1. Percutaneous valve devices
Percutaneous valve devices. (A) The Cribier-Edwards/Sapien valve consists of three equine pericardial leaflets fixed to a balloon-expandable steel stent. It is hand crimped over a delivery balloon prior to deployment. (B) The Corevalve system is constructed of porcine or bovine pericardium attached to a self-expanding nickel-titanium alloy (nitinol) stent. The ventricular portion has a high radial force to compress the native valve. The midportion is tapered to avoid interference with the coronary arteries. The aortic portion is flared to provide additional fixation against the wall of the ascending aorta. Percutaneous valve devices. (C) The Melody pulmonary valve is constructed from a bovine jugular venous valve attached with sutures to a platinum-iridium alloy stent. Its use is primarily in failed surgically constructed right ventricular to pulmonary artery conduits in the pediatric population. (D) Postmortem photograph from a patient who died following percutaneous valve implantation. The valve prosthesis can be seen to be fully expanded within the left ventricular outflow tract with good leaflet coaptation. The interventricular septum can be seen to the left and the anterior leaflet of the mitral valve to the right. (Reproduced with permission from Schoen FJ, Webb JG: Prosthetics and the heart, in McManus BM, Braunwald E [eds.]: Atlas of Cardiovascular Pathology for the Clinician. Philadelphia, Current Medicine, 2008; pp 241.)
Source: Chapter 5. Cardiovascular Pathology, Cardiac Surgery in the Adult, 4e
Citation: Cohn LH. Cardiac Surgery in the Adult, 4e; 2012 Available at: Accessed: October 07, 2017
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