Spinal Cord Injury Flashcards
Complete spinal cord injury
Eliminates all innervation below the level of injury
Incomplete spinal cord injury
Injuries that allow some function or movement below the level of injury
Five primary mechanisms that result in a spinal cord injury
Hyperflexion Hyperextension Axial loading, vertical compression Excessive rotation Penetrating trauma
Hyperflexion
The head is suddenly accelerated forward
Hyperextension
Vehicle is struck from behind, falls, chin is struck
Head moves backward
Axial loading
Vertical compression
Rotation injuries
Turning head beyond normal range
Penetrating trauma
Classified by speed of object (knife, bullet)
Secondary injuries
Hemorrhage Ischemia Hypovolemia Impaired tissue perfusion Neurogenic shock Local edema
C3-C5 innervate
Phrenic nerve- controls diaphragm
The level of injury is
The lowest neurological segment with intact or normal motor and sensory function
Tetraplegia
Paralysis of all four extremities
Quadriparesis
Weakness of all four extremities
Paraplegia
Paralysis of lower extremities
Paraparesis
Weakness in lower extremities
Spinal shock
Spinal shock syndrome
Cords immediate response to injury-
Temporary loss 48 hours or longer
Motor, sensory, reflex, autonomic function
Hypoeathesia
Decreased sensation
Hypereathesia
Increased sensation
Six point scale for motor function
0 no movement
5 normal strength
Keep BP above
90 systolic
Injuries above T6 cause
Cardiac dysfunction and loss of sympathetic input
Neurogenic shock
Hypotension
Bradycardia
Hypothermia
Areflexic (neurogenic) bladder
No reflex ability for bladder contraction
Leading to retention
Heterotopic ossification
Bony overgrowth, often into muscle