Pneumonia, Atelectasis & Pleural Effusion — NCLEX Nursing Lesson Anatomy & Physiology · RN Track · Medical-Surgical Body Systems · Respiratory System · Pneumonia · Atelectasis · Pleural Effusion Condition Lesson · NCLEX-PN / NCLEX-RN

Three ways the lungs lose air space—filled with infection, collapsed, or squeezed by fluid—and the reasoning behind every antibiotic, incentive spirometer, and thoracentesis.

In this lesson

Lesson Objectives
Why This Matters
Disease Overview
Pathophysiology
Risk Factors
Signs & Symptoms
Nursing Assessment
Diagnostic Tests
Laboratory Tests
Medications
Nursing Interventions
Thoracentesis (procedure)
Complications
Patient Education
Clinical Judgment
Clinical Connections
NCLEX High-Yield
Memory Aids
Case Study
Practice Questions
Key Takeaways
References

Lesson Objectives

Differentiate pneumonia, atelectasis, and pleural effusion by cause and hallmark finding.
Explain how each reduces the lung's air space and impairs gas exchange—and why oxygenation is the priority.
Justify treatments—antibiotics, incentive spirometry/early mobility, and thoracentesis—and the reasoning behind each.
Provide safe nursing care before, during, and after a thoracentesis, and prevent post-operative atelectasis.
Apply the NCSBN Clinical Judgment model to prioritize oxygenation and answer NGN-style items.

Why This Matters

Prevalence: these are extremely common. Pneumonia is a leading cause of hospitalization and death, especially in older adults and the immunocompromised; atelectasis (collapsed alveoli) is one of the most common post-operative complications; and pleural effusion (fluid around the lung) complicates heart failure, infection, and cancer. You'll meet all three across med-surg, surgery, ICU, and the community.

Patient safety: all three reduce the surface area for gas exchange, causing hypoxia and, if severe, respiratory failure. Pneumonia can lead to sepsis; a large effusion can compress the lung; untreated atelectasis feeds pneumonia. Prevention (incentive spirometry, mobility, vaccines) is powerful nursing.

NCLEX importance: tested on oxygenation prioritization, pneumonia types and antibiotics, post-op atelectasis prevention (incentive spirometer, coughing/deep breathing, early ambulation), thoracentesis nursing care, positioning ("good lung down"), and recognizing deterioration. It builds on the A&P of alveolar gas exchange.

Why nurses encounter them constantly: pneumonia is everywhere and reportable; atelectasis is a daily post-op concern; and effusions are common in chronic disease—so assessment, prevention, and procedure support are everyday skills.

Connecting to prior lessons From A&P, recall that gas exchange happens at the alveoli—so anything that fills them (pneumonia), collapses them (atelectasis), or squeezes the lung from outside (pleural effusion) reduces oxygenation. From assessment, recall lung-sound patterns and that SpO₂, respiratory rate, and work of breathing are the vital cues.

Disease Overview

Disorder	What it is (one line)	Core problem
Pneumonia	Infection/inflammation that fills the alveoli with fluid/pus	Consolidated, fluid-filled air sacs → poor gas exchange, hypoxia, sepsis risk
Atelectasis	Collapse of alveoli (often post-op, from shallow breathing/mucus plugging)	Alveoli deflate → less surface for gas exchange → hypoxia, pneumonia risk
Pleural effusion	Fluid in the pleural space (around the lung) that compresses it	Fluid squeezes the lung → decreased expansion, dyspnea, diminished sounds

Pneumonia is often classified as community-acquired (CAP) vs. hospital-acquired (HAP)/ventilator-associated (VAP), and aspiration pneumonia (from inhaling food/fluids). These distinctions guide antibiotic choice and prevention.

Analogy — three ways to lose a room's air

Picture each alveolus as a tiny room that should be full of fresh air. Pneumonia floods the room (fills the air sacs with fluid/pus). Atelectasis collapses the room (the walls fall in—no air inside). Pleural effusion piles water outside the room and crushes it from the outside. In all three, the "room" can't do its job of exchanging oxygen—so the patient gets short of breath and hypoxic.

