Study
Impact of atrial remodeling on heart rhythm after radiofrequency ablation and mitral valve operations.
This study was conducted to determine the effect of left atrial structural remodeling on heart rhythm after radiofrequency ablation concomitant to mitral valve operation. ⋯ Left atrial structural remodeling strongly affects heart rhythm after concomitant radiofrequency ablation and mitral valve operation.
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Multicenter Study Comparative Study
Minimally invasive surgery using bipolar radiofrequency energy is effective treatment for refractory atrial fibrillation.
A web-based registry was used to prospectively study patients after minimally invasive surgery with monitoring to determine freedom from atrial fibrillation (AF) (clinicaltrials.gov/ct2/show/NCT00747838). This is a report showing the utility and feasibility of the registry. ⋯ The STAR (stable angina in practice) registry is an effective web-based tool for long-term follow-up of patients after surgery for AF. Minimally invasive surgery with lesions created by bipolar RF energy is an effective treatment for AF in carefully selected patients.