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Figure 1: Difference in delayed cerebral ischemia between ruptured Fisher grade 3 blister and saccular aneurysms. Comparison of the incidence of delayed neurological deficits from vasospasm in Fisher grade 3 ruptured saccular aneurysms (upper panel) and Fisher grade 3 ruptured blister aneurysms (lower panel). Fisher's exact test showed that patients with Fisher grade 3 ruptured blister aneurysms were significantly more likely to develop delayed neurological deficits from vasospasm than patients with Fisher grade 3 ruptured saccular aneurysms (P = 0.0001)

Figure 1: Difference in delayed cerebral ischemia between ruptured Fisher grade 3 blister and saccular aneurysms. Comparison of the incidence of delayed neurological deficits from vasospasm in Fisher grade 3 ruptured saccular aneurysms (upper panel) and Fisher grade 3 ruptured blister aneurysms (lower panel). Fisher's exact test showed that patients with Fisher grade 3 ruptured blister aneurysms were significantly more likely to develop delayed neurological deficits from vasospasm than patients with Fisher grade 3 ruptured saccular aneurysms (<i>P</i> = 0.0001)