Systems Final T3 Flashcards
Response to CNS damage that may persist for weeks or months after brain injury. Astrocytes migrate to the site of neuronal death, clustering together to create a soft scar structure which is called…
Gliosis
A.k.a astrocytosis, astrocitic gliosis
These myelinate axons in the CNS and are what get attacked in MS
Oligodendrocytes
Diminished sensation; the experience matched the nature of the stimulus but is less strong than expected. Lay term is numbness.
Hypaesthesia
Heightened or exaggerated sensation; the experience accurately matches the stimulus, but produces an exaggerated or unexpectedly strong response.
Hyperaesthesia
Define paraesthesia
Abnormal sensation e.g pins & needles, bugs crawling on skin
The sensation experience does not correlate with the stimulus
Define Dysaesthesia
When a paraesthesic sensation is painful e.g hot pokers, electric burning
Instead of the expected sensation, an innocuous stimulus results in pain. A usual pain experience is being created in response to a normally non-nociceptive stimulus. E.g feather like touch
Allodynia
Define hypalgesia
The response to a nociceptive stimulus is weak
Heightened sensitivity to painful stimuli. The person experiences an unexpectedly strong pain intensity as compared to the predicted response to stimulus. Often there is a continuation of the pain after the stimulation has ceased.
Hyperalgesia a.k.a hyperalgia
Rigidity is a manifestation of…
Basal ganglia dysfunction
What are some important treatment goals when working with rigidity in limbs.
- general relaxation; lowering sympathetic activation
- optimizing perfusion and draining; improve circulation
- reduce/minimize contracture
- MET/muscle fatigue in the target muscles to reduce tone
- using reflex techniques
What may be a reason for adapting positions while treating rigidity?
Rigidity can affect breathing muscles. A patient may have dysphasia or breathing difficulties, so adaptations may need to be made so the patient can feel comfortable and at ease. With dysphasia lying completely flat may promote choking.
What is the most effective reflex technique to for rigidity? What is the least effective?
- GTO release, light vibrations and stroking
- reciprocal inhibition, antagonist contraction techniques etc also mm approx
Sensory overload can help renormalize reflex sensitivity. This can be a combination of touch/pressure, movement and temperature.
True or false: Minimizing contracture and maximizing jt health are both key treatment aims when treating rigidity.
True