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Pertussis (Whooping Cough) | 마이메르시 MyMerci
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Pertussis (Whooping Cough)

NCLEX Review Guide: Pertussis (Whooping Cough)

Disease Overview & Pathophysiology

Pertussis Fundamentals

  • Pertussis is a highly contagious respiratory infection caused by Bordetella pertussis, characterized by severe paroxysmal coughing episodes.
  • The disease progresses through three distinct stages: catarrhal (1-2 weeks), paroxysmal (2-6 weeks), and convalescent (weeks to months).
  • Most severe in infants under 6 months who may not develop the classic "whoop" sound but experience apnea and cyanosis.

Memory Aid: "3 P's of Pertussis"

  • Paroxysmal cough (hallmark symptom)
  • Post-tussive vomiting
  • Prevention through vaccination

Key Points

  • Incubation period: 7-21 days (average 10 days)
  • Most contagious during catarrhal stage when symptoms mimic common cold
  • Infants have highest risk for complications and death

Clinical Manifestations & Assessment

Stage-Specific Symptoms

Stage Duration Key Symptoms Nursing Focus
Catarrhal 1-2 weeks Rhinorrhea, low-grade fever, mild cough Isolation precautions
Paroxysmal 2-6 weeks Severe coughing fits, "whoop," vomiting Airway management
Convalescent Weeks-months Gradual recovery, occasional cough Follow-up care
  • Classic "whooping" sound occurs during rapid inspiration following coughing paroxysms, but may be absent in infants and adults.
  • Post-tussive vomiting is common and can lead to dehydration and weight loss in pediatric patients.
  • Between coughing episodes, children typically appear well and may be afebrile during paroxysmal stage.

Clinical Scenario

A 3-month-old infant presents with episodes of rapid coughing followed by difficulty breathing and turning blue around the lips. The mother reports the baby has been "choking" during feeds and seems to stop breathing momentarily. This presentation is classic for pertussis in infants who may not produce the characteristic whoop.

Nursing Management & Interventions

Priority Nursing Actions

  1. Implement droplet precautions immediately - patient should remain isolated until 5 days of appropriate antibiotic therapy completed
  2. Monitor respiratory status continuously, especially for apnea and cyanosis in infants
  3. Position patient upright or in semi-Fowler's position to facilitate breathing and reduce coughing episodes
  4. Provide small, frequent meals to prevent post-tussive vomiting and maintain nutrition
  5. Administer prescribed antibiotics promptly - macrolides (azithromycin, clarithromycin) are first-line treatment

AIRWAY Memory Aid for Pertussis Care

  • Assess respiratory status frequently
  • Isolation precautions (droplet)
  • Rest between activities
  • Watch for complications
  • Antibiotics as prescribed
  • Yield small, frequent feeds

Key Points

  • Hospitalization required for infants under 6 months and those with severe symptoms
  • Antibiotics reduce transmission but may not alter disease course if started late
  • Avoid cough suppressants - they are ineffective and may worsen symptoms

Prevention & Patient Education

Vaccination & Prevention Strategies

  • DTaP vaccine series provides protection with doses at 2, 4, 6, 15-18 months, and 4-6 years of age.
  • Pregnant women should receive Tdap between 27-36 weeks gestation to provide passive immunity to newborns.
  • Close contacts require prophylactic antibiotics regardless of vaccination status to prevent transmission.

Commonly Confused: DTaP vs Tdap

Vaccine Age Group Pertussis Content Primary Use
DTaP Under 7 years Higher acellular pertussis Primary immunization series
Tdap 11 years and older Lower acellular pertussis Booster dose

Key Points

  • Immunity wanes over time - booster doses essential
  • Herd immunity protects vulnerable infants too young for vaccination
  • Healthcare workers should receive Tdap if not previously vaccinated

Quick Check & Self-Assessment

Quick Knowledge Check

  • ☐ Can you identify the three stages of pertussis?
  • ☐ Do you know when pertussis is most contagious?
  • ☐ Can you explain why infants are at highest risk?
  • ☐ Do you understand isolation precautions needed?
  • ☐ Can you differentiate DTaP from Tdap vaccines?

Common Pitfalls to Avoid

  • Don't assume all patients will have the classic "whoop" - especially infants
  • Don't delay isolation precautions while waiting for test results
  • Don't give cough suppressants - they're contraindicated
  • Don't forget to assess close contacts for prophylaxis needs

Remember: Your thorough understanding of pertussis management can save lives, especially vulnerable infants. Stay confident in your knowledge - you're preparing to make a real difference in pediatric healthcare! 🌟

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