The mnemonic
4-5-6 for E-V-M
What each word stands for
- EEye opening — maximum 4
- VVerbal response — maximum 5
- MMotor response — maximum 6
Why it matters clinically
Total ranges from 3 to 15; 8 or less usually means airway protection is needed.
Where it stops being reliable
Gives the maxima only, not the grades within each component.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.