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Traumatic Brain Injury (TBI)

What is it?

Disruption in brain functioning due to external trauma to head, scalp, skull, or direct damage to brain tissue.
Focal: Localized damage
Diffuse: Widespread damage to multiple brain areas

Classification

- Primary: Injury at the time of impact (e.g., car accident, gunshot wound)
- Secondary: Changes over hours to days (e.g., ischemia, hypoxia, cerebral edema)

Types of Damage

Open (Penetrating): Object pierces skull and enters brain tissue, higher risk of infection
Closed (Blunt): External force causes brain to move within skull, higher risk of ↑ ICP

Types of Closed TBI

- Concussion: Rapid back & forth movement of brain
- Contusion: Localized bruising of brain
- Laceration: Tears in scalp without puncturing skull

Types of Hematomas

- Epidural: Bleeding between skull & dura mater (rapidly expanding due to arterial bleeding)
- Subdural: Bleeding between dura & arachnoid mater (slowly expanding due to venous bleeding)
- Subarachnoid: Bleeding between arachnoid & pia mater (most common cause: ruptured aneurysm)

Symptoms

Mild: Surface wounds, headache, dizziness
Moderate-Severe: Decreased LOC, confusion, amnesia, vision abnormalities, seizures

(CSF leakage from ears or nose may indicate skull fracture)
Cushing's Triad (late sign): Widened pulse pressure, bradycardia, irregular breathing

(warning for brain herniation)

Diagnostics

- CT Scan: Assesses for hematomas
- MRI: Assesses for brain tissue damage
- X-Ray: Assesses for skull fracture
- Glasgow Coma Scale

Treatment

Mild Injury: Supportive care (rest, OTC analgesics, monitor closely for worsening)
Medications: Anticonvulsants (treat & prevent seizures), osmotic diuretics (Mannitol for ICP), sedatives
Procedures: Ventriculostomy (drain CSF), craniectomy (part of skull temporarily removed to relieve pressure)

Nursing Interventions

Priority: Maintain airway & ICP

CLOSE MONITORING

·        Vital signs

·        ICP & neuro status

·        Respiratory Status

FREQUENT NEURO CHECKS

(LOC, Pupil Assessment and GCS)

PREVENT INCREASED ICP

·        HOB ≥30 degrees

·        Avoid valsalva maneuver (straining)

·        Decreased stimuli

·        Avoid frequent suctioning

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The Human Circulatory System and the Organs Involved

Traumatic Brain Injury (TBI)

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What is it?

Disruption in brain functioning due to external trauma to head, scalp, skull, or direct damage to brain tissue.
Focal: Localized damage
Diffuse: Widespread damage to multiple brain areas

Classification

- Primary: Injury at the time of impact (e.g., car accident, gunshot wound)
- Secondary: Changes over hours to days (e.g., ischemia, hypoxia, cerebral edema)

Types of Damage

Open (Penetrating): Object pierces skull and enters brain tissue, higher risk of infection
Closed (Blunt): External force causes brain to move within skull, higher risk of ↑ ICP

Types of Closed TBI

- Concussion: Rapid back & forth movement of brain
- Contusion: Localized bruising of brain
- Laceration: Tears in scalp without puncturing skull

Types of Hematomas

- Epidural: Bleeding between skull & dura mater (rapidly expanding due to arterial bleeding)
- Subdural: Bleeding between dura & arachnoid mater (slowly expanding due to venous bleeding)
- Subarachnoid: Bleeding between arachnoid & pia mater (most common cause: ruptured aneurysm)

Symptoms

Mild: Surface wounds, headache, dizziness
Moderate-Severe: Decreased LOC, confusion, amnesia, vision abnormalities, seizures

(CSF leakage from ears or nose may indicate skull fracture)
Cushing's Triad (late sign): Widened pulse pressure, bradycardia, irregular breathing

(warning for brain herniation)

Diagnostics

- CT Scan: Assesses for hematomas
- MRI: Assesses for brain tissue damage
- X-Ray: Assesses for skull fracture
- Glasgow Coma Scale

Treatment

Mild Injury: Supportive care (rest, OTC analgesics, monitor closely for worsening)
Medications: Anticonvulsants (treat & prevent seizures), osmotic diuretics (Mannitol for ICP), sedatives
Procedures: Ventriculostomy (drain CSF), craniectomy (part of skull temporarily removed to relieve pressure)

Nursing Interventions

Priority: Maintain airway & ICP

CLOSE MONITORING

·        Vital signs

·        ICP & neuro status

·        Respiratory Status

FREQUENT NEURO CHECKS

(LOC, Pupil Assessment and GCS)

PREVENT INCREASED ICP

·        HOB ≥30 degrees

·        Avoid valsalva maneuver (straining)

·        Decreased stimuli

·        Avoid frequent suctioning

No insights found