The Coma Recovery Scale Modified Score: a new scoring system for the Coma Recovery Scale-revised for assessment of patients with disorders of consciousness

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The differential diagnosis between vegetative state and minimally conscious state is still complex and the development of an evaluation systems is one of the challenging tasks for researchers and professionals. The Coma Recovery Scale-revised is considered the gold standard for clinical/behavioral assessment and for the differential diagnosis of patients with disorder of consciousness. However, the scale presents some limitations in that (i) scores may partially overlap between different diagnoses and (ii) there is an underlying assumption that if a patient is able to show higher-level behaviors, he/she is also able to show lower-level responses. In the present study, a procedure to calculate a modified Coma Recovery Scale-revised score is presented that attempts to avoid these problems. To exemplify this new scoring approach, 60 patients with disorder of consciousness were studied and the results showed the usefulness of the Modified Score.

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