SCI Pt. 2 Flashcards
What levels are the sympathetic nervous system
T1-L1
What are the effects of the sympathetic nervous system
- Inc. HR and BP and blood flow to skeletal mm
- RELAXES bronchial mm
- (one would think it would contract them BUT if a bear was chasing you, you would want the mm to relax to increase O2 supply
At what spinal levels do you find the parasympathetic NS
Craniosacral
Which parasympathetic nerve is of primary interest
Vagus nerve
effects of the parasympathetic NS
- Dec. HR and contractility
- Inc. blood flow to smooth mm (rest and digest)
- contracts bronchial mm
What is the sympathetic effect in SCI T6 and above
dependent on level of injury (b/c it goes from T1-L1)
What is the parasympathetic effect in SCI T6 and above
remains intact and UNOPPOSED via the vagus nerve in injuries T6 and higher
Normally, sympathetic increases HR but what occurs when the sympathetic NS is no longer in tact?
therefore must rely on removing parasympathetic
What is the effect of relying on the parasympathetic removal to control heart response
- Limits cardiac output + shunting of blood from inactive active ones
- Blunting of heart rate often to only 110 -120bpm
What is autonomic dysreflexia caused by?
With what level of injury does it occur?
caused by massive sympathetic discharge from a noxious or non-noxious stimuli below level of SCI (with injuries above T6)
Autonomic dysreflexia S&S
- Increase BP of 20-30mmHg from normal
- bradycardia
- severe headache
- blurred vision
- feeling of anxiety or impending doom
- dilated pupils
- flushing, sweating skin above level of injury
- cool, dry, pale skin (d/t vasoconstriction) below level of injury
- penile erection
Common causes of autonomic dysreflexia
- urinary or colon irritation (full bladder, UTI, kink in catheter)
- wound, painful stim
- tight clothing
- sex, pregnancy and labor
- diagnostic or therapeutic interventions
Rx + prevention of autonomic dysreflexia?
- place client in upright position!
- remove noxious stim/triggers, if necessary use antihypertensive drugs
- good bladder and bowel routines
- skin care, nail care
What is orthostatic hypotensioni
Sudden drop of 20mmHg systolic BP or 10mmHg diastolic BP upon changing positions
Orthostatic Hypotension S&S
o Asymptomatic
o Dizziness, fainting
o Light headedness
o Headache
Orthostatic Hypotension Rx
o mobilize slowly w/ therapy
o use compression stocking or binders
4 Health Risks with SCI
- DVT & Pulmonary embolism
- Heterotrophic ossification
- Osteoporosis
- Post traumatic Syringomyelia
What is DVT + Pulmonary embolism with SCI caused by
Venous stasis
Transient hypercoaguable state
DVT + Pulmonary embolism with SCI Signs
Sudden LE swelling + increase in temp
DVT +Pulmonary embolism with SCI prevention
- Anticoagulation meds
- Compression stockings
- Sequential compression devices
- PROM/AROM
- Early mobilization
Heterotrophic ossification w/ SCI S&S
- Pain (if sensory sparing)
- INc. spasticity
- warmth, low grade fever
- erythema
- local swelling
- sudden decrease in ROM with an abnormal firm or hard end-feel
Heterotrophic ossification w/ SCI Rx
+ 2 main contraindication for Rx
- PROM within tolerable range- mobilize as able
- Meds
- Surgery if long standing
Contraindications:
are forced PROM and serial casting
What causes OP in SCI
rapid increase calcium excretion within few days of SCI