What is the proper technique for performing a sterile tube thoracostomy in an adult patient with a suspected pneumothorax, hemothorax, or massive pleural effusion?

How to Perform Tube Thoracostomy

For tube thoracostomy in adults with pneumothorax, hemothorax, or pleural effusion, use ultrasound-guided placement with the Seldinger technique or blunt dissection method (avoiding trocar insertion) at the 4th-5th intercostal space in the anterior or mid-axillary line, using small-bore catheters (<20 Fr) for most non-traumatic conditions and larger tubes (≥20 Fr) for hemothorax or trauma. 1, 2

Pre-Procedure Preparation

Patient Positioning and Site Selection

• Position the patient supine or semi-recumbent with the ipsilateral arm abducted above the head
• Target insertion site: 4th-5th intercostal space at or above this level in the anterior axillary or mid-axillary line 2
• Use ultrasound to identify pleural effusion and map adjacent structures (chest wall, diaphragm, lung, heart) before insertion 1

Equipment Selection

• Small-bore catheters (<20 Fr): Preferred for most pleural effusions and non-traumatic pneumothorax 1
• Large-bore tubes (≥20 Fr): Reserved for traumatic hemothorax or when rapid drainage is essential 1, 3
• Chest tubes are measured in French units (1 Fr = 0.33 mm diameter)

Antibiotic Prophylaxis

• Administer antibiotics prior to tube insertion to reduce infection risk 3

Insertion Technique

Two Acceptable Approaches

1. Seldinger (Wire-Guided) Technique - Preferred for most cases

• Perform local anesthesia with lidocaine down to the pleura
• Insert needle into pleural space under ultrasound guidance
• Advance guidewire through the needle
• Remove needle, leaving wire in place
• Make small skin incision (1-2 cm) at wire entry site
• Advance dilators over wire to create tract
• Thread chest tube over wire into pleural cavity
• Remove wire and secure tube
• This technique achieves 78% accurate placement vs. 37% with classical surgical technique 4

2. Blunt Dissection (Surgical) Technique

• Administer local anesthesia including intercostal nerve block
• Make 2-3 cm skin incision parallel to the rib
• Blunt dissect through subcutaneous tissue and intercostal muscles using curved clamp
• Enter pleural space just above the rib (avoiding neurovascular bundle below) 2
• Use finger to sweep pleural cavity and confirm entry (if patient stable)
• Insert tube without trocar, directing it posteriorly and apically for pneumothorax or posteriorly and basally for fluid
• Secure with suture and apply occlusive dressing

Critical Technical Points

• Never use trocar insertion - associated with higher complication rates including organ injury 5, 2
• Enter above the rib to avoid the neurovascular bundle running along the inferior rib margin
• Confirm pleural entry before tube advancement
• Direct tube tip appropriately: apical for air, basal-posterior for fluid

Post-Insertion Management

Immediate Confirmation

• Connect to three-chamber drainage system (for air and fluid) or Heimlich valve (pneumothorax only) 2
• Obtain chest radiograph to confirm position
• Optimal tube position: tip should be in target area without kinking or malposition

Drainage Protocol for Pleural Effusion

• Consider irrigation with warm sterile saline upon placement - reduces need for secondary interventions 3
• Monitor output and respiratory status
• Watch for re-expansion pulmonary edema (rare but serious complication)

Specific Indications by Volume

Pneumothorax:

• Drain if >20% thoracic volume on chest X-ray or >35 mm measured radially on CT 3
• Smaller pneumothoraces may be observed; approximately 10% will fail observation 3

Hemothorax:

• Drain if volume >300 mL (calculated using Mergo formula on CT) 3

Common Pitfalls and Complications

Avoidable Errors

• Trocar use (increases organ injury risk)
• Insertion below 5th intercostal space (increases diaphragm/liver/spleen injury risk)
• Inadequate local anesthesia
• Failure to use ultrasound guidance when available
• Entering below the rib (damages neurovascular bundle)

Complications (occur in 3-25% of cases)

• Malposition or inappropriate placement
• Organ injury (lung, liver, spleen, diaphragm)
• Bleeding or vascular injury
• Infection
• Tube malfunction or dislodgement
• Persistent air leak
• Re-expansion pulmonary edema 2

Special Populations

Trauma Patients:

• Hemodynamically unstable patients require immediate tube thoracostomy
• Use larger bore tubes (≥20 Fr) for hemothorax
• Hemodynamically stable patients: imaging-guided decision making 3

High-Risk Occupations (pilots, divers):

• Lower threshold for intervention
• Consider early surgical consultation even after first pneumothorax 6

The wire-guided Seldinger technique with ultrasound guidance represents the contemporary standard for most non-traumatic pleural drainage, offering superior accuracy compared to traditional surgical approaches while maintaining safety when performed correctly 4, 5.