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Figure 1 Comparison of Pre- With Postoperative Flow Rates for the 4 Valve Designs
Preoperative flow rates were set as 100%. A significant increase was observed for all valves postoperatively. Postoperative flow rates were significantly greater for biological valves compared with the mechanical groups (*p < 0.01) and within the biological group for stentless prosthesis ( p < 0.05). At follow-up, coronary flow was lower compared with the early postoperative phase with the Advantage in favor of the stentless valve compared with the 3 other substitutes being maintained ( p < 0.05).
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