Week 7 - Spinal Cord Injury Flashcards
what is a spinal cord injury
- an injury to the vertebra that affects the spinal cord
who do SCIs commonly affect
- most freq in young people between ages 15-25
- male to female ratio = 4:1
what is tetraplegia
- paralysis of both arms, leg, and the trunk
an injury to ___ causes tetraplegia
- above C8
what are the most common causes of premature death in an individual w tetraplegia related to (3)
- compromised resp function (penumonia)
- impaired renal function (UTI)
- impaired skin integrity (ulcers)
what are common causes of SCI (6)
- motor vehicle accidents
- sports injuries
- trauma
- medical conditions
- violence
- falls
SCI occurs d/t (2)
- cord compression by bone displacement, tumour, or abscesses
- interruption of blood flow to the cord
what is paraplegia
- paralysis of the legs
an injury to which part of the spinal cord causes paraplefia
- below T1
an injury to L1 and lower causez?
- paraplegia
- better trunk control
the pathophys of SCIs is best describe as ??
- biphasic
= the initial mechanical injury (primary injury) is followed by a second phase (secondary injury)
the primary injury includes
- initial mechanical injury w failure of the spinal column (fracture or dislocation) imparts force to the spinal cord
= disrupted axons, blood vessels, and cell membranes
the secondary injury involves (8)
- ongoing, progressive damage that occurs after the initial injury
- vascular dysfunction
- edema
- ischemia
- electrolyte shifts
- inflammation
- free radical production
- apoptic cell death
what is the goal in care for SCIs? how is this done (2)?
- limit further cord damage/extension of injury
1. immobilize
2. methylprednisone
how is methylprednisone given for an acute SCI? why is it given?
- bolus followed by infusion
- purpose: minimizes secondary injury by reducing inflammation
what is immobilization
- involves the maintenance of a neutral position
how can pts experiencing SCI by immobilized? (4)
- blanket or rolled towel
- aspen collar
- backboard
- cervical traction –> halo traction
describe how a pt with an SCI should be aligned and turned
- correctly aligned
- moved as a unit to prevent movement of spine
ex. log rolling
when is cervical traction used (2)
- for cervical injuries
- only when the pt can communicate changes in clinical status during application and subsequent assessment
what is the goal of cervical traction
- realignment or reduction of the injury
what does halo traction involve
- placement of a halo ring or crown that is secured into the skull with four pins
- includes subsequent additions of weight to aid in spinal realignment
how is traction provided w halo traction
- by a rope that is extended from the center of the halo crown over a pulley and has weights attached to the end
- must be maintained at all times!
once proper alignment has occur w halo traction, what happens
- a halo vest is applied to provide ongoing immbolization of the cervical spine
what is the benefit of halo vest
- stabilizes the injured area
- allows ambulation of the pt if they are neurologically intact
why is special care imp for the halo vest and halo traction (2)
- prevent skin breakdown
- prevent infection
what is included in nursing care to prveet infection at the pin sites of halo traction (2)
- clean the sites twice a day w NS
- assess for development of redness or crusting
what is included in nursing care to prevent skin breakdown r/t the halo vest and halo traction (5)
- use of special beds to provide kinetic therapy
- meticulous skin care
- remove from backboards asap to prevent coccygeal and occipital area skin breakdown
- properly fit and replace cervical collars
- assess areas under the halo vest, braces, and orthoses regularly
decsribe how the use of special beds can provide kinetic therapy
- involves continual side-to-side slow rotation, with the pt in constant motion
- turns more than 200 times per day
what is a con to kinetic therapy (2)
- can cause motion sickness
- risk of pt falling out of bed
what should be done if crusting is present on pin sites (3)
- increase freq of cleaning pin sites to 3x/day
- wrap the pin site w NS soaked gauze for 15-20 min and then remove
- using a gentle rolling motion, the crust can then be removed w a cotton-tipped applicator that has been soaked in NS
describe how to provide skin care to a pt with halo vest (6)
- have pt lie down on a bed on their side
- loosen one side of vest, place towel against the sheepskin to protect it from getting wet
- assess skin for redness and signs of skin breakdown
- dry skin thoroughly, and resecure buckle straps
- do not use lotions or powders under vest
- turn pt to opposite side and repeat the steps
in case of emergency, what should be done r/t halo vest
- keep a wrench taped to the halo vest at all times
what is the difference between a complete and incomplete spinal cord lesions
- complete = no motor or sensory function below the lvl of injury
- incomplete = some motor and sensory function preserved below lvl of injury
manifestations of SCIs are r/t?
