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Background: Percutaneous tricuspid valve leaflet repair is an emerging treatment option for severe tricuspid regurgitation (TR). Recent studies demonstrated the usefulness and feasibility of the lately introduced TriClip and PASCAL Transcatheter Valve Repair System. However, initial experiences regarding safety and efficacy of the novel transcatheter PASCAL Ace implant system have not yet been reported. Methods: Sixteen patients with severe, massive, or torrential TR underwent tricuspid leaflet repair using the PASCAL Ace implant at our cardiology department. All patients suffered from symptomatic right-sided heart failure with New York Heart Association functional class III or IV. Clinical, laboratory, echocardiographic, and procedural data were assessed. The primary efficiency end point was postprocedural reduction in TR of at least 1 grade. Secondary end points were feasibility, safety, clinical outcome, and improvement of structural and functional right heart parameters obtained by echocardiography. Results: Eleven procedures (69%) resulted in successful reduction of TR. In 4 patients, PASCAL Ace implantation was not successful and one patient did not achieve TR reduction despite PASCAL Ace implantation. One major bleeding related to the intervention occurred. Eight patients (73%) with successful TR reduction reported a significant improvement of New York Heart Association functional class 4 weeks after implantation (P =0.008). A significant reduction in right atrial volume from 84±41 mL/m2 to 69±36 mL/m2 (P =0.004) and right ventricular end-diastolic diameter from 50±7 mm to 47±8 mm (P =0.013) was observed; however, we did not see an improvement in right ventricular function directly after implantation.Conclusions: Tricuspid valve leaflet repair using the transcatheter PASCAL Ace implant system has the potential to improve clinical status and right heart reverse remodeling in patients with severe TR.

Initial Experience With the PASCAL Ace Implant System for Treatment of Severe Tricuspid Regurgitation