脳灌流圧モニターが有用であった脳底動脈本幹部脳動脈瘤の1手術例

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We report a case in which a radial artery bypass graft was used to treat a basilar artery trunk dissecting aneurysm. The patient, a 73-year-old man, was transferred to our hospital because of disturbance of consciousness. A CT scan on admission showed subarachnoid hemorrhage in the prepontine cistern and interpeduncular cistern (Fisher group II). Left vertebral angiography revealed a large irregular-shaped dissecting aneurysm that extended from the anterior inferior cerebellar artery (AICA) to the basilar artery bifurcation. We decided to perform a delayed operation because the neurological grade was very poor (Hunt & Kosnik grade: V). Follow-up left vertebral angiography 4 weeks after admission showed that the aneurysm had become saccular in shape. A radical operation was scheduled because the risk of rebleeding from this aneurysm was considered to be relatively high. The operation was performed via a transpetrosal approach with the use of VA-RA (radial artery)PCA bypass. First, the aneurysm was trapped, and then it was clipped because pulse-pressure on perfusion pressure of the superior cerebellar artery (SCA) became almost zero. Postoperative angiography revealed another undipped aneurysm, and a second operation was therefore performed. Angiography after the second operation showed that both aneurysms had disappeared. Finally, we clipped the saccular aneurysms using a VA-RA-PCA bypass. Monitoring of the perfusion pressure of SCA was very useful for deciding whether to perform clipping or trapping of the basilar artery trunk aneurysm.
日本脳卒中の外科学会の論文
2001-01-31

脳灌流圧モニターが有用であった脳底動脈本幹部脳動脈瘤の1手術例

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