Pathophysiology

Normal physiology: open, air-filled alveoli exchange oxygen and CO₂ across a thin membrane; surfactant keeps them open, and the pleural space has only a trace of lubricating fluid. ↓ Pneumonia: a pathogen (bacteria, virus, fungi) or aspirated material infects the lung → inflammation and exudate fill the alveoli (consolidation) → gas can't cross fluid-filled sacs → hypoxia, productive cough, fever, crackles → can progress to sepsis/respiratory failure. ↓ Atelectasis: shallow breathing (post-op pain/sedation), immobility, or a mucus plug → alveoli aren't inflated and collapse → reduced surface area and shunting → hypoxia, diminished breath sounds → collapsed, moist alveoli become a breeding ground for pneumonia. ↓ Pleural effusion: fluid accumulates in the pleural space (from heart failure = transudate, or infection/cancer/inflammation = exudate) → the fluid compresses the lung → decreased expansion, dyspnea, diminished breath sounds and dullness to percussion over the fluid → a large effusion can severely limit breathing. ↓ How it progresses: all reduce oxygenation → worsening hypoxia, respiratory failure, and (pneumonia) sepsis if untreated. Early recognition, oxygen, antibiotics, lung re-expansion (spirometry/mobility), and drainage (thoracentesis) reverse the course. NCLEX Clinical Pearl — the lung-sound clue Pneumonia → crackles (rales) and possibly bronchial breath sounds over consolidation. Atelectasis → diminished or absent breath sounds over the collapsed area. Pleural effusion → diminished/absent breath sounds and dullness to percussion over the fluid. Matching the sound to the problem is a favorite test skill.

Risk Factors

Non-modifiable	Modifiable	Preventable / reducible
Age extremes (very young, older adults) Chronic lung/heart disease, cancer Immunosuppression Neuromuscular/swallowing disorders (aspiration)	Smoking Immobility/prolonged bed rest (atelectasis) Inadequate pain control post-op (shallow breathing) Malnutrition	Vaccination (pneumococcal, flu, COVID) Incentive spirometry, coughing/deep breathing, early mobility (atelectasis) Aspiration precautions (upright, swallow screen) Smoking cessation, oral care

High-risk populations: older adults, post-operative and immobile patients (atelectasis, pneumonia), those with dysphagia/decreased LOC (aspiration pneumonia), the immunocompromised, smokers, and patients with heart failure, cancer, or infection (pleural effusion).

Signs & Symptoms

Disorder	Hallmark findings & WHY
Pneumonia	Fever, chills, productive cough (purulent/rust-colored sputum), pleuritic chest pain, dyspnea, tachypnea, crackles, and hypoxia. Consolidated alveoli impair gas exchange; older adults may present atypically with confusion and few classic signs.
Atelectasis	Dyspnea, tachypnea, decreased/absent breath sounds over the area, low SpO₂, and (post-op) a low-grade fever in the first 24–48 hours. Collapsed alveoli reduce oxygenation.
Pleural effusion	Dyspnea, decreased chest expansion on the affected side, diminished/absent breath sounds, dullness to percussion, and pleuritic pain. Fluid compresses the lung. A large effusion causes significant respiratory distress.
Expected (all)	Some dyspnea, cough, and reduced SpO₂; fever in infection.
Unexpected (older adults)	Confusion, weakness, or a fall may be the only sign of pneumonia in older adults—don't wait for classic symptoms.
Emergency findings	Severe dyspnea, SpO₂/hypoxia dropping, cyanosis, confusion, signs of sepsis (fever/hypotension/tachycardia), or respiratory failure. A tension effect from a very large effusion is an emergency.

Why older adults are tricky In older adults, pneumonia may show up as new confusion, weakness, decreased appetite, or a fall—not the textbook fever and cough. A change in mental status in an older patient can be your only early cue of a serious infection—assess carefully and check oxygenation.

