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Chest Injuries | 마이메르시 MyMerci
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Chest Injuries

NCLEX Review Guide: Chest Injuries

Types of Chest Injuries

Pneumothorax

  • Spontaneous pneumothorax occurs when air enters the pleural space without trauma, commonly in tall, thin young males and patients with COPD.
  • Tension pneumothorax is a life-threatening condition where increasing pressure in the pleural space compresses the heart and great vessels, causing hemodynamic compromise.
  • Classic signs include sudden chest pain, dyspnea, diminished breath sounds on affected side, and hyperresonance to percussion.

Key Points

  • Tension pneumothorax requires immediate needle decompression followed by chest tube insertion
  • Never clamp chest tubes - this can cause tension pneumothorax
  • Position patient in high Fowler's position to facilitate breathing

Hemothorax

  • Hemothorax involves blood accumulation in the pleural space, often resulting from blunt or penetrating chest trauma.
  • Signs include decreased breath sounds, dullness to percussion on affected side, and signs of hypovolemic shock if blood loss is significant.
Critical: Monitor chest tube drainage - if >200mL/hour, notify physician immediately as this may indicate active bleeding requiring surgical intervention

Flail Chest

  • Flail chest occurs when three or more adjacent ribs are fractured in two places, creating a free-floating segment that moves paradoxically with respiration.
  • Paradoxical chest movement: affected segment moves inward during inspiration and outward during expiration.

Key Points

  • Primary concern is underlying pulmonary contusion, not the flail segment itself
  • Avoid external stabilization - position patient on affected side if tolerated
  • May require mechanical ventilation with PEEP

Assessment and Interventions

Primary Assessment

  1. Assess airway patency and breathing effectiveness
  2. Inspect chest for asymmetry, paradoxical movement, or penetrating objects
  3. Palpate for subcutaneous emphysema, tenderness, or crepitus
  4. Auscultate for diminished or absent breath sounds
  5. Percuss for hyperresonance (pneumothorax) or dullness (hemothorax)

Clinical Scenario

A 25-year-old male presents after MVA with sudden onset chest pain, dyspnea, and absent breath sounds on the right side. Trachea appears deviated to the left. This suggests tension pneumothorax requiring immediate needle decompression.

Chest Tube Management

  • Monitor for continuous bubbling in water seal chamber - indicates ongoing air leak that should decrease over time.
  • Fluctuation (tidaling) in water seal chamber indicates patent tube; absence may suggest obstruction or lung re-expansion.
  • Keep drainage system below chest level and maintain sterile technique when manipulating system.

Memory Aid: Chest Tube Troubleshooting

BUBBLE:
Bubbling continuous = air leak
Under water level = keep system
Below chest = position system
Blocked tube = check for kinks
Lung sounds = assess expansion
Emergency = never clamp tubes

Commonly Confused Concepts

Pneumothorax vs. Hemothorax vs. Flail Chest

ConditionBreath SoundsPercussionKey Finding
PneumothoraxDiminished/AbsentHyperresonantSudden chest pain
HemothoraxDiminished/AbsentDullSigns of blood loss
Flail ChestVariableVariableParadoxical movement

Common Pitfalls

  • Don't confuse simple pneumothorax with tension pneumothorax - tension is a medical emergency
  • Remember: hyperresonance = air (pneumothorax), dullness = fluid/blood (hemothorax)
  • Flail chest priority is underlying lung injury, not the chest wall instability

Study Tips and Quick Checks

NCLEX Memory Aid: CHEST Assessment

Check airway and breathing
Hyperresonance or dullness to percussion
Examine for paradoxical movement
Subcutaneous emphysema palpation
Tracheal deviation assessment

Priority Nursing Actions for Tension Pneumothorax:
1. Position upright
2. Administer high-flow oxygen
3. Prepare for immediate needle decompression
4. Never delay for chest X-ray if clinically obvious

Quick Self-Check

☐ Can I differentiate between simple and tension pneumothorax?
☐ Do I know the signs of each type of chest injury?
☐ Can I prioritize interventions for life-threatening conditions?
☐ Do I understand chest tube management principles?

Remember: You've got this! Focus on airway, breathing, and circulation priorities. Trust your assessment skills and knowledge of pathophysiology. Every question you practice brings you closer to passing the NCLEX and becoming the nurse you're meant to be!

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