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Concussion grading systems are sets of criteria used in sports medicine to determine the severity, or grade, of a concussion, the mildest form of traumatic brain injury.At least 16 such systems exist, [1] and there is little agreement among professionals about which is the best to use. [2]
In Grade I, widespread axonal damage is present but no focal abnormalities are seen. In Grade II, damage found in Grade I is present in addition to focal abnormalities, especially in the corpus callosum. Grade III damage encompasses both Grades I and II plus rostral brain stem injury and often tears in the tissue. [36]
A concussion, also known as a mild traumatic brain injury (mTBI), is a head injury that temporarily affects brain functioning. [8] Symptoms may include headache, dizziness, difficulty with thinking and concentration, sleep disturbances, mood changes, a brief period of memory loss, brief loss of consciousness; problems with balance; nausea; blurred vision; and mood changes.
[20] [5] The Glasgow Coma Scale (GCS), the most commonly used system for classifying TBI severity, grades a person's level of consciousness on a scale of 3–15 based on verbal, motor, and eye-opening reactions to stimuli. [22] In general, it is agreed that a TBI with a GCS of 13 or above is mild, 9–12 is moderate, and 8 or below is severe.
A concussion is defined as a mild traumatic brain injury from a blow to the head or the body that causes the brain to rapidly rattle back and forth, causing symptoms that may include double vision ...
The RPQ is used to determine the presence and severity of post-concussion syndrome (PCS), a set of somatic, cognitive, and emotional symptoms following traumatic brain injury that may persist anywhere from a week, [1] to months, [2] or even more than six months. [1] [3] The RPQ has been cited in over 40 papers. [4]
[2] [3] Grade Description Approximate frequency Likelihood of difficult intubation 1: Full view of glottis: 68–74% <1% 2a: Partial view of glottis: 21–24%: 4.3–13.4% 2b: Only posterior extremity of glottis seen or only arytenoid cartilages: 3.3–6.5%: 65–67.4% 3: Only epiglottis seen, none of glottis seen: 1.2–1.6%: 80–87.5% 4 ...
According to the Professional Coin Grading Services (PCGS), a grade 67 specimen (uncirculated, with only minor imperfections) is worth about 7 million on the open market. 2005-D 5C Speared Bison ...