Innovations : technology and techniques in cardiothoracic and vascular surgery
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Innovations (Phila) · Mar 2009
Stentless versus stented bioprosthetic aortic valves: a systematic review and meta-analysis of controlled trials.
: This meta-analysis sought to determine whether stentless bioprosthetic valves improve clinical and resource outcomes compared with stented valves in patients undergoing aortic valve replacement. ⋯ : Evidence from randomized trials shows that subcoronary stentless aortic valves improve hemodynamic parameters of effective orifice area index, mean gradient, and peak gradient over the short and long term. These improvements have not led to proven impact on patient morbidity, mortality, and resource-related outcomes; however, few trials reported on clinical outcomes beyond 1 year and definitive conclusions are not possible until sufficient evidence addresses longer-term effects.