Head Injury Head Injury Any trauma to the
- Slides: 31
Head Injury
Head Injury • Any trauma to the scalp, skull, or brain • Head trauma includes an alteration in consciousness no matter how brief
Head Injury • Causes – Motor vehicle accidents – Firearm-related injuries – Falls – Assaults – Sports-related injuries – Recreational accidents
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
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
Head Injury Types of Head Injuries • Skull fractures – Linear or depressed – Simple, comminuted, or compound – Closed or open – Direct & Indirect – Coup & Contrecoup
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
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
Battle’s Sign Fig. 55 -13
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+++
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
Head Injury Types of Head Injuries • Minor head trauma – Postconcussion syndrome • 2 weeks to 2 months • Persistent headache • Lethargy • Personality and behavior changes
Head Injury Types of Head Injuries • Major head trauma – Includes cerebral contusions and lacerations – Both injuries represent severe trauma to the brain
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
Head Injury Pathophysiology • Diffuse axonal injury (DAI) – Widespread axonal damage occurring after a mild, moderate, or severe TBI – Process takes approximately 12 -24 hours
Head Injury Pathophysiology • Diffuse axonal injury (DAI) – Clinical signs: • LOC • ICP • Decerebration or decortication • Global cerebral edema
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
Head Injury Complications • Subdural hematoma – Occurs from bleeding between the dura mater and arachnoid layer of the meningeal covering of the brain
Epidural and Subdural Hematomas Epidural Hematoma Subdural Hematoma Fig. 55 -15
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
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
Head Injury Complications • Subdural hematoma – Subacute subdural hematoma • Occurs within 2 -14 days of the injury • Failure to regain consciousness may be an indicator
Head Injury Complications • Subdural hematoma – Chronic subdural hematoma • Develops over weeks or months after a seemingly minor head injury
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
Head Injury Nursing Management Nursing Assessment – GCS score – Neurologic status – Presence of CSF leak
Head Injury Nursing Management Nursing Diagnoses – Ineffective tissue perfusion – Hyperthermia – Acute pain – Anxiety – Impaired physical mobility
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
Head Injury Nursing Management Nursing implementation Health Promotion • Prevent car and motorcycle accidents • Wear safety helmets
Head Injury Nursing Management Nursing implementation Acute Intervention • Maintain cerebral perfusion and prevent secondary cerebral ischemia • Monitor for changes in neurologic status
Head Injury Nursing Management Nursing implementation Ambulatory and Home Care • Nutrition • Bowel and bladder management • Spasticity • Dysphagia • Seizure disorders • Family participation and education
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
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