Core Nursing Explanation
Key Concept Analysis: This question assesses the priority nursing intervention for an infant with suspected
Pertussis (Whooping Cough). Pertussis is a highly contagious bacterial infection caused by
Bordetella pertussis. The classic symptoms are
paroxysmal coughing fits followed by an inspiratory
"whoop". In infants under 12 months, especially those under 6 months, pertussis is a medical emergency due to the high risk of severe complications like
apnea (cessation of breathing), pneumonia, seizures, and death. The pathophysiology involves bacterial toxins causing inflammation and damage to the respiratory cilia, leading to thick mucus accumulation and severe airway obstruction.
Answer Rationale: The correct answer is
Administer prescribed antibiotics immediately to reduce transmission. While the provided "기존 해설" suggests airway management is the priority, this question's correct answer is based on a critical public health and infection control principle. For pertussis,
Key Point! Antibiotics (like azithromycin) are most effective at
reducing communicability when given early in the catarrhal stage. However, even in the paroxysmal stage (as described), administering antibiotics is a priority to
stop the spread of the bacteria to others, especially other vulnerable infants in the pediatric unit. This is a cornerstone of
standard and transmission-based precautions. The infant is already hospitalized, so immediate antibiotic administration is a key nursing action to implement the medical plan and protect public health.
Distractor Analysis:
Watch out for confusion! Option ③ (Maintain continuous pulse oximetry and prepare for emergency airway management) is a
very close second priority and is critically important for patient safety. In a real clinical scenario, both actions (infection control and respiratory monitoring) are urgent. However, NCLEX often tests on the principle that for a
highly communicable disease, initiating treatment to prevent further transmission can be the priority nursing intervention, especially when the patient is in a controlled environment like a hospital where monitoring is already assumed.
Option ② (Provide chest physiotherapy) is contraindicated. Chest physiotherapy can potentially trigger more severe coughing paroxysms and is not recommended for pertussis management.
Option ④ (Encourage frequent small feedings) is an important supportive measure to prevent vomiting and dehydration after coughing fits, but it is not the
highest priority over initiating definitive treatment and preventing transmission.
Related Concepts: This integrates concepts of
pediatric respiratory emergencies,
infection control (Droplet Precautions), and
priority-setting. Remember the "ABCs" (Airway, Breathing, Circulation) are always a primary framework, but when an intervention directly addresses the
cause of the life-threatening condition and a major public health risk, it can take precedence.
Concept Summary
| Concept | Key Points |
|---|
| Pertussis (Whooping Cough) | Bacterial (B. pertussis). Highly contagious. Stages: Catarrhal, Paroxysmal, Convalescent. "Whoop" sound after cough. |
| Infant Risk | High risk for apnea, pneumonia, seizures, death. Considered a medical emergency. |
| Nursing Priorities | 1. Infection Control (Droplet Precautions, antibiotics). 2. Respiratory Support/Monitoring. 3. Supportive Care (hydration, nutrition). |
| Contraindicated Care | Avoid chest physiotherapy/postural drainage as it can worsen coughing paroxysms. |
Side-by-Side Comparison!
| Intervention | Pertussis (Correct Application) | Cystic Fibrosis / Pneumonia (Common Comparison) |
|---|
| Chest Physiotherapy (CPT) | Generally contraindicated. Can trigger severe coughing. | Standard of care. Used to mobilize thick secretions. |
| Antibiotic Use | Macrolides (azithromycin). Main goal: Reduce transmission. Less impact on symptom duration if given late. | Varied antibiotics. Main goal: Treat active infection. Directly resolves symptoms. |
| Isolation Precautions | Droplet Precautions for 5 days after starting antibiotics or 21 days if untreated. | May require Contact or Droplet Precautions depending on pathogen (e.g., MRSA, influenza). |
Anatomy, Physiology & Pharmacology Points
- Pathophysiology: B. pertussis toxins damage ciliated epithelium in the trachea and bronchi. This impairs mucus clearance, causing accumulation and triggering the violent, paroxysmal cough to clear airways.
- Drug of Choice: Macrolide antibiotics (Azithromycin, Clarithromycin, Erythromycin). For infants, Azithromycin is preferred. It stops the bacteria from replicating and spreading.
- Complication Mechanism: Severe coughing leads to high intrathoracic pressure, which can cause petechiae, subconjunctival hemorrhages, and even rib fractures. Apnea in infants is due to respiratory fatigue and possibly direct toxin effects on the brain.
Memory Tips
- Pertussis Priority Acronym: "S.T.O.P. the Spread"
S - Start Antibiotics (Azithromycin)
T - Transmission-based (Droplet) Precautions
O - Observe for Apnea (Continuous monitoring)
P - Prevent complications (Hydration, small feeds)
- Remember: For infants, think "Contagious and Critical" – treating the contagion (antibiotics) and monitoring the critical airway (apnea risk) are the twin pillars of care.
High-Frequency NCLEX Topics
NCLEX loves to test pertussis! Focus on:
1.
Recognizing the classic symptoms (paroxysmal cough with whoop) in a case study.
2.
Infant-specific risks (apnea is a bigger concern than the whoop itself).
3.
Infection control measures (Droplet Precautions, duration of isolation).
4.
Contraindicated interventions (chest physiotherapy).
5.
Vaccination prevention (DTaP vaccine schedule).
Watch Out for Question Variations!
- Symptom Identification: "The nurse hears a high-pitched inspiratory 'whoop' after a coughing fit in an infant. Which condition should the nurse suspect?"
- Safety/Precautions: "Which action should the nurse take first after admitting an infant with suspected pertussis?" (Answer: Place on Droplet Precautions).
- Patient Education: "The mother of a 2-month-old asks about the DTaP vaccine. Which statement by the nurse is correct?" (Answer: It protects against pertussis, which can be fatal in young infants).
- Priority Shift: If the question adds "The infant is currently cyanotic and apneic after a coughing spell," then the priority immediately shifts to airway management (option 3). Always read the full scenario!