Head Trauma

Front 1

Know the definition of a cerebral contusion.

Back 1

Permanent damage to small blood vessels and the surface of the brain.

Front 2

Know the pathogenesis of a cerebral contusion.

Back 2

Most often secondary to an acceleration-deceleration injury

Front 3

Know coup versus contrecoup injuries.

Back 3

Coup injuries occur at the site of impact.
Contrecoup injuries occur opposite the site of impact
Common sites are at the tips of the frontal and temporal lobes

Front 4

What is this an example of?

Back 4

The gross features of a cerebral contusion.

Front 5

Know the definition of an acute epidural hematoma.

Back 5

Arterial bleed creates a blood-filled space between the bone and dura

Front 6

Know the pathogenesis of an acute epidural hematoma.

Back 6

-Caused by a fracture of the temporoparietal bone
a. Severance of the middle meningeal artery
b. Vessel lies between the dura and inner table of bone
-Intracranial pressure increases leading to herniation and death
-Can be lucid for several hours after trauma before loss of consciousness

Front 7

Know the clinical features of an acute epidural hematoma.

Back 7

1. Arterial bleed creates a blood-filled space between the bone and dura.
2. Intracranial pressure increases leading to herniation and death
3. Can be lucid for several hours after trauma before loss of consciousness

Front 8

Be able to recognize the gross findings of an acute epidural hematoma.

Back 8

-Caused by a fracture of the temporoparietal bone
-Can be lucid for several hours after trauma before loss of consciousness

Front 9

Know the definition of a subdural hematoma.

Back 9

Venous bleeding between the dura and arachnoid membranes
a. Most often the result of blunt trauma
• Examples- car accident, baseball bat
b. Due to tearing of bridging veins (superior cerebral veins) between brain and superior sagittal sinus (Slide 15)
c. Slowly enlarging blood clot covers the convexity of the brain.
• Clot absorbs fluid

Front 10

Know the pathogenesis of a subdural hematoma.

Back 10

Venous bleeding between the dura and arachnoid membranes
a.-Most often the result of blunt trauma
-e.g...car accident, baseball bat
b.Due to tearing of bridging veins (superior cerebral veins) between brain and superior sagittal sinus (Slide 15)
c. Slowly enlarging blood clot covers the convexity of the brain.
-Clot absorbs fluid

Front 11

Know the clinical features of a subdural hematoma.

Back 11

-Venous bleeding between the dura and arachnoid membranes
-Fluctuating levels of consciousness
-Herniation and death may occur.

Front 12

Be able to recognize the gross findings of a subdural hematoma.

Back 12

-Most often the result of blunt trauma
-Fluctuating levels of consciousness

Front 13

Subdural hematoma:

Back 13

tear of bridging veins producing venous blood clot