North was given immediate treatment on the pitch before being temporarily replaced by Liam Williams to undergo a mandatory concussion check, yet he was deemed in a good enough condition to return to the field of play.
Service members suspected of having a concussion undergo initial assessment with a neuropsychological test, such as the Military Acute Concussion Evaluation (MACE).
Every player suspected of having a concussion would later undergo the ImPACT neurological test, Maroon said, sometimes after the game but usually the next day.
Richter, who did not attend last night's game, said he was still awaiting some of the results from the battery of tests he underwent in Montreal last weekend with Dr. Karen Johnston, a concussion specialist.
The loosehead prop is "symptom free" from his head knock but it is being treated as a concussion, requiring him to undergo the mandatory graduated return to play protocol. .
Those who have suffered a concussion or undergone a colonoscopy should wait a day before flying.
Thrashers goalie Ondrej Pavelec has a concussion and remains hospitalized while undergoing additional tests to determine why he collapsed in the early minutes of Friday's season opener.
Under NFL rules, players who are suspected of having a concussion during games are supposed to undergo a sideline evaluation, and further tests can be administered in the locker room afterward.
Now if a doctor suspects a player has suffered a concussion, the player is taken from the field to undergo a five-minute assessment.