Nursing Assessment

Subjective: onset of cough/dyspnea/fever, sputum color/amount, chest pain (pleuritic?), recent surgery/immobility, aspiration risk (swallowing, decreased LOC), and heart/cancer history (effusion).

Objective: vital signs with SpO₂, respiratory rate/effort, lung sounds (crackles, diminished/absent), percussion (dullness over fluid/consolidation), chest expansion symmetry, cough/sputum, temperature, and mental status.

Priority / focused finding	Why it matters / action
Oxygenation (SpO₂, RR, work of breathing)	The top priority—worsening signals hypoxia/respiratory failure; give oxygen and escalate.
Lung sounds & expansion	Crackles (pneumonia), diminished/absent sounds (atelectasis/effusion), dullness (effusion)—localize the problem.
Mental status (esp. older adults)	New confusion may be the first sign of pneumonia/sepsis—escalate.
Sputum/cough & fever	Guide infection assessment and cultures.
Aspiration risk	Impaired swallow/LOC → keep NPO/upright, prevent aspiration pneumonia.

When to notify / act now Severe dyspnea, SpO₂ dropping/hypoxia, cyanosis, confusion (esp. older adults), signs of sepsis, absent breath sounds with a large effusion, or respiratory failure. These are emergencies.

Diagnostic Tests

Test	Purpose / why ordered	Findings & nursing considerations
Chest X-ray/CT	Identify consolidation (pneumonia), collapse (atelectasis), or fluid (effusion)	Infiltrates (pneumonia), volume loss (atelectasis), fluid/blunted costophrenic angle (effusion). The key imaging test.
Sputum culture & Gram stain	Identify the pneumonia organism to target antibiotics	Collect before starting antibiotics when possible; teach a deep cough for a good specimen.
Pulse oximetry / ABG	Assess oxygenation and acid-base	Hypoxemia; a rising CO₂ with a falling pH = respiratory failure. Trend it.
Thoracentesis (effusion)	Drain and analyze pleural fluid (diagnostic and therapeutic)	See the procedure section. Sends fluid for culture/cytology; relieves dyspnea by removing fluid.
Blood cultures	Detect bacteremia/sepsis in pneumonia	Draw before antibiotics when feasible—don't delay antibiotics for severe infection.

Laboratory Tests

Test	Normal / expected	Significance
CBC with differential	WBC 5–10k	Elevated WBC suggests bacterial infection (pneumonia); a very low WBC in severe sepsis is ominous. Trend it.
ABG / SpO₂	PaO₂ 80–100; SpO₂ ≥95%	Hypoxemia across all three; rising CO₂/falling pH = respiratory failure—priority.
Blood/sputum cultures	Negative	Positive identifies the organism and guides/de-escalates antibiotics.
Pleural fluid analysis	—	Distinguishes transudate (heart failure) from exudate (infection/cancer); guides treatment.
Procalcitonin / lactate (sepsis)	Per lab	Elevated markers/lactate signal bacterial infection/sepsis severity.

Trend interpretation The key trend is oxygenation (SpO₂/ABG)—falling values with rising work of breathing mean deterioration. In pneumonia, a rising WBC/lactate with fever and hypotension signals worsening infection/sepsis. Pleural fluid results (transudate vs. exudate) point to the underlying cause.

Medications

Antibiotics — pneumonia

Why given: treat the causative bacteria—start promptly (delays increase mortality), ideally after cultures. Choice depends on the type: community-acquired (CAP) often uses a macrolide (azithromycin), doxycycline, or a respiratory fluoroquinolone/beta-lactam combination; hospital-acquired (HAP/VAP) needs broader coverage for resistant organisms. Viral pneumonia is supportive ± antivirals; antifungals for fungal causes. Nursing/teaching: give on time, monitor response and for allergic reactions, and complete the full course.

Supportive / symptom medications

Purpose	Agent & why
Fever/pain	Antipyretics/analgesics (acetaminophen); adequate pain control post-op so patients breathe deeply (prevents atelectasis).
Bronchospasm/secretions	Bronchodilators (albuterol) if wheezing; expectorants/mucolytics and hydration to loosen secretions.
Oxygen	Supplemental O₂ to correct hypoxemia—titrate to target.
Underlying cause (effusion)	Diuretics for heart-failure–related effusion; treat infection/cancer as indicated.

