A 15-year-old adolescent with cystic fibrosis is admitted to… | 마이메르시 MyMerci
Child Health
문제

A 15-year-old adolescent with cystic fibrosis is admitted to the pediatric unit with increased respiratory distress and thick, tenacious secretions. The child's oxygen saturation is 85% on room air, and auscultation reveals coarse crackles throughout both lung fields. Which nursing intervention should be the highest priority?

해설
Chest physiotherapy and postural drainage are the highest priority to directly mobilize and clear thick secretions in cystic fibrosis, addressing the underlying cause of respiratory distress. Other interventions are supportive but secondary to airway clearance.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question tests the application of the ABC (Airway, Breathing, Circulation) priority framework in the context of a specific chronic illness. The patient has Cystic Fibrosis (CF), a genetic disorder causing thick, sticky mucus production. The primary problem here is Key Point! ineffective airway clearance due to thick secretions, leading to hypoxemia (SpO2 85%) and respiratory distress. While all options are appropriate CF interventions, the priority is determined by which action most directly and immediately addresses the life-threatening problem: the obstructed airway.

Answer Rationale: Key Point! The correct answer is Perform chest physiotherapy and postural drainage immediately. In CF, the pathophysiological cornerstone is defective chloride transport, leading to dehydrated, viscous secretions that obstruct airways and cause atelectasis and infection. The scenario describes the direct consequences: distress and hypoxemia. Chest physiotherapy (CPT) and postural drainage are active, direct interventions to mobilize and clear these secretions, thereby opening the airway, improving ventilation, and ultimately addressing the root cause of the low oxygen saturation. Clearing the airway is the first and most critical step.

Distractor Analysis:
1. Watch out for confusion! Administering oxygen (option 1) treats the symptom (hypoxemia) but not the cause (airway obstruction). In a patient with chronic CO2 retention (common in advanced CF), high-flow oxygen can suppress the hypoxic drive to breathe. While oxygen may be needed, securing a patent airway comes first.
3. Encouraging fluids (option 3) is a long-term, supportive measure to help thin secretions systemically. It is not an immediate intervention for acute distress and does not clear existing, tenacious plugs.
4. Positioning in high Fowler's (option 4) aids lung expansion and ease of breathing but is a passive, comfort measure. It does not actively clear the obstructing secretions causing the crisis.

Related Concepts: The NCLEX frequently tests prioritizing airway interventions over circulatory or comfort measures. For CF, remember the core management triad: Airway Clearance, Infection Control, and Nutritional Support. Always link the thick secretions to the risk of infection (e.g., Pseudomonas aeruginosa) and the need for pancreatic enzyme supplements due to malabsorption.
Concept Summary
ConceptKey Takeaway
Cystic Fibrosis PathophysiologyDefect in CFTR protein → Thick mucus in lungs (obstruction, infection) and pancreas (malabsorption).
Priority Setting (ABCs)Airway (clear it) always comes before Breathing (support it with O2) and Circulation.
Chest Physiotherapy (CPT)First-line, direct intervention to mobilize secretions in CF, bronchiectasis.
Nursing Assessment in CFMonitor for: Increased work of breathing, hypoxemia, characteristic cough (productive), nutritional status.

Side-by-Side Comparison!
Intervention for CF ExacerbationPurpose & PriorityWhen to Use
Chest Physiotherapy & Postural DrainageDirect airway clearance (HIGHEST PRIORITY). Removes the obstruction causing distress.Acute distress with thick secretions; scheduled daily management.
Supplemental OxygenSupports oxygenation (SYMPTOM management). Caution with chronic CO2 retainers.After or with airway clearance, for documented hypoxemia.
Increased Fluid IntakeSystemic hydration to prevent thick secretions (supportive/long-term).Ongoing daily care, not an acute crisis intervention.

