Abstract
A 66-year-old man underwent an urgent operation of the ascending and arch replacement with the branched graft for early thrombosed Stanford type A acute aortic dissection. The regional saturation of oxygen (rSO2) in the right cerebrum suddenly fell down under normothermia because of the redissecton of the innominate artery after discontinuing the extracorporeal circulation. The branched graft was immediately connected through a plastic connector to the graft anastomosed to the right axillary artery as the aortic perfusion. Then, the rSO2 of the right cerebrum returned to the baseline value, and the patient recovered without any neurological deficits after all. The intraoperative malperfusion caused by the redissection is unpredictable, but one of lethal complications, especially in case of critical cerebral ischemia. The intraoperative measurement of rSO2 in the cerebrum is very useful tool for early detection and procedures for preventing irreversible brain damage.
