[Late results of replacement of the antrio-ventricular valve]. 
From 1966 to 1969 mitral-valve-allografts have been implanted for mitral valve replacement in 11 and for tricuspid valve replacement in two patients.  Three patients died immediately after the operation.  Eigth allografts in mitral position and one in tricuspid position functioned well.  One case was complicated by candida albicans.  There were no thromboembolic complications.  Long-term follow up revealed late deterioration of allograft function in every case.  Four allografts have been replaced four are still functioning four to six years postoperatively.  Because of the poor durability of the results this method of mitral valve replacement is not used any more.