Changing Paradigms for Bioprosthetic Valves
نویسندگان
چکیده
منابع مشابه
Thrombosis of Bioprosthetic Valves
O ver the 5 decades that bioprosthetic valves (BPVs) have been commonly implanted, the frequency of superimposed thrombosis has been thought to be negligible (1). Thus, early echocardiographic follow-up of patients with BPVs has been sparse, and chronic anticoagulation was mostly avoided. After the baseline post-operative study, current guidelines state that “patients with bioprosthetic valves ...
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from the University of Alberta (Canada) report a series of animal experiments designed to test the mythic role of gluteraldehyde in preventing recognition of bioprosthetic heart valve antigenicity with subsequent rejection and failure. Gluteraldehyde–cross-linked xenograft tissues (initially porcine) have been used in the manufacturing of stented (and now stentless) heart valves since 1970. Ori...
متن کاملComparative hydrodynamic evaluation of bioprosthetic heart valves.
BACKGROUND AND AIM OF STUDY Pressure gradients across cardiac valve prostheses have been identified as one of the most important performance measures in valve replacement surgery. Specifically in aortic valves, these gradients influence reduction of left ventricular hypertrophy and are postulated to influence long-term survival. The correct choice of replacement valve is hampered by a lack of u...
متن کاملSubclinical Valve Thrombosis in Sutureless Bioprosthetic Valves
I n the current issue of JAHA, Dal en et al 1 report the results of a single-center prospective observational study of 47 patients with implantation of the Perceval sutureless bioprosthesis (LivaNova, Milan, Italy). Cardiac computed tomography (CT) performed at a median of 491 days (range 36– 1247 days) found hypo-attenuated leaflet thickening (HALT) in 18 (38%) and reduced leaflet motion (RLM)...
متن کاملTranscatheter valve-in-valve implantation for failed bioprosthetic heart valves.
BACKGROUND The majority of prosthetic heart valves currently implanted are tissue valves that can be expected to degenerate with time and eventually fail. Repeat cardiac surgery to replace these valves is associated with significant morbidity and mortality. Transcatheter heart valve implantation within a failed bioprosthesis, a "valve-in-valve" procedure, may offer a less invasive alternative. ...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Imaging
سال: 2018
ISSN: 1936-878X
DOI: 10.1016/j.jcmg.2017.08.016