Are stentless valves hemodynamically superior to stented valves? A prospective randomized trial

Abstract:

Background. Although stentless aortic bioprostheses are believed to offer improved outcomes, hemodynamic benefits remain unsubstantiated. Methods. Fifty-three patients were randomized to receive the stented C-E pericardial valve (CE) and 46 patients the Toronto Stentless Porcine valve (SPV). Annuli were sized for the optimal insertion of both valve types, such that surgeons were required to commit to specific valve sizes before randomization. Echocardiographic measurements and functional status (Duke Activity Status Index) were assessed at 3 and 12 months postoperatively. Results. Although cardiopulmonary bypass times (CE: 118.6 ± 36.3 minutes; SPV: 148.5 ± 30.9 minutes; p = 0.0001) and aortic cross-clamp times (CE: 95.4 ± 28.6 minutes; SPV: 123.6 ± 24.1 minutes; p = 0.0001) were significantly prolonged in the SPV group, perioperative morbidity and mortality was similar between groups. Neither …

Año de publicación:

2002

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Fuente:

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