A trauma client is admitted to the emergency room following a motor accident. Examination reveals that the left side of the chest moves inward when the client takes a breath. The finding suggestive of?

1. A

   Pneumothorax

2. B

   Mediastinal shift

3. C

   Pulmonary congestion

4. D

   Flail chest

Appeared in: DHS Staff Nurse - 2018 (Shift-2nd)

Explanation

• The key finding described is paradoxical chest movement, where a segment of the chest wall moves inward during inspiration and outward during expiration.
• This is the hallmark sign of a flail chest.
• A flail chest results from multiple rib fractures (at least two fractures in three or more adjacent ribs), creating a 'floating' segment that is no longer continuous with the rest of the thoracic cage.
• During inspiration, the negative pressure in the chest pulls this unstable segment inward, opposing the normal outward expansion of the chest.

Why Other Options Were Wrong

• Option A: Pneumothorax is air in the pleural space, leading to a collapsed lung. Its classic signs are decreased or absent breath sounds and hyperresonance on percussion, not paradoxical chest movement.
• Option B: This is a displacement of the heart and trachea, which is a complication of conditions like a tension pneumothorax. The key sign is tracheal deviation away from the affected side, not the chest wall movement described.
• Option C: This involves fluid accumulation in the lungs (edema), typically from cardiac or renal issues, causing crackles on auscultation and shortness of breath. It is not related to traumatic bony injury of the chest wall.

Related Visual

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of flail chest based on clinical signs as background academic context rather than a clinical decision trigger.
• Recognizing paradoxical respiration is a critical nursing assessment skill in trauma, as it indicates a life-threatening injury requiring immediate intervention to prevent respiratory failure.
• Flail chest significantly increases the work of breathing and can lead to hypoxia due to inadequate ventilation and associated pulmonary contusion (bruising of the lung).
• Pain control is a priority nursing intervention. Inadequate pain relief leads to shallow breathing (splinting), which causes atelectasis and pneumonia.

How to Approach the Question

• First, identify the key clinical finding in the scenario: 'the left side of the chest moves inward when the client takes a breath.'
• Recognize this abnormal movement as 'paradoxical respiration.'
• Recall the pathophysiology of common chest injuries.
• Correlate paradoxical respiration with its underlying cause. This specific movement is the defining sign of a flail chest, where a segment of the chest wall is detached due to multiple rib fractures.
• Evaluate the other options: Pneumothorax, mediastinal shift, and pulmonary congestion present with different primary signs (e.g., absent breath sounds, tracheal deviation, lung crackles) and do not cause this specific chest wall motion.

Concept Tested & Keywords

• Concept Tested: Identification of flail chest based on clinical signs.
• Stem keywords: trauma client, motor accident, chest moves inward, inspiration
• Lead-in keywords: suggestive of
• Clinical cues: The description of the chest moving inward during inspiration is the classic definition of paradoxical respiration, a key diagnostic clue.

Question ID

QNxhUWDGFGZC00r6G5wqS5

Copy ID

Reference Book

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 pp. 22-24, 23-25, 24-26