The Edinburgh-2 coma scale: a new scale for assessing impaired consciousness

Area of Science:

• Neurology
• Neurosurgery
• Critical Care Medicine

Background:

• Accurate assessment of impaired consciousness is crucial for managing acute cerebral disturbances.
• A standardized international coma scale for assessing consciousness levels is currently lacking.
• Existing scales like the Glasgow Coma Scale (GCS) have limitations, including ambiguous terminology.

Purpose of the Study:

• To introduce the Edinburgh-2 coma scale (E2 CS) as a potential international standard.
• To compare the reliability and correlation of the E2 CS with the Glasgow coma scale (GCS).
• To evaluate the E2 CS's effectiveness in predicting outcomes for neurosurgical patients.

Main Methods:

• The Edinburgh-2 coma scale (E2 CS) was developed and introduced.
• The E2 CS was compared against the Glasgow coma scale (GCS).
• The reliability of the E2 CS was assessed by correlating its levels with patient outcomes post-neurosurgical operations.

Main Results:

• A strong correlation was observed between E2 CS levels and patient outcomes.
• A change of two levels on the E2 CS indicated significant intracranial changes affecting patient outcome.
• A proven correlation exists between the E2 CS and the GCS.

Conclusions:

• The E2 CS demonstrates good reliability and correlation with patient outcomes and the GCS.
• The E2 CS offers advantages over the GCS, including clearer terminology and a more intuitive, first-dimensional arrangement for tracking changes.
• The E2 CS can be used alongside the GCS to enhance data collection and potentially improve existing coma scales.