Head Injuries - Concussions What is a concussion •...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Concussions What is a concussion? • “cerebral concussion” – Clinical syndrome – Caused by an injury to the brain • “_________________” – Characterized by Cerebrum • Largest part of the brain • Large mass of nerves • Controls: – ________________ • Coordination of muscle contractions – ________________ • vision, speech, smell, taste, • proprioception – ________________ • Spatial relationships • Behavior • Memory Etiology • How does it occur? • Concussive force to the brain – Coup force – Contrecoup force – Rotational / shear force – Repeated subconcussive force Coup Force – Ex. Getting hit in the head by a baseball • Causes trauma to side of head that was struck May be movement of the brain that causes the trauma and not the actual blow Contrecoup Force – Ex. falling & striking head on the floor – Ex. falling on butt • Brain strikes skull on opposite side of impact Rotational / Shear Force • Sudden twisting or acceleration – deceleration force – Disrupts neural activity throughout brain Repeated subconcussive forces • Repeated sub- concussive forces or concussions can cause – Ex. Soccer heading – Ex. Boxing • “punch drunk” Signs & Symptoms - Acute • Unconsciousness (9%) – Altered LoC • Amnesia (27%) – Retrograde – Anterograde • Headache – Worse w/ movement • Mental confusion • Inability to concentrate • Disorientation • Unsteadiness / vertigo • Dizziness / lightheaded • Nausea, vomiting • Ringing in ears (“tinnitus”) • Disturbances of vision – “nystagmus” – Blurred vision – Pupillary discrpencies – photophobia • Motor impairment – loss of coordination • Altered speech • Behavioral changes – Agitated, anger, anxiety, S/S - Delayed • Persistent headache – Worsens w/ mvt • Excessive fatigue • Sleep irregularities • Loss of concentration • Depression / anxiety • Lethargy • Memory difficulties • Lightheadedness • Irritability / easily frustrated • Intolerance to bright lights / sounds • Loss of appetite *Post concussion syndrome Grading / Rating Scales • No consensus on how to grade / rate concussions – American Academy of Neurology – American College of Sports Medicine – Cantu Concussion Rating Guidelines – Colorado Medical Society Concussion Rating Guidelines – Torg Scale – Etc. Cantu Colorado AAN Torg Grade 1 (Mild) No loss of consciousness; PTA < 30 min No loss of consciousness Confusion w/o amnesia; No loss of consciousness; Transient confusion; Concussion s/s or MS abnormalities resolve in less than 15 min No loss of consciousness or amnesia (except PTA) Grade 2 (Moderate) Loss of consciousness less than 5 min or PTA greater than 30 min No loss of consciousness Confusion with amnesia; No loss of consciousness; Transient confusion; Concussion s/s or MS abnormalities last more than 15 min Loss of consciousness less than few minutes; PTA or retrograde amnesia Grade 3 (Severe) Loss of consciousness greater...
View Full Document

This note was uploaded on 05/01/2008 for the course KIN 312 taught by Professor Downey during the Fall '08 term at University of Texas.

Page1 / 60

Head Injuries - Concussions What is a concussion •...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online