NCLEX testing points Pneumonia: start antibiotics promptly (after cultures), complete the course; know CAP vs. HAP. Prevent atelectasis with incentive spirometry, coughing/deep breathing, early ambulation, and pain control. Pleural effusion: thoracentesis drains fluid and relieves dyspnea. Oxygenation is the priority across all three.

Nursing Interventions

Priority	Intervention & WHY
Airway	Clear secretions—encourage effective coughing, suction if needed, and hydrate to thin mucus—open airways support oxygenation.
Breathing/oxygenation	Position upright/high Fowler's, apply oxygen to target SpO₂, and use incentive spirometry and deep breathing to re-expand alveoli. Positioning "good lung down" can improve oxygenation with unilateral lung disease (perfusion favors the healthy lung).
Prevent/treat atelectasis	Incentive spirometer, cough & deep breathe, and early ambulation—the single most effective way to prevent post-op alveolar collapse; ensure adequate pain control so the patient breathes deeply.
Circulation/sepsis	Monitor for sepsis (fever, hypotension, tachycardia, confusion); fluids and prompt antibiotics; monitor perfusion.
Aspiration prevention	Keep the patient upright to eat, assess swallow, and keep NPO if unsafe—prevents aspiration pneumonia.
Comfort & hydration/nutrition	Pain/fever control, rest, fluids (thin secretions), and nutrition to support recovery.
Procedure support (effusion)	Prepare/support the patient for thoracentesis and monitor after (see below).
Education	Vaccination, smoking cessation, spirometry technique, aspiration precautions, and warning signs.
Interdisciplinary	Respiratory therapy, pulmonology, infectious disease, physical therapy (mobility), speech (swallow), and dietitian.

Why incentive spirometry + mobility prevent so much harm Deep breaths and moving around re-inflate collapsing alveoli and mobilize secretions. Preventing atelectasis directly prevents the pneumonia that so often follows it. That's why "cough, deep breathe, use your incentive spirometer, and get up and walk" is powerful, physiology-based nursing—not just routine.

Thoracentesis — Nursing Care

A thoracentesis drains fluid from the pleural space to relieve dyspnea and analyze the fluid. Nursing care wraps around the procedure:

Before: confirm consent, gather supplies, check coagulation status, and explain the procedure. Position the patient sitting upright, leaning forward over a bedside table (arms/head supported)—this spreads the ribs and lets fluid pool at the base for safe access. ↓ During: the patient must hold still and avoid coughing/deep breathing while the needle is inserted (to avoid puncturing the lung). Support and coach them; monitor vitals and SpO₂. ↓ After: apply a dressing, position on the unaffected side as ordered, monitor vitals/SpO₂, and obtain a post-procedure chest x-ray to check for pneumothorax. Send fluid for analysis. ↓ Watch for complications: pneumothorax (sudden sharp chest pain, dyspnea, diminished breath sounds, low SpO₂), bleeding, or re-expansion pulmonary edema—notify the provider immediately. Why "don't cough during the needle" matters Coughing or a deep breath moves the lung toward the needle and can cause a pneumothorax. Coaching the patient to stay still and breathe normally during insertion—and getting a post-procedure chest x-ray—protects the lung. Removing too much fluid too fast can cause re-expansion pulmonary edema, so drainage is limited.

Potential Complications

Complication	Early signs	Nursing / emergency response
Sepsis / septic shock (pneumonia)	Fever/hypothermia, tachycardia, hypotension, confusion, rising lactate	Emergency: rapid cultures, antibiotics, fluids, oxygen; escalate/ICU.
Respiratory failure (all)	Worsening hypoxia, rising CO₂/falling pH, cyanosis, confusion	Emergency: oxygen/ventilatory support, ICU.
Atelectasis → pneumonia	Post-op dyspnea, diminished sounds, low SpO₂, low-grade fever	Incentive spirometry, mobility, deep breathing, oxygen; treat if pneumonia develops.
Pneumothorax (post-thoracentesis)	Sudden sharp chest pain, dyspnea, absent breath sounds one side	Emergency: notify provider, oxygen, prepare for chest tube.
Empyema (infected effusion)	Persistent fever, purulent pleural fluid	Drainage (chest tube), antibiotics.
Pleural effusion recurrence	Returning dyspnea, diminished sounds	Treat underlying cause; repeat drainage as needed.

