Lecture SCI - Secondary Pathologies Flashcards
2° Complications of SCI
Cardiovascular/Respiratory Integumentary Neurological Musculoskeletal Somatosensory GI/GU
Cardiovascular/Respiratory 2° Complications of SCI
6
Cardiac Arrhythmias Orthostatic hypotension Altered thermoregulation Autonomic Dysreflexia DVT/PE Respiratory Dysfn
Integumentary 2° Complications of SCI
Decubitus Ulcers
Neurological 2° Complications of SCI (2)
Spasticity
Syringomyelia
Musculoskeletal 2° Complications of SCI (4)
Osteoporosis
Fractures
Contractures
Heterotopic Ossification
Somatosensory 2° Complications of SCI (2)
Pain
Reflex Sympathetic Dystrophy
GI/GU 2° Complications of SCI
Bowel and Bladder Dysfunction
Altered Sexual Function
What is the single greatest factor leading to increase in hospital stay in patients with a spinal cord injury
Development of Decubitus ulcers
What type of WC would you use for a SCI and why would you not want the other kind
A tilt in space
Would not want a reliciner bc you would start sliding and will create a shear force
Cardiovascular Complications is from
Interruption btw receptor organs & brainstem
Interruption to ANS
Neurogenic Shock
What is the classic triad to neurogenic shock
- Hypotension –
due to loss of sympathetic tone (↓ systemic vascular resistance, & dilation of veins)
Hypovolemia (due to severe hemorrhage, inadequate fluid administration) - Bradycardia - heart less efficient and pumps slower - movement allows the heart to work a bit harder and pump better
- Hypothermia
What is Hypovolemia
Part of the classic triad of neurogenic shock
Due to severe hemorrhage, inadequate fluid administration
(Low volume)
How does orthostatic hypotension happen and what can be done to reduce it
orthostatic hypotension this can happen from supine to sitting bc you have an increase in demand in blood flow to the brain you make them move to make sure they dont pass out - the muscle pump is effective
Why would you use a tilt table?
to progressively help someone while they are sitting up
Graded upright positioning is the PT intervention of choice (i.e. ↑ HOB, recliners, tilt-in-space w/c, tilt table) 🡪 close BP monitoring!
If the tilt table doesn’t work to help orthostatic hypotension what else can be used?
compression garments
Pressure garments (TEDS & abdominal binders) May teach the Valsalva maneuver as preventative measure, but with much caution
How would someone present with Orthostatic hypotension
dizzy, pale and dry skin
Why do cardiac arrhythmias happen and what is the most common type
Also what makes it worse and when would it improve
Due to loss of sympathetic tone & unopposed vagal tone
Most common arrhythmia = Bradycardia
Worsened by stimulation of vagus n. (i.e. during tracheal suction, turning to prone, defecation)
Improves w/in a few weeks as spinal shock resolves
Which nerve is responsible for bradycardia and what does this nerve do
The vagus nerve
It is the longest of the cranial nerves, extending from the brainstem to the abdomen by way of multiple organs including the heart, esophagus, and lungs. Also known as cranial nerve X,the vagus forms part of the involuntary nervous system and commands unconscious body procedures, such as keeping the heart rate constant and controlling food digestion
How does the vagus nerve get stimulated
During tracheal suction, turning to prone, defecation
cardiac arrhythmias are due to
loss of sympathetic tone & unopposed vagal tone
What happens to thermoregulation with a SCI
it becomes altered
↓ thermoregulation below level of lesion
s/p SCI: the connection between the ANS & the cord is interrupted
How would a SCI pt present with altered thermoregulation
The patient will be unable to sweat when warm or shiver when cold below the level of the lesion
How does normal thermoregulation happen
Hypothalamus sends impulses via autonomic pathways to the cord, then through sympathetic outflow to the skin, initiating compensatory reactions to ↑ or ↓ temperature
Why do you have to make sure people are aware of altered thermoregulation
The higher the lesion, the greater the proportion of the body that is unable to maintain safe temperature
What SCI level is at risk for altered thermoregulation?
Above T5
What is altered thermoregulation called above T5?
Poikilothermic
Poikilothermic
Above T5
core temp adapts to temp of environment (can be misinterpreted as febrile)
Someone with altered thermoregulation should do what when they are working out and what should they do when the weather is cold
Should ice after strenuous activity to cool down, or dress warmly in cold weather
Why do we have to be aware of poikilothermic?
When we exercise we increase the temp of the core and the environment. These people get really warm and light headed
What are the 2 things that you worried about when working with a SCI?
Orthostatic hypertension and autonomic dysreflexia
Autonomic Dysreflexia aka, presents as, and what level of injury
Autonomic Hyperreflexia
Affects individuals with lesions >T6 level, where an uncontrolled reflex sympathetic discharge causes:
severe hypertension (>15-20 mmHg ↑ in SBP)
heart rate changes (typically reflexive bradycardia)
severe sweating & flushing
severe headache
piloerection
blurry vision
shivering
How is the treatment of Orthostatic hypertension and autonomic dysreflexia either the same or different?
How we treat them is very different. Orthostatic Hypertension, we would lay them back down and with someone has autonomic dysreflexia you have to keep them sitting up. (this is very important)
What do you have to avoid with autonomic dysreflexia
You want to avoid laying them down as much as possible. because they have Hypertension and a sympathetic reflex that tend to increase as they are lying down
keep them sitting up - avoid laying them down as much as possible, it increases as you lie back down
Signs of orthostatic hypertension:
Dizzy, skin is pallor, they get dry skin - if you see this you would immediately lie them back down (if you know the person well maybe take their BP and see if they adapt)
Signs of autonomic dysreflexia:
red face, HR dec. BP inc. they start sweating, severe HA and etc
Is autonomic dysreflexia serious
Consequences can be severe or even fatal!
Causes of autonomic dysreflexia
Caused by a noxious stimulus below the level of lesion (pt unaware 20 lack of sensation):
Blockage of urine output (kinked catheter or overflowing bag) Impacted bowel Pressure ulcer Ingrown toenail Tight clothing Fracture
Potential complications of autonomic dysreflexia
retinal hemorrhage, SAH, ICH, MI, Sz, death!
How would Autonomic Dysreflexia usually occur?
It occurs do to some restriction in their body. ie: wearing a belt, tight clothing or shoes you have to loosen them
Why do you have to loosen the clothing of someone who has autonomic dysreflexia?
Body is misreading the stimulus as noxious and responding very aggressively
What do you do if patient is going through autonomic dysreflexia
What do you do if patient is going through autonomic dysreflexia
1st thing - sit them up
2nd- look of restriction
3rd- if autonomic dysreflexia continues and BP does not drop it is a medical emergency - you will have to call for help
Autonomic Dysreflexia prevention
Early education of patient & caregivers
Symptom recognition
Immediate interventions
Is risk of PE by level
risk of PE is not by level but rather it is affected by amount of movement you do. that is why it is important to get people moving passively and actively and active assist as much as we can