11 JULY Flashcards
touch and proprioception present how when there is damage in the sp. cord?
contralaterally
opposite
cross in the medulla
touch/proprioception cross where?
the medulla
when there is damage in a vertical tract list the three things it presents:
- descend/ ascend
- no motor can descend
- no autonomic control can descend
- no sensory can ascend past
how does a vertical tract present in the body?
contralaterally
autonomic loss presents as
impaired shunting: increase venule/artery constriction impaired sweating: cuts off sweating
impaired capacitance: cuts off b&b
anterior cord syndrome presents:
no motor
no pain / temp
YES disc. touch / proprioception
central cord syndrome;
no pain / temp
no motor
YES disc. touch/ proprioception
cauda equina injury is what type of motor neuron injury:?
LMN
cauda equina injury presents damage to teh
peripheral autonomic preganglion SNS & PNS
cauda equina s/s include
- atrophy denervation
- no voluntary Mm control
- hyporeflexia: reflex loop itself has been cut
brown sequard syndrome: hemi section presents how?
no disx. touch no motor fx no pain / temp IPSLATERALLY so no on the affected side yes on the other
complete SCI:
no motor or sensory
incomplete SCI:
partial dependent on what you got
neurological fx of SCI:
mmt above the 3/5
functional SCI:
MMT above 3+ / 5
two abnormal interneuron activity with a SCI: :
exaggerated withdrawal reflex
phasic stretch hyperreflexia
what happens to the reflexes: withdrawal / phasic in a SCI?
they get exaggerated / hyperreflexic
myoplasticity of an SCI includes?
atrophy (sp. cord = disuse / cauda equina = denervation)
fibrosis
contractures
cauda equina list the five s/s
- atrophy of denervation
- no voluntary Mm
- loss of bowel and bladder
- hyporeflexic
- sensory sets cut = dermatomal loss
a spastic bladder is another name for a
hyperreflexic bladder
a hyperreflexic bladder is when
the bladder is cut above the scaral
has singals to say full but
no control so empties whenever
- empties too much = hyper
a flaccid bladder is another name for
hyporeflexic bladder
a hyporeflexic bladder is when
the bladder is ut from S2-S5 and doesn’t know its been cut
- fills, but can’t release so leaks out of spinchter
list the four most common causes of SCI
MVA
sport injuries
falls
penetrating wounds
spinal shock is when
there is a period of time after the SCI where everything below lesion is turned off: LMN shuts down non fx
= over time wears off and becomes hyperreflexic
three bad things that happens with a SCI: ( with loss of autonomic control)
autonomic dysreflexia
impaired temperature
orthostatic hypotension
orthostatic hypotension is when
you have impaired “ capactance” can’t squeeze venules low BP all the time
impaired “muscle pump” blood cooling in the muscles
you have two things impaired in orthostatic hypotension =
“capactance” - squeezing venules
“muscle pump” - cooling blood down
impaired temperature is due to
impaired shunting
impaired sweating
autonomic dysreflexia is due to
unchecked fight or flight response to a visceral pain
