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trascatheter aortic valve implantation

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https://www.readbyqxmd.com/read/22254207/valvular-leak-after-transcatheter-aortic-valve-implantation-a-clinician-update-on-epidemiology-pathophysiology-and-clinical-implications
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Giuseppe Tarantini, Valeria Gasparetto, Massimo Napodano, Chiara Fraccaro, Gino Gerosa, Giambattista Isabella
During trascatheter aortic valve implantation (TAVI) the native valve is not removed but crushed. Thus, a slight prosthesis insufficiency is not uncommon and has been reported in about 70% of patients for both available types of percutaneous valves. However, the definition of clinically "significant" valve regurgitation is not fully established yet. In most cases, aortic insufficiency is mild and clinical acceptable, however, severe insufficiency can occur. Paravalvular insufficiency is usually prevalent, and it may be the consequence of prosthesis/patient mismatch due to an undersizing of the implanted device or to an incomplete expansion of the prosthesis stent frame, or also to incorrect site of prosthesis implantation...
2011: American Journal of Cardiovascular Disease
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