CONCUSSION GRADING SYSTEMS -

American Academy of Neurology Concussion Severity- March 1997 Practice Parameter:

Grade 1:
__ Transient Confusion
__ No Loss of Consciousness
__ Concussion Symptoms < 15 Minutes
Grade 2:
__ Transient Confusion
__ No Loss of Consciousness
__ Concussion Symptoms > 15 Minutes
Grade 3:
__ Any Loss of Consciousness, Brief or Prolonged

Cantu Concussion Severity Grades

Grade 1:
__No Loss of Consciousness AND Post Traumatic Amnesia < 30 Minutes
Grade 2:
__ Loss of Consciousness < 5 Minutes OR Post Traumatic Amnesia of 30 Minutes to 24 Hours
Grade 3:
__Loss of Consciousness > 5 Minutes OR Post Traumatic Amnesia > 24 Hours

Ruff Concussion Grades:

Type I :
__ altered mental state or transient loss of consciousness (LOC)
__ 1-60 seconds of post-traumatic amnesia (PTA)
__ one or more neurological symptoms

Type II:
__ definite LOC with time unknown or < 5 minutes
__ 60 seconds to 12 hours of post-traumatic amnesia (PTA)
__ one or more neurological symptoms

Type III:
__ 5 - 30 minutes of LOC
__ more than 12 hours of PTA
__ one or more neurological symptoms