head injury

1. Head Injury

2. Head Injury
• Any trauma to the scalp, skull, or brain
• Head trauma includes an alteration in
consciousness no matter how brief

3. Head Injury
• Causes
– Motor vehicle accidents
– Firearm-related injuries
– Falls
– Assaults
– Sports-related injuries
– Recreational accidents

4. Head Injury
• High potential for poor outcome
• Deaths occur at three points in time after
injury:
– Immediately after the injury
– Within 2 hours after injury
– 3 weeks after injury

5. Head Injury
Types of Head Injuries
• Scalp lacerations
– The most minor type of head trauma
– Scalp is highly vascular  profuse
bleeding
– Major complication is infection

6. Head Injury
Types of Head Injuries
• Skull fractures
– Linear or depressed
– Simple, comminuted, or compound
– Closed or open
– Direct & Indirect
– Coup & Contrecoup

7. Head Injury
Types of Head Injuries
• Skull fractures
– Location of fracture alters the
presentation of the manifestations
– Facial paralysis
– Conjugate deviation of gaze
– Battle’s sign

8. Head Injury
Types of Head Injuries
• Basal Skull fractures
– CSF leak (extravasation) into ear (Otorrhea)
or nose (Rhinorrhea)
– High risk infection or meningitis
– “HALO Sign (Battle Sign)” on clothes of
linen
– Possible injury to Internal carotid artery
– Permanent CSF leaks possible

9. Battle’s Sign
Fig. 55-13

10. Nursing Care of Skull
Fractures
• Minimize CSF leak
– Bed flat
– Never suction orally; never insert NG tube; never use Q-Tips
in nose/ears; caution patient not to blow nose
• Place sterile gauze/cotton ball around area
• Verify CSK leak:
– DEXTROSTIX: positive for glucose
• Monitor closely: Respiratory status+++

11. Head Injury
Types of Head Injuries
• Minor head trauma
– Concussion
• A sudden transient mechanical head
injury with disruption of neural activity
and a change in LOC
• Brief disruption in LOC
• Amnesia
• Headache
• Short duration

12. Head Injury
Types of Head Injuries
• Minor head trauma
– Postconcussion syndrome
• 2 weeks to 2 months
• Persistent headache
• Lethargy
• Personality and behavior changes

13. Head Injury
Types of Head Injuries
• Major head trauma
– Includes cerebral contusions and
lacerations
– Both injuries represent severe trauma
to the brain

14. Head Injury
Types of Head Injuries
• Major head trauma
– Contusion
• The bruising of brain tissue within a focal
area that maintains the integrity of the pia
mater and arachnoid layers
– Lacerations
• Involve actual tearing of the brain tissue
• Intracerebral hemorrhage is generally
associated with cerebral laceration

15. Head Injury
Pathophysiology
• Diffuse axonal injury (DAI)
– Widespread axonal damage occurring
after a mild, moderate, or severe TBI
– Process takes approximately 12-24
hours

16. Head Injury
Pathophysiology
• Diffuse axonal injury (DAI)
– Clinical signs:
•  LOC
•  ICP
• Decerebration or decortication
• Global cerebral edema

17. Head Injury
Complications
• Epidural hematoma
– Results from bleeding between the
dura and the inner surface of the skull
– A neurologic emergency
– Venous or arterial origin

18. Head Injury
Complications
• Subdural hematoma
– Occurs from bleeding between the
dura mater and arachnoid layer of the
meningeal covering of the brain

19. Epidural and Subdural Hematomas
Fig. 55-15
Epidural Hematoma
Subdural Hematoma

20. Head Injury
Complications
• Subdural hematoma
– Usually venous in origin
– Much slower to develop into a mass
large enough to produce symptoms
– May be caused by an arterial
hemorrhage

21. Head Injury
Complications
• Subdural hematoma
– Acute subdural hematoma
• High mortality
• Signs within 48 hours of the injury
• Associated with major trauma (Shearing
Forces)
• Patient appears drowsy and confused
• Pupils dilate and become fixed

22. Head Injury
Complications
• Subdural hematoma
– Subacute subdural hematoma
• Occurs within 2-14 days of the
injury
• Failure to regain consciousness may
be an indicator

23. Head Injury
Complications
• Subdural hematoma
– Chronic subdural hematoma
• Develops over weeks or months after
a seemingly minor head injury

24. Head Injury
Diagnostic Studies and
Collaborative Care
• CT scan considered the best diagnostic test to
determine craniocerebral trauma
• MRI
• Cervical spine x-ray
• Glasgow Coma Scale (GCS)
• Craniotomy
• Craniectomy
• Cranioplasty
• Burr-hole

25. Head Injury
Nursing Management
Nursing Assessment
– GCS score
– Neurologic status
– Presence of CSF leak

26. Head Injury
Nursing Management
Nursing Diagnoses
– Ineffective tissue perfusion
– Hyperthermia
– Acute pain
– Anxiety
– Impaired physical mobility

27. Head Injury
Nursing Management
Planning
– Overall goals:
• Maintain adequate cerebral perfusion
• Remain normothermic
• Be free from pain, discomfort, and
infection
• Attain maximal cognitive, motor, and
sensory function

28. Head Injury
Nursing Management
Nursing implementation
Health Promotion
• Prevent car and motorcycle accidents
• Wear safety helmets

29. Head Injury
Nursing Management
Nursing implementation
Acute Intervention
• Maintain cerebral perfusion and
prevent secondary cerebral ischemia
• Monitor for changes in neurologic
status

30. Head Injury
Nursing Management
Nursing implementation
Ambulatory and Home Care
• Nutrition
• Bowel and bladder management
• Spasticity
• Dysphagia
• Seizure disorders
• Family participation and education

31. Head Injury
Nursing Management
Evaluation
Expected Outcomes
• Maintain normal cerebral perfusion
pressure
• Achieve maximal cognitive, motor, and
sensory function
• Experience no infection, hyperthermia,
or pain