Unusual complication of a Carpentier-Edwards porcine valve

The following case report describes an early complication of a Carpentier-Edwards porcine heterograft in the mitral position that required emergency replacement of the malfunctioning biological prosthesis with a mechanical one. The leaflets of the valve were in a fixed-open position and would not unfold with left ventricular contractions, resulting in severe mitral regurgitation. After failure to mobilize the valve leaflets, the porcine heterograft valve was excised intact and replaced with a 27 mm Bj?rk-Shiley monostrut prosthesis. The patient was discharged 18 days after operation on Digoxin 0.25 mg daily, Lasix 40 mg twice a week, and Sintrom 2 mg daily. He remains in excellent condition 20 months postoperatively.