Spinal cord Flashcards
Which system tactile discrimination, Vibration, Pressure, proprioception
Dorsal Column/Medial Lemniscus system
Which tract discriminative pain and temperature
Lateral Spinothalamic
System controls fine movements or voluntary skilled motor activity innervation of voluntary muscles
Corticospinal System
Most common cause of spinal cord lesions
Trauma to the Spinal cord, complete or partial
Complete Spinal Cord injury
absence of sensory and motor function BELOW the lesion level
Incomplete
Partial loss of sensory and motor function BELOW the lesion. Most frequent than complete
Bilateral loss of tactile discrimination, vibration, pressure, proprioception, accompanied by ataxia
Pts with neurosyphilis
Dorsal column syndrome: bilateral loss of dorsal column. Pts with neurosyphilis
Ipsilateral loss of lateral corticospinal; and Ipsilateral loss of Dorsal column. Contralateral loss of spinothalamic tract
Brown-Sequard Syndrome
caused by MS, Stab wound, Tumor
Lateral cord lost
Dorsal column spared, BL loss of lateral corticospinal tracts, loss of ventral horn, loss of spinothalamic tracts
Anterior cord Syndrome
Infarct, ischemia trauma
2/3 of anterior cord lost
Loss of spinothalamic tracts; small lesion, 1st symptom tract across midline. BL loss of pain and temp
Loss of ventral Horn large lesion; flaccidity of upper limb
Etiology infarct ischemia trauma
Central Cord syndrome
rare, progressive congenital disorder; fluid filled cavity in Spinal cord
Central Cord syndrome
Degeneration of SC from severe vit B12 deficiency, pernicious anemia, AIDS Bilateral ataxia, bilateral spastic paralysis, bilateral loss of discriminative touch, pressure, vibration and proprioception
Posterolateral Cord Syndrome
Acute viral disease (poliomyelitis) causes bilateral flaccidity in muscles innervated by the affected SC levels
Ventral Anterior Horn syndrome
Area most vulnerable injury after impact accidents and most severe physiological effects
Acute spinal cord injury
Major cause of morbidity and mortality. Cervical and upper thoracic SCI, alveolar hypoventilation and inability to clear bronchial secretions
Acute SCI
Initially causes flaccid paralysis with loss of sensation below the level of injury, reduced vital capacity and arterial hypoxemia
Acute SCI
SC functions below the lesion are depressed or lost immediately after traumatic injury to SC
Lasts 1-3 wks
Spinal SHock
Lost or impaired; somatic and autonomic reflexes, autonomic regulation of BP, control of sweating and piloerection (erection of haris)
Spinal shock
Spinal condition causes the following constant threats; aspiration of gastric contents, pneumonia, and pulmonary embolism
Spinal Shock
Treatment of acute SCI; cervical fracture or dislocation
Halo thoracic device is more effective than neck collars
Method of intubating cervical fracture or dislocation
direct laryngoscopy with manual in line stabilization or awake ficeroptic laryngoscopy
In acute SCI; spinal fractures or dislocations what should be be avoided
Hypotension
Which neuromuscular muscle relaxant should be used in acute SCI
Nondepolarizing (Pancurium), Succycholine may be used (not in chronic SCI)
Medications used for chronic SCI
antidepressants, analgesics and baclofen for involuntary muscle spasms