Allograft replacement of the aortic valve for active endocarditis

In the 50 months preceding March 1995, 35 adult patients underwent aortic valve replacement with a cryopreserved human aortic valve allograft. Nine of these patients had active endocarditis. The remaining 26 patients had aortic valve pathology without active infection. This study consists of a comparison of these two groups.

One of the patients with active infection underwent inclusion technique replacement of the infected valve. The other eight valves were replaced with root-replacement technique. Of the 26 non-infected patients, 4 valves were replaced with the inclusion technique, and the remaining 22 were replaced with the root-replacement technique. None of the patients are maintained on long-term anti-coagulation.

We have followed the infected group an average of 32 months and the group without active infection has been followed an average of 27 months. There were two perioperative deaths in the nine patients with infected valves and no deaths in the group without active infection (Pearson's chi2 p<0.05). There have been no thromboembolic complications and no recurrent infections.