If a chest tube separates and becomes contaminated, what is the recommended action?

If a chest tube separates and becomes contaminated, what is the recommended action?

• A. Submerge distal end 1-2 cm below the surface of sterile water to create a water seal
• B. Apply pressure with a dressing
• C. Remove the tube completely
• D. Use tape alone

Answer: (A)

The important idea is re-establishing a water seal to prevent air from entering the pleural space when the chest tube system is compromised. The water-seal chamber acts like a one-way valve: submerging the exposed distal end in sterile water creates a barrier so air cannot be drawn back into the chest. Placing the end about 1–2 cm below the water surface provides an effective seal while still allowing any ongoing air leak to be observed as bubbles. This immediate step helps prevent pneumothorax from developing due to system separation or contamination. Other actions—pressing on the dressing, removing the tube, or taping without a water seal—do not restore the protective barrier and can allow air entry or loss of drainage.

The important idea is re-establishing a water seal to prevent air from entering the pleural space when the chest tube system is compromised. The water-seal chamber acts like a one-way valve: submerging the exposed distal end in sterile water creates a barrier so air cannot be drawn back into the chest. Placing the end about 1–2 cm below the water surface provides an effective seal while still allowing any ongoing air leak to be observed as bubbles. This immediate step helps prevent pneumothorax from developing due to system separation or contamination. Other actions—pressing on the dressing, removing the tube, or taping without a water seal—do not restore the protective barrier and can allow air entry or loss of drainage.