Needle Thoracocentesis Summary

Indication

  • Emergency treatment for suspected tension pneumothorax
  • Chest drain is definitive treatment

Contraindications

  • None (life-saving procedure)

Insertion Sites

  • Pediatric: 2nd intercostal space, midclavicular line
  • Adults: 4th or 5th intercostal space, anterior to midaxillary line

Catheter Length

  • 5 cm for smaller adults
  • 8 cm for large adults

Complications

  • Failure of decompression
  • Iatrogenic pneumothorax
  • Hemothorax/hemorrhage
  • Vascular/cardiac injury
  • Infection (pneumonia/empyema)

Key Steps

  • Administer high-flow oxygen
  • Surgically prepare site
  • Insert needle just over the rib
  • Aspirate while advancing
  • Listen for air escape
  • Advance catheter, remove needle
  • Prepare for chest tube insertion

Needle Thoracocentesis

Emergency procedure for tension pneumothorax decompression

Indications

  • Initial emergency treatment for patient with suspected tension pneumothorax
  • N.B. Chest drain is the definitive treatment for tension pneumothorax

Clinical Signs of Tension Pneumothorax

  • Severe respiratory distress
  • Decreased breath sounds on affected side
  • Hyperresonance to percussion
  • Tracheal deviation away from affected side
  • Hypotension
  • Jugular venous distension
  • Cyanosis

Contraindications

No Absolute Contraindications

Needle thoracocentesis is a life-saving procedure for tension pneumothorax. There are no contraindications when the patient's life is at risk.

Procedure

Step-by-Step Procedure
  1. Assess the patient's chest and respiratory status
  2. Administer high-flow oxygen and ventilate as necessary
  3. Surgically prepare the site chosen for insertion
  4. According to the latest (10th edition) of the ATLS:
    • For paediatric patients, the 2nd intercostal space midclavicular line is appropriate
    • For adults (especially with thicker subcutaneous tissue), use the fourth or fifth intercostal space anterior to the midaxillary line
  5. Insert an over-the-needle catheter 3 in. (5 cm for smaller adults; 8 cm for large adult) with a Luer-Lok 10 mL syringe attached into the skin; direct the needle just over the rib into the intercostal space, aspirating the syringe while advancing
  6. Puncture the pleura
  7. Remove the syringe and listen for the escape of air when the needle enters the pleural space to indicate relief of the tension pneumothorax
  8. Advance the catheter into the pleural space
  9. Stabilise the catheter and prepare for chest tube insertion
THORACOCENTESIS ANATOMY DIAGRAM

Proper needle insertion sites and technique for needle thoracocentesis

Important Considerations

  • Always insert the needle just above the rib to avoid neurovascular bundle
  • Use a catheter long enough to reach the pleural space (especially in obese patients)
  • This is a temporary measure - definitive chest tube placement must follow
  • If no air escapes, consider alternative sites or diagnoses

Complications

Failure of Decompression

  • Cannula too short to reach the pleural space
  • Improper placement of cannula
  • Blood clot obstructing cannula
  • Kinking/compression of cannula
  • Air leak rate greater than air evacuation by needle
  • Missed localised pneumothorax

Major Complications

  • Iatrogenic pneumothorax
  • Haemothorax
  • Haemorrhage
  • Major vascular and cardiac injury
  • Pneumonia and empyema

Minor Complications

  • Pain
  • Cough
  • Local haematoma
  • Atelectasis

Prevention of Complications

  • Proper patient positioning
  • Adequate site preparation
  • Appropriate needle/catheter length selection
  • Ultrasound guidance if available and time permits
  • Always insert needle above the rib to avoid neurovascular bundle

Post-Procedure Management

Immediate Actions

  • Assess for clinical improvement
  • Secure the catheter in place
  • Apply sterile dressing
  • Monitor vital signs continuously
  • Prepare for chest tube insertion

Monitoring

  • Respiratory rate and effort
  • Oxygen saturation
  • Blood pressure and heart rate
  • Breath sounds bilaterally
  • Signs of recurrent tension pneumothorax

Definitive Treatment

  • Chest tube thoracostomy is required after needle decompression
  • Appropriate tube size: 28-32Fr for adults, 12-20Fr for children
  • Connect to underwater seal drainage system
  • Chest X-ray to confirm placement and lung re-expansion