A nurse is caring for a client who has a chest tube in place to a closed chest drainage system. Which of the following findings should indicate to the nurse that the client’s lung has expanded?
A.
No fluctuations in the water seal chamber
B.
No reports of pleuritic chest pain
C.
Occasional bubbling in the water seal chamber
D.
Oxygen saturation of 95%
The Correct Answer and Explanation is:
The correct answer is A. No fluctuations in the water seal chamber.
Explanation:
A chest tube is used to drain air, fluid, or blood from the pleural space, allowing the lung to re-expand and function normally. The closed chest drainage system typically consists of three chambers: a collection chamber, a water seal chamber, and a suction control chamber. Monitoring the water seal chamber is crucial for assessing lung re-expansion and ensuring the chest tube system is functioning properly.
- Water Seal Chamber and Fluctuations:
- The water seal chamber is crucial in indicating the presence or absence of pleural fluid and pressure changes. Normally, the water seal chamber should exhibit fluctuations, known as tidaling, with each breath. This fluctuation indicates that the chest tube is effectively draining air or fluid and that there is a pressure gradient between the pleural space and the atmosphere.
- No fluctuations in the water seal chamber may suggest that the lung has re-expanded and there is no longer a significant pressure difference between the pleural space and the chest cavity. It could also indicate that the system is clogged or there is an issue with the chest tube. However, in the context of lung re-expansion, the absence of fluctuations is often a positive sign that the lung has expanded.
- Other Options:
- B. No reports of pleuritic chest pain: While decreased or absence of pleuritic chest pain may occur with lung re-expansion, it is not a direct indicator of the lung’s physical expansion as seen in the water seal chamber.
- C. Occasional bubbling in the water seal chamber: Occasional bubbling could indicate an air leak in the system rather than lung re-expansion. Continuous bubbling suggests a persistent air leak that may need further investigation.
- D. Oxygen saturation of 95%: While an oxygen saturation level of 95% is generally acceptable and suggests adequate oxygenation, it does not specifically reflect the mechanical aspect of lung expansion related to the chest tube.
In summary, the absence of fluctuations in the water seal chamber is the most direct indicator of lung re-expansion, as it reflects the normalization of pressures and cessation of drainage activities related to the lung’s previous collapse or fluid accumulation.