Patient Education

Disease process: explain the specific problem (infection, collapse, or fluid) and its treatment. Prevention/lifestyle: get vaccinated (pneumococcal, flu, COVID), stop smoking, practice good oral care, and stay active. Post-op/atelectasis prevention: use the incentive spirometer, cough and deep breathe every 1–2 hours, and ambulate early—and take pain medication so you can breathe deeply. Medication adherence: complete the full antibiotic course even when feeling better; take antipyretics/analgesics as directed. Home care: rest, hydrate (thins secretions), aspiration precautions (upright to eat) if at risk, and monitor for worsening. Follow-up: keep appointments and repeat imaging as advised; treat the underlying cause of effusions. Warning signs / when to seek emergency care: worsening shortness of breath, high or persistent fever, chest pain, coughing blood, confusion, or low oxygen readings—seek care.

Clinical Judgment (NCSBN Model)

Recognize cues: a 78-year-old, 2 days after abdominal surgery, is increasingly short of breath with a low-grade fever, diminished breath sounds at the lung bases, an SpO₂ of 89%, and is taking shallow breaths because "it hurts to breathe deeply." She has not used her incentive spirometer.
Analyze cues: post-op + shallow breathing (pain) + diminished basal sounds + hypoxia + low-grade fever = atelectasis (collapsed alveoli), which can progress to pneumonia. Oxygenation is the concern.
Prioritize hypotheses: post-operative atelectasis with impaired oxygenation—re-expanding the lungs and improving oxygenation are the priorities.
Generate solutions: position upright, apply oxygen, provide pain control so she can breathe deeply, coach incentive spirometry and cough/deep breathing, and ambulate her; monitor SpO₂ and lung sounds; notify the provider if she doesn't improve.
Take action: medicate for pain, sit her up, start oxygen, coach spirometry and deep breathing, and get her moving.
Evaluate outcomes: did SpO₂ rise, breath sounds improve, and dyspnea ease? If not, escalate and evaluate for pneumonia.

Clinical Connections — commonly confused conditions

	Pneumonia	Atelectasis	Pleural effusion
Cause	Infection fills alveoli with fluid/pus	Alveoli collapse (post-op, mucus plug, immobility)	Fluid in the pleural space compresses the lung
Lung sounds	Crackles, bronchial sounds over consolidation	Diminished/absent over the area	Diminished/absent + dullness to percussion
Fever	Common (infection)	Low-grade (early post-op)	Depends on cause
Diagnostics	CXR (infiltrate), sputum/blood cultures	CXR (volume loss), low SpO₂	CXR (fluid), thoracentesis
Treatment	Antibiotics, O₂, supportive	Incentive spirometry, mobility, deep breathing	Thoracentesis/chest tube, treat cause
Priority nursing	Oxygenation, antibiotics, watch for sepsis	Lung re-expansion, oxygenation	Oxygenation, procedure support

Key discriminators: crackles + fever + productive cough = pneumonia; diminished sounds after surgery = atelectasis; diminished sounds with dullness to percussion = pleural effusion. Also distinguish these from obstructive disease (wheezing, trouble exhaling).

