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Forest plots for vasospasm-related injury prevention between CSF drainage and no CSF drainage treatment: (A) CSF drainage reduced angiographic vasospasm risk compared with no CSF drainage; (B) CSF drainage reduced sympatomatic vasospasm risk compared with no CSF drainage; (C) CSF drainage reduced DIND or cerebral infarction risk compared with no CSF drainage. CSF = cerebrospinal fluid, DIND = delayed ischemic neurological deficit.
