Publications by authors named "Yasufumi Hara"

Treatment for moyamoya disease includes direct and indirect anastomosis. During surgery, acute and massive brain swelling has been encountered infrequently just after opening of the dura mater, while mild or moderate brain swelling is frequently found just after opening of the dura mater. Four out of 866 cases operated on by the first author in the last twenty-two years showed acute and massive brain swelling and the operation had to be completed as soon as possible.

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Background: Heme oxygenase produces carbon monoxide (CO) during the breakdown of heme molecules. A variety of stressors upregulate this enzymatic activity and can increase exhaled CO levels. Recently, exhaled CO levels have been reported to increase in critically ill patients and after anesthesia and surgery.

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Cerebral angiography is performed for diagnosis and management of moyamoya disease and in childhood moyamoya disease is usually carried out under general anesthesia after tracheal intubation. Mechanical irritation to trachea resulting in pain,cough,and increase in secretion after termination of the general anesthesia sometimes occurs and it sometimes causes hyperventilation resulting in hypocapnea. Continuous hypocapnea sometimes causes appearance of ischemic attacks in moyamoya disease.

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Mannitol is used commonly as an osmotic diuretic to reduce intracranial pressure during the perioperative period of craniotomy. The rapid administration of mannitol solution can cause an imbalance of electrolytes such as sodium and potassium. Here, we report two cases of mannitol-induced hyperkalemia.

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