A novel comparison of stentless versus stented valves in the small aortic root

摘要: Abstract Background: Previous studies have compared prosthetic valves on the basis of industry-labeled valve sizes. Unfortunately, relationship between labeled size and true measured external or internal diameter differs manufacturers. Therefore hemodynamic comparisons are inaccurate if based solely Methods: We previously demonstrated that a 21-mm Carpentier-Edwards pericardial stented is similar to 25-mm Toronto stentless porcine valve. we chose compare postoperative hemodynamics in patients who received 19-, 21-, 23-mm (inner 18-22 mm, n=69) with those 23- (internal 19-21 n=41). Results: Patients group were more likely be elderly require concomitant revascularization. Operative mortality was lower (0% vs 9%, P = .06). Hospital stay ventilation requirements shorter group. Postoperative two groups. Conclusions: These data provide evidence profiles small aortic root when matched diameters. The clinical benefit may due patient selection lack rigid stent root, but it not superiority over (J Thorac Cardiovasc Surg 1999;117:431-8)