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The valve is then sewn to this patch with horizontal mattress sutures.(C) Once the mitral valve prosthesis is in place, the aortic valve prosthesis is secured through-out most of the annulus. The pericardial patch reconstructs the medial part of the aortic valve annulus and the aortic valve is then sewn to the patch. (D) After the valve replacements are complete, the pericardial patch is ... ................
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