2.3: What should be recorded as the patient’s NIHSS score on arrival if they are unconscious or comatose?

If a patient is unconscious or comatose on arrival, “3” should be selected for LOC (2.3.1) and “not known” should be selected for all other instances where the NIHSS is untestable. For further information regarding when “not known” is an appropriate selection please refer to the dataset helpnotes or the online NIHSS training resource.