- lvl (where on the spinal cord?) and degree of injury (complete or incomplete?
what does immediate post injury care for SCIs include (5)
- maintain patency of airway
- adequate ventilation
- adequate circulating blood vol & blood pressure to minimize extension of spinal cord damage
- immobilization
- methylprednisone
describe resp complications r/t SCIs
- closely relate to lvl of injury
describe the impact of an SCI to C1-C3 (above C4) on the resp system (3)
= total loss of resp muscle function
- often fatal
- mechanical ventilation required to keep pt alive
describe the impact of an SCI from C4-T6 on resp function (6)
- may breathe spontaneously
- may have resp insufficiency
- may have poor cough
- take small breaths
- hypoventilation w diaphragmatic breathing
- decreased vital capacity and tidal volume
SCI to what part of the spinal cord impacts the pt’s ability to cough? how? what does this increase the risk of
- cervical and thoracic injuries
- cause paralysis of abdominal muscles and often intercosta muscles = cannot cough effectively
= risk of atelectasis and pneumonia
what impact does a SCI to below T6 have on the resp system
- no resp effects
describe the impact of SCIs on resp function during the first 48 hrs
- spinal cord edema increases = resp distress may occur
describe what is included in nursing care & mngmt of resp effects of SCIs (14)
- ensure airway
- chest physio
- adequate oxygenation
- pain mngmt
- regular assessments
- assess ABGs
- DB&C
- assistive coughing
- tracheal suctioning if crackles or wheezing
- incentive spirometry
- intubation & mechanical ventilation
- assess tidal volume, vital capacity
- assess breathing patterns (esp use of accessory muscles)
- assess color and amt of sputum
describe assisted coughing
- stimulates action of the ineffective abdominal muscles during the expiratory phase of a cough
- nurse places heels of both hands below pts xiphoid process and exerts firm upwards pressure to the area
- should be timed w pts efforts to cough
what may indicate need for intubation or mechnical ventilation (3)
- if injury at or above C3
- if pt is exhuasted from labored breathing
- if ABG lvls deteriorate
what may indicate that a pt w an SCI requires immediate attention r/t the resp system
- if they cannot count to 10 out loud without taking a breathing
what are resp risks associated w SCIs(3)
- resp arrest
- pneumonia
- atelectasis
what type of SCI has a signif impact on the CVS
- any cord injury above lvl of T6
describe the impact of an SCI above T6 on CVS (5)
- decreases the influence of the SNS
= bradycardia, hypotension (d/t peripheral vasodilation), hypovolemia, decreased CO
d/t its impact on CVS, a SCI to above T6 requires? (3)
- cardiac monitoring
- if bradycardia <40 beats/min, atropine used to increase HR
- may require IV fluids or vasopressor drugs to support BP
what is included in nursing care/mngmt of a pt with SCI r/t the CVS (6)
- anticipate shock r/t decreased CO & possible hemorrhage from other injuries
- assess VS frequently
- anticholinergic (ex. atropine) for symptomatic bradycardia
- vasopressors for hypotension (ex. dopamine, NE)
- fluid replacement
- temp pacemaker
what are risks associated w the CVS impact of SCIs (3)
- postural hypotension (d/t loss of sympathetic tone)
- risk of DVT (d/t lack of muscle tone to aid venous return = sluggish blood flow)
- cardiac arrest
what can increase the risk of cardiac arrest r/t SCIs
- any increase in vagal stimulation
ex. turning and suctioning
what is included in nursing care r/t to the risk of DVTs w SCIs (4)
- DVT prophylaxis
- sequential compression devices
- admin of LMWH within 72 hrs of injury
- ROM and stretching
describe nursing care r/t SCD
- stockings should be remoevd q8h for skin care and assessment
at what point should LMWH be withheld
- morning of surgery
- continue within 24 hr postop
what can cause urinary retention r/t SCIs? (3)
- SCI to T1-L2
- acute SCI –> immediately after injury
- spinal shock