NCLEX High-Yield Review

What the NCLEX Wants You to Know

Incentive spirometry + mobility prevent atelectasis Cough/deep breathe; control pain so patients breathe deeply.
Pneumonia: prompt antibiotics, finish the course Cultures first when possible; know CAP vs. HAP.
Thoracentesis: sit upright, don't cough during; post-procedure CXR Watch for pneumothorax.
"Good lung down" Improves oxygenation in unilateral lung disease.
Older adults: confusion may be the only sign of pneumonia

Common distractors: withholding pain meds post-op (leads to shallow breathing/atelectasis), delaying antibiotics for pneumonia, having a patient cough during thoracentesis needle insertion, forgetting the post-thoracentesis chest x-ray, and expecting classic symptoms in older adults. Priority interventions: oxygenation, lung re-expansion (spirometry/mobility), antibiotics, procedure support, and aspiration prevention. Expected vs unexpected: crackles/diminished sounds and mild hypoxia are expected patterns; severe hypoxia, sepsis, respiratory failure, or post-thoracentesis pneumothorax are emergencies. Patient teaching: vaccines, spirometry, complete antibiotics, aspiration precautions, warning signs. Safety: oxygenation, aspiration, thoracentesis positioning, sepsis recognition. Delegation: RN assesses respiratory status and teaches; UAP can take vitals (SpO₂), assist with positioning/ambulation, remind/coach incentive spirometry after teaching, and report changes. Frequently tested meds: antibiotics (CAP/HAP), antipyretics/analgesics, bronchodilators, oxygen. Critical values: SpO₂/ABG, WBC/lactate. Most common mistakes: inadequate post-op pain control, delayed antibiotics, and missing atypical pneumonia in older adults.

Memory Aids

Three problems, three sounds: Pneumonia = Crackles; Atelectasis = Diminished/absent; Effusion = Diminished + Dull to percussion.
Atelectasis prevention = "TCDB + IS + walk" — Turn, Cough, Deep Breathe, Incentive Spirometer, and ambulate.
Older adult pneumonia = "Confusion is the cough" — new confusion may be the only sign.
Thoracentesis "Sit up, lean forward, hold still, x-ray after."
"Good lung down" — position the healthy lung down to improve oxygenation (unilateral disease).
Pneumonia antibiotics = "Culture, then cover, then complete."
Post-op fever timeline "Wind (atelectasis) → Water (UTI) → Wound → Walking (DVT) → Wonder drugs" — atelectasis is the classic early (first 24–48 h) post-op fever.

Case Study — from admission to discharge

Admission. Mrs. Nguyen, 74, comes to the ED with 3 days of fever, productive cough with rust-colored sputum, pleuritic chest pain, and increasing shortness of breath. She is confused (new for her, per family). Temp 101.8°F, RR 28, HR 110, BP 96/58, SpO₂ 87% on room air. Crackles are heard in the right lower lobe; the chest x-ray shows a right-lower-lobe infiltrate.

Step 1–2: Recognize & analyze cues

Cues: fever + productive rust-colored sputum + crackles + infiltrate = pneumonia. Add hypoxia (SpO₂ 87%), tachypnea, tachycardia, hypotension, and new confusion = developing sepsis in an older adult. Oxygenation and sepsis are the priorities.

Step 3–4: Prioritize & plan

Priority: airway/oxygenation and treating infection/sepsis. Plan: apply oxygen (target SpO₂), obtain blood and sputum cultures, start antibiotics promptly, give IV fluids for hypotension, monitor closely, and reassess mental status and perfusion.

Step 5: Take action

The nurse sits her upright, applies oxygen (SpO₂ rises to 93%), draws cultures and lactate, administers ordered antibiotics without delay and IV fluids, and monitors vitals/LOC. Antipyretics for fever; encourages fluids and rest.

Step 6: Evaluate & discharge

She improves—afebrile, SpO₂ 94%, clearer sensorium. Discharge teaching: complete the full antibiotic course, get the pneumococcal and flu vaccines, rest and hydrate, use good oral care, and return for worsening dyspnea, high fever, chest pain, or confusion. Follow-up imaging as advised.

NCLEX Practice Questions

Answer choices are numbered; the correct answer is given as a number.

1. Which nursing intervention is most effective in preventing post-operative atelectasis?

Restricting fluids
Keeping the client flat and still
Incentive spirometry with coughing, deep breathing, and early ambulation
Administering antibiotics prophylactically

Rationale

Answer: 3. Incentive spirometry, coughing/deep breathing, and early ambulation re-expand alveoli and mobilize secretions—the best prevention. Fluid restriction (1) thickens secretions, flat/still positioning (2) promotes collapse, and antibiotics (4) don't prevent atelectasis.

