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R. Loch Macdonald, Daniel J. Curry, Yasuo Aihara, Zhen-Du Zhang, Babak S. Jahromi and Reza Yassari

each group). The values are expressed as means ± SEMs. There was a significant reduction in the diameter of each artery within groups when data obtained on Day 0 were compared with data obtained on Day 7, but there was no significant difference between groups on Day 7. Discussion This is the first study of the effect of MgSO 4 on chronic vasospasm in an experimental model of SAH. The seminal finding is that the same dose that is used to treat eclampsia in humans and is tested in clinical trials of ischemic stroke and SAH elevates serum and CSF levels

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Christopher Reilly, Chris Amidei, Jocelyn Tolentino, Babak S. Jahromi and R. Loch Macdonald

, intracisternal tissue plasminogen activator for the prevention of vasospasm. Neurosurgery 37: 168–178, 1995 11. Findlay JM , Weir BK , Steinke D , et al : Effect of intrathecal thrombolytic therapy on subarachnoid clot and chronic vasospasm in a primate model of SAH. J Neurosurg 69 : 723 – 735 , 1988 Findlay JM, Weir BK, Steinke D, et al: Effect of intrathecal thrombolytic therapy on subarachnoid clot and chronic vasospasm in a primate model of SAH. J Neurosurg 69: 723–735, 1988 12. Fisher CM , Kistler

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evaluated the chronic ocular ischemic syndrome. Results 1) Preoperatively, 77 patients showed reversed OphAr flow, and the other 18 patients showed antegrade OphAr flow. The mean OphAr Vs was -0.28 m/sec, and the CRA Vs was 0.06m/sec. 2) At one month after bypass, 48 patients showed the antegrade OphAr flow. The flow direction of the OphAr flow was corrected significantly. The mean OphAr Vs increased to -0.06 m/sec significantly, and the CRA Vs also increased to 0.08 m/sec significantly. 3) At three months after surgery, 60 patients showed the antegrade flow. The