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Chest Tube Monitoring
And Troubleshooting

Master the skills to safely assess, monitor, and troubleshoot chest drainage systems in clinical practice.

NCLEX-RN

What Is a Chest Tube?

A chest tube is a flexible drain inserted into the pleural space to remove air, blood, or fluid. It re-establishes the negative pressure needed for the lungs to expand fully.

The Three-Chamber Drainage System

Collection drainage Water Seal
\(2\,\text{cm}\) water
 Suction Control
\(20\,\text{cm}\) water
 Patient → Collection → Water Seal → Suction → Wall

Why Monitoring Matters

Lung Re-Expansion
Proper function allows trapped air and fluid to escape so the lung can re-inflate.
Early Warning
Monitoring catches tension pneumothorax, leaks, and clots before harm occurs.
Patient Safety
Correct setup and troubleshooting prevent life-threatening emergencies.

Core Rule: Tidaling & Bubbling

Water Seal Tidaling Fluid rises & falls with breathing = NORMAL Bubbling Continuous = AIR LEAK Intermittent may be normal

Routine Assessment Priorities

1
Respiratory status: rate, effort, breath sounds, oxygen saturation.
2
Drainage: amount, color, consistency. Mark and time the level.
3
Water seal: check for tidaling and assess bubbling pattern.
4
Insertion site: dressing intact, no subcutaneous emphysema.
5
Tubing: patent, no kinks, dependent loops, or clamps.

Tidaling vs. Continuous Bubbling

Tidaling (Normal)
Fluid moves up on inhalation, down on exhalation. Confirms the system is patent and the tube is in the pleural space.
Continuous Bubbling (Abnormal)
Ongoing bubbles in the water seal indicate an air leak. Trace tubing from patient to system to locate it.

How to Troubleshoot Step by Step

1
Assess the patient first. Check breathing, vitals, and distress.
2
Inspect the tubing from chest to chamber for kinks or clots.
3
Check the water seal for fluid level, tidaling, and bubbling.
4
Verify suction level and connections are secure.
5
Notify the provider if the problem cannot be corrected.

Example 1: Disconnection

The chest tube becomes disconnected from the drainage system. What is the immediate nursing action?

Example 2: Tube Falls Out

The chest tube is accidentally pulled out of the chest wall. What does the nurse do first?

Example 3: Sudden Drainage Change

Collection
\(100\,\text{mL/hr}\)
 bright red, fresh Report!
\(> 100\,\text{mL/hr}\)
 bright red blood

Common Mistakes

✕ Routine Clamping
Clamping a functioning tube can trap air and cause a tension pneumothorax.
✕ Stripping/Milking
Aggressive stripping creates dangerous negative pressure and tissue damage.
✕ Raising the System
Keep the drainage system below chest level to prevent backflow.
✕ Ignoring No Tidaling
Failing to investigate absent tidaling may miss an obstruction.

Findings & Actions Summary

Normal Action Needed
Tidaling Gentle rise/fall Absent: check tubing
Bubbling Intermittent in suction Continuous: air leak
Drainage Gradual decrease \(>100\,\text{mL/hr}\) bright red
Site Dry, intact Crepitus or saturation
Disconnection Secure connections Submerge in sterile water

Key Takeaways

Question 1 of 5

A nurse observes gentle fluid movement in the water seal chamber that rises and falls with the patient's breathing. What does this indicate?

Question 2 of 5

The chest tube becomes disconnected from the drainage system. What is the nurse's priority action?

Question 3 of 5

A chest tube is accidentally pulled out of the chest wall. What should the nurse do first?

Question 4 of 5

The nurse notes continuous bubbling in the water seal chamber. What does this most likely indicate?

Question 5 of 5

To prevent backflow of drainage into the pleural space, where should the drainage system be positioned?

You're Ready!

You now know how to monitor chest drainage, recognize normal versus abnormal findings, and troubleshoot emergencies safely. Assess the patient first, then the device.