脳血管攣縮　　くも膜下出血後脳血管攣縮期の脳血流評価におけるｖａｓｏｐａｒａｌｙｓｉｓの頻度と病態に関しての検討

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  • A Clinical Study of Cerebral Vasoparalysis During a Period of Cerebral Vasospasm after Subarachnoid Hemorrhage

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We employ the 123I-IMP SPECT dual table ARG method and stereotactic extraction estimation (SEE) analysis 7 or 8 days after subarachnoid hemorrhage (SAH) onset to predict cerebral vasospasm. We report new findings of cerebral vasoparalysis during a period of cerebral vasospasm after SAH. <br> From January 1, 2005 to April 30, 2008, we encountered 330 cases of aneurysmal SAH, and treated 285 cases. Of these, 65 were excluded as unsuitable for this study, for reasons such as lack of SPECT data, external decompression, admission over 7 days from SAH onset. We studied 220 cases treated by microsurgical clipping (n＝178) or endovascular coil embolization (n＝42). Vasoparalysis was defined as a rise in resting CBF and a loss of vascular reserve on SEE analysis of CBF-SPECT.<br> Vasoparalysis occurred in 15 cases (6.8%). Of these, 9 cases (60.0%) had cerebral hematoma, temporary clips had been used in the operation for 8 cases (53.3%), 9 cases (60.0%) experienced postoperative cerebral infarction, and 3 cases (20.0%) had postoperative convulsions. Vasoparalysis occurs in relation to perioperative cerebral damage.<br> In terms of the loss of vascular reserve following SAH, vasoparalysis resembles hemodynamic cerebral ischemia, although the conditions are quite different. Differentiating between these 2 conditions is important, as different forms of management are required. Dual table ARG and SEE analysis are very useful for the evaluating these 2 conditions.<br>

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  • 脳卒中の外科

    脳卒中の外科 39 (1), 1-6, 2011

    一般社団法人 日本脳卒中の外科学会

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