Nocardial sepsis occurred after aortic valve replacement in two patients. A septic suture aneurysm of the aortotomy was resected and the prosthesis exchanged in one of them. The other received conservative treatment for sternal osteomyelitis and local mediastinitis. Clinical cure was followed by relapse and death from cerebral infarction, and necropsy revealed a septic suture aneurysm of the aortotomy. Radical surgical revision seems to be necessary for lasting cure in such infections.

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We present a case of intraoperative dissection of the aortic root in a patient with non-calcified aortic valve incompetence. This complication led to life-threatening bleeding from the dissection line into the layers of the left ventricle as well as the aortic wall with formation of an increasing subadventitial hematoma. The only possible management was to remove the valve prosthesis and to close the entry site of the dissection when reinserting the valve implant. The mechanism of this complication is discussed.

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