Archives of neurology
-
Archives of neurology · Apr 2010
Cerebrovascular carbon dioxide reactivity and delayed cerebral ischemia after subarachnoid hemorrhage.
To determine the predictors of impaired cerebrovascular reactivity (CVR) and the value of CVR in predicting delayed cerebral ischemia (DCI) after subarachnoid hemorrhage (SAH). ⋯ Impaired CVR in response to carbon dioxide challenge is frequent after SAH, particularly in patients with a poor clinical grade. Progressive loss of normal CVR identifies patients at high risk for DCI, and persistently normal reactivity implies a low risk.