A nurse is caring for a client with a left-sided chest tube attached to a wet suction chest tube system. Which observation by the nurse would require immediate intervention?

Following placement of a chest tube connected to a wet-suction drainage system, certain observations indicate normal function (such as gentle suction-chamber bubbling and a secure occlusive dressing), while others require immediate correction to prevent impaired drainage and respiratory compromise. A dependent loop hanging off the edge of the bed allows fluid to collect and obstruct flow, so it requires immediate intervention to restore proper, gravity-assisted drainage.

Rationale for Correct Answer

2. Dependent loop hanging off the edge of the bed: Dependent loops permit fluid to pool, creating a site of obstruction and increasing the risk of impaired drainage, backflow, and possible tension physiology. The tubing should run straight, without kinks or dependent loops, and remain below chest level to ensure continuous gravity drainage.

Rationale for Incorrect Answers

1. Bubbling in the suction chamber: Gentle, continuous bubbling in the suction control chamber is an expected finding in a wet-suction system and indicates the suction source is functioning. Only excessive or violent bubbling would prompt further assessment for excessive suction or evaporation.
3. Banded connections between tubing sections: Secured (taped or banded) connections are appropriate and help maintain an airtight system, preventing air leaks.
4. Occlusive dressing over chest tube insertion site: An occlusive dressing at the insertion site is correct practice to prevent air entry and infection; it does not require intervention.

Take-Home Points

• Dependent loops in drainage tubing must be eliminated immediately to prevent obstruction and backflow.
• Keep the drainage tubing straight, below chest level, and free of kinks or dependent areas.
• Gentle bubbling in the suction chamber and a secure occlusive dressing are expected, appropriate findings.
• Secure connections (taped/banded) help prevent air leaks and maintain system integrity.

When assisting with chest tube removal, the nurse should instruct the client to perform the Valsalva maneuver. This involves taking a deep breath, holding it, and bearing down as if exhaling forcefully with a closed airway. The maneuver increases intrathoracic pressure, preventing air from entering the pleural space during tube removal and reducing the risk of pneumothorax.

Rationale for Correct Answer

4. Perform the Valsalva maneuver: The Valsalva maneuver temporarily increases intrathoracic pressure, which helps seal the pleural space as the tube is withdrawn. This technique prevents air from being sucked into the chest cavity and supports lung re-expansion. The nurse should also ensure that a sterile occlusive dressing is immediately applied to the site after removal to maintain a closed system.

Rationale for Incorrect Answers

1. Lie on his left side: Positioning on a particular side is not necessary during chest tube removal. The client is typically positioned in a semi-Fowler’s or supine position to allow comfort and easy access to the insertion site.

2. Use the incentive spirometer: Incentive spirometry is useful for promoting lung expansion after the procedure, not during removal. It should be resumed once the site is sealed and stable to prevent atelectasis.

3. Cough at regular intervals: Coughing during removal could force air into the pleural space through the open site, increasing the risk of pneumothorax. Controlled breath-holding or the Valsalva maneuver is safer and more effective.

Take-Home Points

• Instruct the client to perform the Valsalva maneuver during chest tube removal to prevent air entry into the pleural space.
• Immediately apply a sterile occlusive dressing after tube removal to maintain a closed seal.
• The semi-Fowler’s position is ideal for comfort and accessibility during removal.
• Incentive spirometry should be used after the procedure to promote lung expansion.