The nurse notes tidaling of the water level in the tube submerged in the water-seal chamber in a patient with closed chest tube drainage. The nurse should:

Tidaling, or the rising and falling of fluid in the water-seal chamber with the patient’s respirations, is a normal finding in a closed chest tube drainage system. It reflects pressure changes in the pleural space as the patient breathes and indicates that the system is patent and functioning properly.

Rationale for Correct Answer

1. Continue to monitor the patient: Tidaling confirms that the chest tube is maintaining negative pressure and allowing air or fluid to drain appropriately from the pleural space. As the lung re-expands, tidaling will gradually decrease and eventually stop—this is expected and not a sign of malfunction. The nurse should continue monitoring respiratory status and drainage characteristics.

Rationale for Incorrect Answers

2. Check all connections for a leak in the system: Air leaks cause continuous bubbling in the water-seal chamber, not tidaling. Since tidaling is a normal movement with respiration, there is no indication of a leak or need to inspect connections.

3. Lower the drainage collector further from the chest: The drainage system should already be positioned below the level of the chest to facilitate gravity drainage. Tidaling is unrelated to the height of the system; lowering it further does not improve function and could risk disconnection or kinking.

4. Clamp the tubing at progressively distal points away from the patient until the tidaling stops: Clamping the chest tube is contraindicated unless specifically ordered for a short diagnostic purpose. Clamping during normal tidaling interrupts drainage, increases intrathoracic pressure, and can lead to a tension pneumothorax.

Take-Home Points

• Tidaling in the water-seal chamber is a normal and expected finding that reflects changes in pleural pressure with breathing.
• Decreased or absent tidaling may indicate lung re-expansion or tube obstruction.
• Continuous bubbling, not tidaling, signals an air leak that requires investigation.
• The drainage system should remain below chest level, upright, and secure at all times.

When a chest tube is accidentally removed, the nurse’s first priority is to assess the client’s respiratory status. This determines whether the patient is experiencing respiratory distress, decreased oxygenation, or signs of a pneumothorax. Immediate assessment ensures that life-threatening complications are identified and addressed without delay.

Rationale for Correct Answer

4. Assess the client’s respiratory status: The nurse must first quickly evaluate the client’s airway, breathing, and circulation (ABCs). Assessing respiratory effort, oxygen saturation, breath sounds, and chest expansion helps determine the severity of the situation. Findings guide the urgency and type of intervention required, such as sealing the site or notifying the provider for reinsertion.

Rationale for Incorrect Answers

1. Place the tubing in sterile water to restore the water seal: This action is appropriate only if the chest tube becomes disconnected from the drainage system, not if it is removed from the client’s chest. Re-immersing the tubing in water after removal would not help because the open insertion site, not the tubing, is the concern.

2. Apply sterile gauze to the insertion site: After assessing the client, the nurse should cover the site with a sterile occlusive or petroleum gauze to prevent air entry into the pleural space, which can cause a pneumothorax. However, this comes after assessing the client’s respiratory condition.

3. Place tape around the insertion site: Taping all four sides of the dressing can trap air inside the pleural space, leading to a tension pneumothorax. The dressing should be taped on only three sides if air leakage is suspected, allowing trapped air to escape while preventing more air from entering.

Take-Home Points

• First action: Assess the client’s respiratory status to determine the impact of tube removal.
• If the tube is completely removed, apply a sterile occlusive or petroleum gauze dressing to the site.
• Do not tape all four sides—leave one side open if air is suspected to escape.
• Placing the tubing in water is only appropriate for system disconnections, not accidental removals.