Udi (b)(4).The device was not returned to edwards for evaluation.Partial or total occlusion or obstruction of the coronary ostia is a recognized complication of an aortic valve replacement and, less frequently, from mitral valve replacement.It is typically the result of a technical error during valve implant and not related to a product malfunction.However, partial or total occlusion of the ostia, if unrecognized, can result in angina, myocardial infarction, acute peri-operative right, left or bi-ventricular dysfunction and/or death.In this case, the patient experienced cardiac arrest and collapse due to the left main coronary artery occlusion and the valve was replaced with a smaller size valve.A definitive root cause cannot be determined.If additional information is received a supplemental mdr will be submitted.Edwards lifesciences will continue to monitor all reported events.No further actions are required at this time.
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It was reported that a 23mm valve was explanted at implant due to cardiac arrest and collapse due to left main coronary artery occlusion.A 21mm valve was implanted in replacement.The patient was transferred to the pacu in stable condition.The patient was discharged on pod #5.The patient presented with severe aortic regurgitation and underwent an aortic valve replacement with a 23mm valve.After protamine administration and decannulation was completed without difficulties, the patient had cardiac collapse and arrest requiring reinstitution of cardiac bypass.The echo suggested that there was poor flow down the left main artery.The patient was re-heparinized and aorta was cross clamped.The aorta was opened and the valve was inspected.It was unclear if the left main was obstructed but to be sure the valve was removed and downsized to a 21mm valve.At completion of weaning from bypass, the patient had excellent hemodynamics.The patient was transferred to the pacu in stable condition.The patient had one episode of atrial fibrillation with rapid ventricular rate on pod #2.The patient was discharged on pod #5.The implantation data card indicated that the device explant was not due to deficiency of the original device.
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