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TBI/SCI
NPTE Neuromuscular
Question | Answer |
---|---|
Diffuse axonal injury | disruption/tearing of axions and small blood vessels from shear strain of angular acceleration |
Focal injury | contusions, lac, mass effect from hemorrhage and edema |
Coup-contracoup injury | injury at point of impact and opposite side of impact |
Hypoxic-ischemic injury | systemic problems that compromise cerebral circulation |
Loss of consciousness resulting from blow to head | concussion |
Mild concussion syndrome | momentary LOC, maybe retrograde amnesia |
Classic concussion | LOC transient within 24h, retrograde and post traumatic amnesia |
Severe concussion | LOC for >24hr, diffuse axonal injury & coma |
Glasgow Coma Scale | 3-8 severe, 9-12 moderate, 13-15 mild |
Primary injury in SCI | interruption of blood supply |
Secondary injuries in SCI | ischemia, edema, demyelination, necrosis of axons, progressing to scar tissue formation |
Lesion level | indicates most distal uninvolved nerve root segment with normal function (3+/5) |
Tetraplegia | C1-C8, all extremities and trunk |
Paraplegia | T1-T12/L1, B LEs and trunk |
Complete SCI | no sensory or motor function below level of lesion |
Incomplete SCI | preservation of sensory or motor fxn below level of injury, spotty sensation and motor fxn |
ASIA A | complete, no motor or sensory fxn preserved in S4-5 |
ASIA B | Incomplete, sensory but not motor fxn preserved below level and includes S4-5 |
ASIA C | Incomplete, motor fxn preserved below level, most key muscles below level have grade <3/5 |
ASIA D | Incomplete, motor fxn preserved below level, most key muscles below level have grade > or = 3/5 |
ASIA E | Normal, motor and sensory function normal |
Anterior cord syndrome | loss of motor, pain, temperature. Preserved light touch, proprioception, position sense |
Brown-Sequard syndrome | IL weakness and loss of position & vibratory sense, CL pain and temperature a few segments below level of lesion |
Central cord syndrome | loss of centrally located cervical and arm tracts with preservation of more peripheral lumbar, sacral, leg tracts. Early loss of pain and temperature |
Cauda Equina | below L1. Sensory loss and paralysis with some capacity for regeneration. LMN. Autonomous or nonreflex bladder. |
Sacral sparing | sparing of tracts to sacral segments, preserves perianal sensation, rectal sphincter tone, active toe flexion |
Respiratory insufficiency or failure occurs in lesions above | C4 , phrenic nerve, C3-5 innervates diaphragm |
Spinal shock | transient period of reflex depression and flaccidity, hours up to 24wk |
Autonomic dysreflexia | EMERGENCY. Noxious stimuli PPT an autonomic reflex. S/S paroxysmal HTN, bradycardia, HA, diaphoresis, flushing, diplopia, convulsions |
Immediate tx for Autonomic dysreflexia | examine for stimuli, check catheter, elevate head |
W/C for C1-C4 | electric W/C, tilt in space, microswitch or puff&sip, respirator can be attached |
W/C for C5 | Shoulder fxn and elbow flexion intact |
W/C for C6 | Has radial wrist extensors. Manual w/c with friction hand rims, independent |
W/C for C7 | has triceps. Manual w/c, same as C6 but more propulsion |
W/C for C8-T1 and below | has hand function. Manual w/c with standard rims |
Amb/orthotics for T6-9 | sup amb for short distances, bilat KAFOs & crutches, Swing To gait |
Amb/orthotics for T12-L3 | ind in amb on all surfaces/stairs. Swing through or 4-pt gait, Bilat KAFOs and crutches. May also use RGOs. Ind HH amb, w/c use for community. |
Amb/orthotics for L4-5 | Indep amb with Bilat AFOs and crutches/canes. Ind commun amb |
CV endurance training precautions with SCI | tetraplegia and high para’s have blunted tachycardia, lack of pressor response, low VO2 peak |
Contraindications to exercise with SCI | Autonomic dysreflexia, skin infected, hypotension, UTI, uncontrolled spasticity or pain, unstable Fx, hot/humid environ |