Ch.31 Flashcards
Acceleration/deceleration injury
Head comes to a sudden stop but the brain continues to move back and forth inside the skull resulting in bruising to the brain
Anterograde amnesia
The patient is unable to remember circumstances after the incident
Basilar skull fracture
Fracture to the floor or bottom of the cranium
Battle sign
Purplish discoloration of the mastoid area behind the ear is another delayed and late sign of basilar skull fracture
Brainstem
The brains funnel shaped inferior part.
Cerebellum
Sometimes called little brain the cerebellum controls equilibrium and coordinates muscle activity
Cerebrospinal fluid
Within the skull the brain is cushioned in a dense serous substance
Cerebrum
The largest part of the brain the cerebrum comprises three fourths of the brains volume
Closed head injury
The scalp or skull can be lacerated but the skull remains intact and there is no opening to the brain
Closed skull fracture
Is an injury in which the skull is fractured but there isn’t an open wound to the overlying scalp
Concussion
Normally causes some disturbance in the brain function ranging from momentary confusion to complete loss of responsiveness
Consensual reflex
The reflex in a unstimulated eye is known as
Contusion
Or brushing and swelling of the brain tissue
Coup/contrecoup injury
Damage can be at the point of a blow to the head and/or damage on the side opposite of the blow as the brain is propelled against the opposite side of the skull
Crushing reflex
Increased systolic blood pressure and decreased heart rate
Depressed skull fracture
Occurs when the bone ends are pushed inward toward the brain
Diffuse Axonal injury
Injury to the brain that results from shearing tearing and stretching of nerve fibers
Diplopia
Double vision
Epidural hematoma
Accounts for only about 2 percent of all head injuries that require hospitalization
Extension posturing
Or decerebrate posturing
Flexion posturing
Or decorticating posturing flexing arms across the chest
Herniation
Rise in icp the brain is eventually compressed and pushed out its normal position downward toward and through the foramen magnum
Laceration
Like a contusion
Linear skull fracture
Which is the most common type resembles a line there is no gross deformity in a linear fracture and it can be diagnosed only through a radiograph
Meninges
Or layers of tissue that enclose the brain
Nonpurposeful response
Reacting to pain but not trying to stop it
Open head injury
Involves a break in the skull and a break in the scalp such as that caused by impact with a windshield or by an impaled object
Open skull fracture
Is a fracture of the skull with an associated open wound to the scalp
Purposeful response
The patient might try to move away from or remove the pain
Raccoon sign
Purplish discoloration of the soft tissues around the eyes
Retrograde amnesia
The patient is unable to remember circumstances leading up to the incident
Subdural hematoma
Is a collection of blood between the dura mater and the arachnoid layer of the brain