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Erysipelas and Cellulitis | 마이메르시 MyMerci
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Erysipelas and Cellulitis

NCLEX Review Guide: Erysipelas and Cellulitis

Pathophysiology and Assessment

Understanding Erysipelas vs. Cellulitis

  • Erysipelas is a superficial skin infection affecting the dermis and upper subcutaneous tissue, characterized by well-demarcated, raised borders and bright red appearance.
  • Cellulitis is a deeper skin and soft tissue infection involving the dermis and subcutaneous tissue with poorly defined borders and spreading inflammation.
  • Both conditions are commonly caused by Streptococcus pyogenes and Staphylococcus aureus bacteria.

Erysipelas vs. Cellulitis Comparison

FeatureErysipelasCellulitis
LocationSuperficial (dermis)Deep (dermis + subcutaneous)
BordersWell-demarcated, raisedPoorly defined, flat
AppearanceBright red, shinyRed, warm, swollen
Common sitesFace, legsLower extremities

Key Assessment Points

  • Monitor for systemic signs: fever, chills, malaise, lymphadenopathy
  • Assess for red streaking indicating lymphangitis
  • Document size, borders, and progression of affected area

Risk Factors and Prevention

High-Risk Populations

  • Patients with diabetes mellitus due to impaired immune function and poor circulation.
  • Individuals with lymphedema or venous insufficiency creating tissue vulnerability.
  • Those with skin breaks from wounds, athlete's foot, or insect bites providing bacterial entry points.

Memory Aid: "SKIN" Risk Factors

  • Skin breaks/wounds
  • Kidney disease (immunocompromised)
  • Immune suppression
  • Nutrition poor/diabetes

Nursing Interventions and Management

Priority Nursing Actions

  1. Elevate affected extremity to reduce swelling and improve lymphatic drainage.
  2. Apply warm, moist compresses to increase circulation and comfort.
  3. Administer prescribed antibiotics (typically penicillin for erysipelas, broader spectrum for cellulitis).
  4. Monitor vital signs and assess for sepsis indicators.

Clinical Scenario

A 65-year-old diabetic patient presents with a red, swollen, warm area on the lower leg with poorly defined borders. Temperature is 101.2°F. Priority nursing action: Assess for systemic infection signs, obtain blood cultures if ordered, and prepare for IV antibiotic therapy.

Critical Interventions

  • Never massage the affected area - may spread infection
  • Mark borders with pen to monitor progression
  • Maintain strict aseptic technique with wound care

Complications and Red Flags

Serious Complications

  • Necrotizing fasciitis - rapidly spreading deep tissue infection requiring immediate surgical intervention.
  • Septicemia - systemic infection manifesting as hypotension, altered mental status, and organ dysfunction.
  • Lymphangitis - red streaking from infection site toward heart indicating lymphatic involvement.

Emergency Signs Requiring Immediate Intervention

  • Rapidly expanding infection despite treatment
  • Black or purple discoloration (tissue necrosis)
  • Severe pain disproportionate to appearance
  • Signs of septic shock

Patient Education and Discharge Planning

Essential Teaching Points

  • Complete entire course of prescribed antibiotics even if symptoms improve to prevent resistance.
  • Keep affected area clean and dry, changing dressings as ordered using proper technique.
  • Report worsening symptoms immediately: increased redness, warmth, swelling, or red streaking.

Discharge Teaching Acronym: "HEAL"

  • Hygiene - keep area clean
  • Elevation - raise affected limb
  • Antibiotics - complete full course
  • Look for warning signs

Quick Assessment Checklist

  • ☐ Assessed infection borders and documented size
  • ☐ Monitored vital signs for systemic infection
  • ☐ Elevated affected extremity above heart level
  • ☐ Administered antibiotics as prescribed
  • ☐ Educated patient on warning signs
  • ☐ Assessed for complications (lymphangitis, sepsis)

Common NCLEX Pitfalls

  • Don't confuse the border characteristics - erysipelas has RAISED borders
  • Remember: NEVER massage infected tissue
  • Elevation is key for reducing edema and promoting healing

You've got this! Remember that understanding the differences between erysipelas and cellulitis, recognizing complications early, and prioritizing patient safety will help you excel on the NCLEX. Focus on the systematic assessment approach and evidence-based interventions. Your dedication to learning these concepts thoroughly will serve your future patients well!

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