Traumatic Brain Injury – classified as mild, moderate or severe based on GCS
Concussion
Cerebral contusion (intracerebral haemotoma)
Subarachnoid Haemorrhage
Subdural Haemorrhage
Epidural Haemorrhage
Diffuse axonal Injury
PAMD
Preparation
Assessment – Primary Survey
Management
Assessment – Secondary Survey
Dislocation
Preparation
Staff
Equipment
Assessment – Primary Survey – ABCDE
Airway – Patent and Protected
Foreign bodies
Facial, mandibular, or tracheal/laryngeal fractures
Remember If the patient is able to communicate verbally, the airway is usually patent.
Breathing – Look, listen, feel
Identify any life-threatening conditions affecting thorax
Tension pneumothorax
Flail Chest
Side note Ventilation may be reduced for a number of reasons, (1) diaphragm fatigue, (2) Progressively ascending spinal cord damage from primary damage or secondary ascending spinal cord oedema encroaching on C3-C5, (3) These same segments may be involved from primary injury and diaphragm may be partially paralysed and (4) Consequence of co-existing chest trauma.
Circulation
HR, BP, Capillary refill, skin colour
Look for signs of shock or unstable rhythm
Hypotensive trauma victims should be considered as intravascularly volume depleted and bleeding until proven otherwise
Disability
GCS
Pupils – equal and reactive
Neurological examination – motor and sensory
Suspect C-spine injury until ruled out
Check for signs of ↑ICP – Cushing’s response (bradycardia, hypertension, irregular respirations)
Remember A dilated pupil in an unconscious patient with head trauma is evidence of transtentorial herniation caused by downward pressure on the uncus and ipsilateral 3rd cranial nerve.
Exposure/Environment
Increased risk of hyperthermia due to peripheral vasodilation
Look for other injuries
Fractures – Basilar skull fracture?
Scalp laceration
Burns
Warning Signs of Severe Head Injury
GCS <8
Deteriorating GCS
Unequal pupils
Lateralizing signs
INVESTIGATIONS
Laboratory
Imaging
FBC
X-Ray – Neck, Thorax, Pelvis
EUC
Head CT scan (non-contrast)
Cross match
Ultrasound (FAST)?
Urinalysis
MRI – axonal injury is suspected
Pregnancy test
Angiogram?
Serum lactate
Glucose
Management-The aim is to reduce secondary brain injury
Airway – Patent and Protected
Insertion of nasogastric tube important to minimise likelihood of aspiration
Ensure oxygen delivery to brain through intubation and prevent hypercarbia
Intubate if GCS < 9, patient is hypoxic, injury at or above C4′
Oxygen!
Remember Avoid secondary brain injury by preventing hypotension, hypoxia, fever, seizures and hyperglycaemia.
Breathing – Look, listen, feel
Consider diaphragm issues (injury at C3, C4, C5)
Identify and treat life threatening chest injury
In the absence of major airway obstruction and flail chest, the presence of paradoxical breathing is considered highly suggestive of cervical spine injury
Circulation
Look for signs of shock or unstable rhythm
2 large IV insertion
If hypotensive – IV crystalloids, avoid albumin
If seizure/risk – benzodiazepines, phenytoin, phenobarbital
Disability
GCS
Pupils – equal and reactive
Neurological examination – motor and sensory
Spinal immobilisation until spinal cord or unstable vertebral injury has been excluded on physical examination and investigations (using nexus criteria as an example)
If signs of increased intracranial pressure
Calm (sedate) if risk for high airway pressures or agitation – paralyze if agitated
Elevate head of bed
Hyperventilate (100% O2) to a pCO2 of 30-35 mmHg
Adequate BP to ensure good cerebral perfusion
Mannitol 1g/kg infused rapidly (contraindicated in shock/renal failure
Surgical – decompression, drainage
Remember for raised ICP make sure to control perfusion, glucose, temperature and seizures.
Exposure/Environment
Increased risk of hyperthermia due to peripheral vasodilation
Warm IV fluids
Warm blankets
Look for other injuries
Remember Consult the neurosurgeon early and aggressively treat hypoxia, hypotension, herniation, and seizures to avoid secondary (preventable) injuries.
Early and Late signs of Head trauma
Assessment– Secondary Survey (Head to Toe) – Once patient is stabilised
Discussion