2. A nurse is caring for an older adult admitted with pneumonia. Which finding may be the earliest sign of infection in this population?

New-onset confusion
A productive cough
Bradycardia
Weight gain

Rationale

Answer: 1. Older adults often present atypically—new confusion, weakness, or a fall may be the only early sign of pneumonia. A classic cough (2) may be absent; bradycardia (3) and weight gain (4) are not typical early pneumonia signs.

3. A client is scheduled for a thoracentesis. Which position should the nurse help the client assume for the procedure?

Sitting upright, leaning forward over a bedside table with arms supported
Flat supine
Left lateral (side-lying) with knees to chest
Trendelenburg

Rationale

Answer: 1. Sitting upright and leaning forward over a table spreads the ribs and lets fluid pool at the base for safe needle access. Flat (2), knees-to-chest (3), and Trendelenburg (4) are inappropriate.

4. During thoracentesis needle insertion, the nurse should instruct the client to:

Cough forcefully to bring up fluid
Take rapid deep breaths
Talk continuously
Hold still and avoid coughing or deep breathing

Rationale

Answer: 4. The client must remain still and avoid coughing/deep breathing during insertion to prevent the lung from moving into the needle (pneumothorax). The other actions increase risk.

5. A nurse auscultates a client's lungs and hears diminished breath sounds with dullness to percussion over the right lower lung. These findings are most consistent with:

Asthma
Pleural effusion
A normal lung
Pneumothorax

Rationale

Answer: 2. Diminished/absent breath sounds with dullness to percussion indicate fluid in the pleural space (pleural effusion). Asthma (1) causes wheezing, a pneumothorax (4) causes hyperresonance with absent sounds, and a normal lung (3) has clear sounds with resonance.

6. SATA. Which findings indicate a possible complication after a thoracentesis? Select all that apply.

Sudden sharp chest pain
New dyspnea and dropping SpO₂
Mild soreness at the puncture site
Absent breath sounds on the procedure side
A normal post-procedure chest x-ray

Rationale

Answers: 1, 2, 4. Sudden chest pain, new dyspnea/hypoxia, and absent breath sounds suggest a pneumothorax—notify the provider. Mild puncture-site soreness (3) and a normal x-ray (4/5) are expected/reassuring.

7. SATA. Which teaching points are appropriate for a client recovering from pneumonia? Select all that apply.

Complete the entire course of antibiotics
Get the pneumococcal and influenza vaccines
Stop antibiotics once the fever resolves
Increase fluid intake to thin secretions
Report worsening shortness of breath or confusion

Rationale

Answers: 1, 2, 4, 5. Completing antibiotics, vaccination, hydration, and reporting warning signs support recovery and prevention. Stopping antibiotics early (3) risks relapse and resistance.

8. Priority. A nurse is caring for four clients. Who should be assessed first?

A client with pneumonia awaiting discharge teaching
A post-op client due for incentive spirometry coaching
A client 1 hour post-thoracentesis with sudden chest pain, dyspnea, and an SpO₂ of 86%
A client with a resolving cough requesting fluids

Rationale

Answer: 3. Sudden chest pain, dyspnea, and hypoxia after thoracentesis suggest a pneumothorax—an airway/oxygenation emergency. The others are stable or routine.

9. Delegation. Which task can the RN appropriately delegate to unlicensed assistive personnel (UAP) for a stable post-op client at risk for atelectasis?

Assessing lung sounds
Reminding and coaching the client to use the incentive spirometer and ambulate per the plan, and reporting how they tolerate it
Teaching the purpose of incentive spirometry
Interpreting the SpO₂ trend

Rationale

Answer: 2. Reminding/coaching a taught task and assisting with ambulation are within UAP scope and support prevention. Assessment (1), teaching (3), and interpreting trends (4) require the licensed nurse.

