The patient required aortic valve replacement due to severe calcification of his native valve.The valve was sized for a extra large perceval which was brought to the field.Three guiding sutures were placed at the commissure nadirs and the valve delivered.Positioning appeared excellent with no significant evidence for under oversizing.Per the ifu, balloon dilation of the valve was performed.The aorta was then closed in a double layer fashion.However during the de-airing process, it was noted the valve positioning was extremely altered and was now noted in the left ventricular cavity.It required the patient to be placed on cardio-pulmonary bypass again.The perceval valve was retrieved and replaced by another manufacturer's valve.No further events occurred from this situation and the patient recovered.
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