Encephalitis | 마이메르시 MyMerci
제안하기

뭔가 하고 싶은 말이 있는거야?

0 / 2000

Encephalitis

NCLEX Review Guide: Encephalitis

Pathophysiology & Etiology

Definition & Causes

  • Encephalitis is inflammation of the brain parenchyma, most commonly caused by viral infections including herpes simplex virus (HSV), West Nile virus, and Eastern equine encephalitis.
  • Non-infectious causes include autoimmune conditions, toxins, and medications that trigger inflammatory responses in brain tissue.

Key Points

  • HSV encephalitis is the most common cause of sporadic viral encephalitis in adults
  • Mosquito-borne viruses (West Nile, Eastern equine) show seasonal patterns

Clinical Manifestations

Signs & Symptoms

  • Classic triad: fever, headache, and altered mental status ranging from confusion to coma.
  • Neurological symptoms include seizures, focal neurological deficits, personality changes, and speech difficulties.
  • Additional symptoms may include nausea, vomiting, photophobia, and neck stiffness (though less prominent than in meningitis).

Clinical Scenario

A 45-year-old patient presents with 3-day history of fever (102°F), severe headache, confusion, and new-onset seizures. Family reports personality changes and difficulty speaking coherently.

Key Points

  • Altered mental status is the hallmark sign distinguishing encephalitis from meningitis
  • Seizures occur in 50-60% of patients with viral encephalitis

Diagnostic Studies

Laboratory & Imaging

  • Lumbar puncture shows elevated white blood cells (predominantly lymphocytes), elevated protein, and normal to slightly decreased glucose.
  • CSF PCR testing identifies specific viral pathogens, with HSV PCR being highly sensitive and specific.
  • MRI brain shows characteristic temporal lobe involvement in HSV encephalitis with hemorrhagic necrosis.
  • EEG may reveal temporal lobe abnormalities and seizure activity.

Memory Aid

"VIRAL CSF" - Very high lymphocytes, Increased protein, Relatively normal glucose, And Low pressure

Nursing Management

Priority Interventions

  1. Airway protection - Monitor for decreased level of consciousness and impaired gag reflex
  2. Neurological assessments every 15-30 minutes initially, including Glasgow Coma Scale
  3. Seizure precautions with padded side rails and suction equipment readily available
  4. Monitor for signs of increased intracranial pressure (ICP)
  • Antiviral therapy: Acyclovir 10mg/kg IV every 8 hours for 14-21 days for suspected HSV encephalitis.
  • Supportive care includes fever management, fluid balance monitoring, and prevention of complications.
Critical Alert: Start acyclovir immediately when HSV encephalitis is suspected - do not wait for confirmation

Key Points

  • Early antiviral treatment significantly improves outcomes in HSV encephalitis
  • Maintain seizure precautions throughout hospitalization

Commonly Confused Concepts

Feature Encephalitis Meningitis
Primary symptom Altered mental status Neck stiffness
Brain involvement Brain parenchyma Meninges only
Seizures Common (50-60%) Less common (20-30%)
Focal deficits Frequent Rare

Memory Aid

"ENCEPH-BRAIN" - Encephalitis affects the BRAIN tissue, causing altered mental status

"MENING-NECK" - Meningitis affects meninges, causing NECK stiffness

Study Tips & Quick Checks

NCLEX Success Strategies

  • Remember the "3 A's": Airway, Acyclovir, Assessments (neurological)
  • Focus on temporal lobe involvement in HSV encephalitis questions
  • Prioritize interventions: ABC's first, then neurological monitoring

Quick Recognition

If you see: Fever + Headache + Confusion + Seizures = Think ENCEPHALITIS

Common Pitfall: Don't confuse encephalitis with meningitis - altered mental status is the key differentiator

Self-Assessment Checklist

  • ☐ Can I differentiate encephalitis from meningitis?
  • ☐ Do I know the priority nursing interventions?
  • ☐ Can I identify HSV encephalitis characteristics?
  • ☐ Do I understand when to start acyclovir?

You're building the knowledge to save lives! Master these concepts and trust your nursing judgment. Every study session brings you closer to becoming the nurse your patients need. Keep going - you've got this! 💪

다음 이론을 계속 학습하려면 로그인하세요.

로그인하고 계속 학습
컨텐츠를 그만볼래?

필기노트, 하이라이터, 메모는 잘 쓰고 있어?

내보내줘
어떤 폴더에 저장할래?

컨텐츠 노트에는 총 0개의 폴더가 있어!

폴더 만들기
컨텐츠 만들기
만들기
신고했어요.

운영진이 검토할게요!

해당 유저를 차단했어요.

마이페이지에서 차단한 회원을 관리할 수 있어요.