10. NGN Case Study. A 68-year-old with heart failure reports several days of worsening shortness of breath. On exam: decreased chest expansion and diminished breath sounds with dullness to percussion at the right base, RR 26, SpO₂ 89%. A chest x-ray shows a large right pleural effusion. A thoracentesis is planned.

a) What is the priority problem and which cues support it?
b) What are the priority nursing actions before, during, and after the procedure?

Model answer

a) Priority problem: impaired oxygenation/ventilation from a large pleural effusion compressing the lung. Supporting cues: dyspnea, diminished sounds + dullness to percussion, decreased expansion, SpO₂ 89%, and a large effusion on x-ray (likely from heart failure—a transudate).

b) Priority actions: Before—apply oxygen, position sitting upright leaning forward over a table, confirm consent and coagulation status, and explain the need to hold still. During—coach the client to hold still and avoid coughing/deep breathing, and monitor vitals/SpO₂. After—apply a dressing, position on the unaffected side as ordered, monitor for pneumothorax (sudden chest pain, dyspnea, absent breath sounds, low SpO₂), and obtain a post-procedure chest x-ray; treat the underlying heart failure (e.g., diuretics). Evaluate that dyspnea and oxygenation improve without complications.

Key Takeaways

Three ways the lung loses air space: pneumonia fills the alveoli, atelectasis collapses them, and pleural effusion compresses the lung—all impair oxygenation.
Match the sound: crackles = pneumonia; diminished/absent = atelectasis; diminished + dull to percussion = pleural effusion.
Prevent atelectasis with incentive spirometry, coughing/deep breathing, and early ambulation—and adequate pain control so patients breathe deeply.
Pneumonia: cultures first, then prompt antibiotics, complete the course; watch for sepsis; in older adults, confusion may be the only sign.
Pleural effusion: thoracentesis—sit upright leaning forward, hold still (no coughing) during insertion, and get a post-procedure chest x-ray to rule out pneumothorax.
Position "good lung down" to improve oxygenation in unilateral lung disease.
Prevention/teaching: vaccinate, stop smoking, aspiration precautions, and use the incentive spirometer.

References

Hinkle, J. L., Cheever, K. H., & Overbaugh, K. J. (2022). Brunner & Suddarth's textbook of medical-surgical nursing (15th ed.). Wolters Kluwer/Lippincott.
Ignatavicius, D. D., Workman, M. L., Rebar, C. R., & Heimgartner, N. M. (2021). Medical-surgical nursing: Concepts for interprofessional collaborative care (10th ed.). Elsevier.
Silvestri, L. A., & Silvestri, A. E. (2023). Saunders comprehensive review for the NCLEX-RN examination (9th ed.). Elsevier.
Assessment Technologies Institute. (2023). ATI RN adult medical-surgical nursing review module (12th ed.). ATI Nursing Education.
Metlay, J. P., Waterer, G. W., Long, A. C., Anzueto, A., Brozek, J., Crothers, K., … Whitney, C. G. (2019). Diagnosis and treatment of adults with community-acquired pneumonia. American Journal of Respiratory and Critical Care Medicine, 200(7), e45–e67. https://doi.org/10.1164/rccm.201908-1581ST
National Heart, Lung, and Blood Institute. (2023). Pneumonia, atelectasis, and pleural disorders. National Institutes of Health. https://www.nhlbi.nih.gov
Centers for Disease Control and Prevention. (2024). Pneumonia and vaccination. U.S. Department of Health and Human Services. https://www.cdc.gov/pneumonia

Restrictive & Infectious Lung Disorders

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Medical-Surgical Body Systems

Neurological System

Sensory System

Endocrine System

Respiratory System

Cardiovascular System

Hematologic/Immune/Lymphatic System

Gastrointestinal (GI) System

Renal & Genitourinary

Reproductive System

Musculoskeletal System

Integumentary System

Specialty Areas

Maternity

Infectious Diseases

Pediatrics

Mental Health

NCLEX Success Center

Clinical Judgment Practice

Prioritization Practice

Delegation Practice

Lab Values

Final Review