Abstract
Balloon valvuloplasty is a procedure recently applied to porcine xenograft bioprostheses. We report the percutaneous dilatation of a critically stenosed Carpentier‐Edwards bioprosthesis in the mitral position via an atrial transseptal approach. Hemodynamic measurements revealed an increase in mitral valve area from 0.88 cm2 to 1.34 cm2 and a decrease in the transvalve gradient from 22 mmHg to 12 mmHg. The patient's symptoms dramatically improved, but recurred 8 months later. Repeat cardiac catheterization at 1 year documented restenosis of the porcine xenograft bioprosthesis with a mitral valve area of 0.87 cm2. Thus, stenosis of porcine bioprostheses may be managed by balloon valvuloplasty. As with native valves subjected to balloon valvuloplasty, restenosis is a concern.
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