An Italian multicentre validation study of the coma recovery scale-revised

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Clinical Diagnostics

Background:

• Accurate diagnosis of disorders of consciousness (DoC) is crucial for patient outcomes.
• Validated clinical tools like the Coma Recovery Scale-Revised (CRS-R) can reduce misdiagnosis rates.
• The Italian version of the CRS-R required validation for its use in diverse clinical settings.

Purpose of the Study:

• To conduct a multicenter validation of the Italian version of the Coma Recovery Scale-Revised (CRS-R).
• To assess the applicability, concurrent validity, and diagnostic sensitivity of the Italian CRS-R.

Main Methods:

• A multicenter study involving 11 Italian centers (ICU, post-acute, long-term facilities).
• 27 rehabilitation professionals administered the CRS-R and Disability Rating Scale (DRS) to 122 patients with Vegetative State (VS) or Minimally Conscious State (MCS).
• Analysis focused on inter-rater reliability, concurrent validity, and diagnostic sensitivity.

Main Results:

• The Italian CRS-R demonstrated good-to-excellent inter-rater reliability across all subscales, especially communication.
• The scale exhibited high sensitivity and specificity for detecting Minimally Conscious State (MCS) against clinical consensus.
• Good concurrent validity was found with the DRS, which showed low specificity.

Conclusions:

• The Italian CRS-R is a valid and reliable diagnostic tool for disorders of consciousness (DoC) from sub-acute to chronic stages.
• The scale can be administered effectively by multidisciplinary rehabilitation teams in various settings.
• Promoting the use of the Italian CRS-R can enhance DoC diagnosis and inform tailored rehabilitation plans.