Anatomy, Physiology & Pharmacology Points • Physiology: CFTR channel dysfunction leads to increased sodium reabsorption and decreased chloride secretion on epithelial surfaces. This draws water into cells, leaving mucus dehydrated and sticky. • Pharmacology: Common CF medications include Dornase alfa (Pulmozyme) (a mucolytic that breaks down DNA in thick sputum), inhaled antibiotics (e.g., tobramycin) for Pseudomonas, and pancreatic enzymes (e.g., pancrelipase) with meals.
Memory Tips • ABCs for CF: Airway Clearance first, then Breathing support (O2), then Circulation/Comfort/other care. • CF Mucus: Think "Thick like Glue" – you need physical therapy (CPT) to "loosen the glue," not just water or oxygen.
High-Frequency NCLEX Topics This integrates pediatric chronic illness management with priority setting. The NCLEX loves to present a patient in distress and ask for the "first," "priority," or "most important" action. The key is to identify the underlying, life-threatening problem (airway obstruction) and choose the intervention that directly fixes it.
Watch Out for Question Variations! • Instead of asking for the priority intervention, the question might ask: "Which finding indicates the therapy is effective?" (Answer: Improved breath sounds, increased SpO2, productive cough). • The scenario could shift to a post-operative patient with thick secretions – the priority (airway clearance via coughing/deep breathing/CPT) remains the same. • It might combine CF with a nutritional deficiency (e.g., fat-soluble vitamins A, D, E, K) and ask for a related nursing diagnosis or intervention.

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on a pediatric pulmonary unit. Your patient, a teenager with CF named Jamie, is anxious, leaning forward, using accessory muscles to breathe. Their cough is weak and non-productive despite feeling "full." SpO2 is 85%, and you hear coarse crackles everywhere.

Nursing Intervention Strategy: 1. Immediate Action (Priority): Explain the need for CPT to Jamie to reduce anxiety and gain cooperation. Perform chest physiotherapy (percussion and vibration) combined with postural drainage positions to target different lung lobes. Have suction equipment ready at the bedside. 2. Concurrent/Follow-up Actions: • After CPT: Encourage deep coughing or use huffing techniques to expectorate loosened secretions. Then apply supplemental oxygen via nasal cannula as ordered, titrating to maintain SpO2 > 92%. • Assessment: Reassess breath sounds, work of breathing, SpO2, and sputum characteristics (color, amount) after CPT. • Supportive Care: Position in High Fowler's for comfort and lung expansion. Encourage warm fluids (if not contraindicated) to aid in thinning secretions. • Medication Administration: Administer prescribed bronchodilators (before CPT) and mucolytics (like dornase alfa).

Patient Safety and Precautions: • Oxygen Caution: In patients with known or suspected chronic hypercapnia (elevated CO2), use low-flow oxygen (e.g., 1-2 L/min) and monitor for decreased respiratory rate/lethargy, which may indicate CO2 narcosis. • CPT Contraindications: Do not perform over areas of bleeding, fracture, or recent surgery. Avoid immediately after meals to prevent vomiting/aspiration. • Infection Control: CF patients often harbor multi-drug resistant bacteria. Practice strict contact precautions as per protocol. CPT equipment should be for individual patient use.
Nursing Procedure & Medication Flow CPT & Postural Drainage Procedure: 1. Administer bronchodilator (if ordered) 15-30 minutes prior. 2. Position patient to drain specific lung segments (e.g., Trendelenburg for lower lobes). 3. Perform manual percussion (cupped hands) or vibration over the rib cage for 3-5 minutes per area. 4. Encourage deep breathing and controlled coughing/huffing after each position. 5. Collect and document sputum.
Medication Point: Pancreatic enzymes (e.g., Creon) must be given with every meal and snack, not on an empty stomach. Do not crush enteric-coated beads.
A Word from Your Senior Nurse "In the hustle of clinicals and studying, it's easy to see 'low oxygen' and jump to 'give oxygen.' But true nursing judgment is asking *why* the oxygen is low. For this CF patient, the 'why' is a physical plug of mucus. Your hands (doing CPT) are the primary tool to fix that, more immediate than any oxygen tank. Always treat the cause, not just the number on the monitor. This critical thinking is what separates a task-completer from a life-saving nurse and is exactly what the NCLEX is testing."

핵심 개념

  • Cystic Fibrosis — A genetic disorder affecting the CFTR protein, leading to production of thick, sticky mucus that obstructs airways (causing infections) and pancreatic ducts (causing malabsorption).
  • Chest Physiotherapy — A set of techniques including percussion, vibration, and postural drainage used to mobilize and clear pulmonary secretions from the airways.
  • Postural Drainage — Positioning a patient so that gravity assists in draining secretions from specific segments of the lungs into the larger airways where they can be coughed out.
  • Hypoxemia — A low level of oxygen in the blood, typically defined as an arterial oxygen pressure (PaO2) less than 80 mmHg or a pulse oximetry reading (SpO2) less than 95%.
  • ABC Priority Framework — A fundamental nursing and emergency care principle: Address life-threatening issues in order of Airway, then Breathing, then Circulation.

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