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Journal of the Neurological Sciences |
Pressure reactivity index for early neuroprognostication in poor-grade subarachnoid hemorrhage
Jason J. Chang ∙ David Kepplinger ∙ E. Jeffrey Metter ∙ Daniel R. Felbaum ∙ Jeffrey C. Mai ∙ Rocco A. Armonda Edward F. Aulisi
Abstract
Background
Pressure reactivity index (PRx) utilizes moving correlation coefficients from intracranial pressure (ICP) and mean arterial pressures to evaluate cerebral autoregulation. We evaluated patients with poor-grade subarachnoid hemorrhage (SAH), identified their PRx trajectories over time, and identified threshold time points where PRx could be used for neuroprognostication.