**4.3 Disability**

A detailed neurological exam is required following the return of circulation to help determine the likely cause and indication for immediate investigations such as a computerized tomography (CT) brain scan. A comprehensive exam may be delayed depending on the use of long-acting sedation and muscle relaxant; however, the presence of asymmetrical neurological findings may suggest intracranial pathology and the need for urgent imaging. Brainstem responses, including the pupillary, corneal, oculocephalic, gag, and cough response to stimulation, correlate with prognostication and survival and should be assessed.
