A 78-year-old woman underwent re-replacement of a 19mm Labcor bioprosthesis implanted in aortic position eighteen months earlier. The rupture of the free margin of one leaflet was found at reoperation. There was no apparent cause of this rupture.

How to cite: Gallo, I., Saenz, A., Larramaga, G., Marrero, A., Alvarez, C., & Artinano, E. (1994). Early primary tissue failure of a Labcor bioprosthesis. The Journal of heart valve disease, 3(1), 73–74.