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Though the Carpentier Edwards PERIMOUNT Magna Ease valve is a bioprosthesis with documented excellent haemodynamics and easy implantability, this valve has a gap between the cobalt-chromium-nickel alloy stent and silicone sewing ring. This gap, which is widest just below each of the three commissural struts, lacks silicone and leaves the two-layer polytetrafluoroethylene fabric unsupported and unprotected. If the needle of a valve suture is placed in this structurally weak area of the sewing ring, the resultant fabric tear may result in a true cuff leakage, not the usual paravalvular leakage. We describe this pitfall in the context of a recent operation to alert surgeons everywhere that suture placement too close to the stent (missing the silicone sewing ring) can result in postoperative cuff leakage. We need to be very careful to include the silicone ring in each stitch to prevent injury to the valve cuff of this prosthesis and to avoid cuff leakage.

Cuff leakage, not paravalvular leakage, in the Carpentier Edwards PERIMOUNT Magna Ease aortic bioprosthesis