4、ortweresignificantlydifferentduringthe3postoperativedays(x2=204.63,P<0.005).VisualAnalgesiaScales(VAS)weresignificantlydifferentbetweenthetwogenders,malewerehigherthanfemaleintheoperativedayandthe2ndpostoperativeday(P<0.01andP<0.05). Keywords:Valvereplacement P