The nurse assesses the water seal chamber of a closed chest drainage system and notes that fluctuations are absent in the chamber. What intervention should the nurse implement?

1. A

   Assessing for an air leak

2. B

   Un-kinking the tubing

3. C

   Documenting that the lung has re-expanded

4. D

   Documenting that the lung has not yet re-expanded

Appeared in: SGPGI Nursing Officer-2022

Explanation

• The absence of fluctuation (tidaling) in the water seal chamber suggests two primary possibilities: an obstruction in the drainage system or the re-expansion of the lung.
• The nurse's first priority is to troubleshoot the equipment to rule out an obstruction.
• Common obstructions include kinks in the tubing, the patient lying on the tube, or dependent loops filled with fluid.
• Un-kinking the tubing is a direct and immediate intervention to resolve a potential obstruction and restore the system's function.

Why Other Options Were Wrong

• Option A: Assessing for an air leak is the correct action when there is continuous bubbling in the water seal chamber, not when fluctuations are absent.
• Option C: This is a possible reason for absent tidaling, but it is a conclusion, not an initial intervention. The nurse must first rule out a system obstruction. Documenting re-expansion is premature and requires further assessment, such as auscultating breath sounds and obtaining a chest X-ray for confirmation.
• Option D: This is clinically incorrect. If the lung had not re-expanded, tidaling would be expected to be present as pressure in the pleural space would still change with respiration.

Related Visual

Clinical Relevance

• Nursing practice connection: Knowing Troubleshooting a chest drainage system helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
• Systematic troubleshooting of chest drainage systems is a critical nursing skill. Always check the patient and then the machine/equipment.
• Failure to resolve an obstruction in a chest tube can prevent air or fluid from escaping the pleural space, leading to a rapid accumulation and causing a tension pneumothorax, a life-threatening emergency.
• What if? If the nurse assesses the patient, finds the tubing is patent with no kinks, and breath sounds are now equal bilaterally, the next step would be to notify the healthcare provider, as this suggests lung re-expansion and the chest tube may be ready for removal after confirmation with a chest X-ray.

How to Approach the Question

• First, identify the key clinical finding presented in the question: 'fluctuations are absent' in the water seal chamber of a chest drainage system.
• Recall the two main reasons for absent tidaling: 1) an obstruction in the system, or 2) the lung has fully re-expanded.
• Apply the nursing process and principles of patient safety. The first step is always to assess and troubleshoot the equipment to rule out a problem that could harm the patient.
• Evaluate the options based on this principle. Un-kinking the tubing directly addresses a potential obstruction.
• Eliminate the other options. Assessing for an air leak is for a different sign (bubbling). Documenting is a later step that follows assessment and confirmation, not the initial intervention.

Concept Tested & Keywords

• Concept Tested: Troubleshooting a chest drainage system
• Stem keywords: closed chest drainage system, water seal chamber, fluctuations absent
• Lead-in keywords: What intervention
• Clinical cues: Absence of tidaling is the key finding, which points to either obstruction or lung re-expansion.

Question ID

QZNVJQ82Wj2h4RWd4sHXrS

Copy ID

Reference Book

E6 Nursing Fundamentals Potter Perry 12e Part 5 pp. 36-38, 33-35