Neuro Trauma Flashcards
What are they two categories of brain injuries
Primary
Secondary
Define Primary injury
Primary injury occurs at the time of the trauma
Define Secondary injury
The indirect additional complications that occur later on that plays a large role in brain damage and death
- hours or even days later
Primary injury examples (5)
Contusion
Epidural Hematoma
Subdural Hematoma
Traumatic Subarachnoid Hemorrhage
Diffuse Axonal Injury
Define Diffuse Axonal Injury
Brain rapidly shifts inside the skull and causes shearing of axons
What state are those with Diffuse Axonal Injury left in typically?
Coma
Doctor recommends to do a CT and MRI for diffuse axonal injury. What do you know about this and what does that mean for the nruse?
Diffuse axonal injury is hard to detect on MRI and CT - which means nurse assessment has to be really good.
Symptoms of diffuse axonal injury?
Coma
Confusion
N/V
T/F
Secondary brain injury is not preventable
False. We can prevent this
What is the focus of care when it comes to minimizing secondary injury?
Increasing oxygen blood to brain
Decreasing metabolic demands
Why do we want to prevent hypoxemia in a patient who has a primary head injury?
If there isn’t enough oxygen in the blood, it increases chance of secondary head injury.
Why avoid hypotension to avoid a secondary brain injury?
We don’t want there to be hypotension because that can affect how well we perfuse the brain and thus cause the secondary injury.
Why do we need to focus on the blood sugar needs after a patient has a primary head injury?
Focus on controlling blood sugar to avoid a secondary head injury
What is meant “respond to loss of auto regulatory mechanisms” if a patient has a primary head injury?
Sometimes people’s compensation skills don’t work, and so it is our job to use medications like pressors, diuretics, hypertonics, etc to try to manipulate it
- loss of compensation like temp, BP, Hr changes
Why do we want to avoid increased ICP after having a primary brain injury?
Increased ICP can cause a secondary injury to occur
Why do we want to control the Co2 levels after a patient has a primary head injury?
The CO2 dictates the constriction/dilation of the vessels and can cause a secondary head injury if not monitored.
What is the most important indicator of neuro severity and how do we assess it?
LOC changes - which we assess for with the Glasgow Coma Scale
Mild Traumatic Brain Injury GCS score
13-15 = mild
Moderate Traumatic Brain Injury GCS score
9-12 = moderate
Severe Traumatic Brain Injury GCS score
Less than 8
What is the nature of deficits for a mild TBI?
Functional deficits that lasts weeks or months but usually come back
Diagnostic testing for Hematomas
Blood pooling bruise. CT
Diagnostic testing for Hemorrhage/Bleeding
CT
Diagnostic testing for fractures
CT
Diagnostic testing for cerebral edema
CT
Diagnostic testing for severe diffuse axonal injury
MRI - but only if the DAI is severe. A lot of times they don’t show up.
Diagnostic testing for brain stem injury and hernation
MRI
Diagnostic testing for aneurysm
MRI - due to the vessel bulging
What is the danger of an aneurysm?
As the bulge grows, it can hemorrhage and then you have a stroke on your hands.
What other injuries do we use diagnostic testing for that can be related to the cause of the TBI?
Other bone fractures. Or really anything.
What nursing care will you provide to a patient with a TBI that address respiratory needs?
Airway Management
Oxygenation
Ventilation
Explain why you will be managing the patients airway for a TBI
Brain injuries can affect the patients ability to maintain their own airway - so again, we want to avoid secondary injury.
Why would you be giving a patient oxygen for a TBI?
The TBI may affect their ability to oxygenate themselves but also, the brain needs oxygen to avoid a secondary injury.
Why might a patient with a TBI be on a vent?
The TBI can affect someone’s ability to oxygenate themselves and it could be so bad that they need the vent to breathe but also avoid secondary injury.
What nursing care will you provide to a TBI patient that addresses the needs of the brain related to volume?
Manage fluids
Manage ICP
Support cerebral perfusion
TBI patient asks why they need to be on fluids. What do you tell them?
The fluids can be contributing to either their perfusion or it can be taking volume off.
- depends on what the brain needs atm
Why do you do ICP management on a TBI patient?
Increased ICP can contribute to injury and even death.
Why do we manage the cerebral perfusion?
Manage cerebral perfusion because it is what keeps the brain oxygenated and full of blood.
What med can support CPP?
Dopamine etc / pressors
Why will we want to prevent an increase in oxygen demand in an ICP patient?
Prevent the need for more oxygen because the brain is already working hard to keep itself oxygenated after a TBI
How can we prevent increased cerebral oxygen demand?
Sedation meds
What is a secondary complication that can come with any head injury - primary or secondary - related to care?
Pneumonia, PE, DVT, skin integrity
- just because they will be immobile
How do check for the pneumonia & PE?
Anticoagulation
Lung sound assessments
- especially if they’re sedated. Diminished lung sounds are bad
How often do we turn patients?
q2hrs
Why do we have to educate the family and be there for them with a TBI?
Brain injuries are often acute because of an accident
Linear fracture
Generally not displaced. More like a hairline fx that heals on its own
Depressed fracture
Inward depression of the bone which needs surgical removal
Basilar fracture
Symptom?
Back Base of the skull is involved.