Management of Spontaneous Pneumothorax

Initial Assessment and Treatment

• The American Thoracic Society recommends classifying spontaneous pneumothorax as primary or secondary, assessing clinical stability, and measuring pneumothorax size to determine the appropriate treatment approach 1, 2, 3, 4
• Clinically stable patients with small primary pneumothorax (<2 cm) can be managed with observation, while those with larger pneumothorax or secondary pneumothorax may require intervention 1, 2, 3, 4
• The British Thoracic Society suggests that patients with primary spontaneous pneumothorax and minimal symptoms can be treated with simple aspiration, with a success rate of 59-83% 2, 3

Treatment Algorithm for Primary Spontaneous Pneumothorax

• For small primary pneumothorax with minimal symptoms, observation alone is sufficient, with administration of high-flow oxygen (10 L/min) to increase reabsorption rate 1, 2
• For symptomatic or large primary pneumothorax, simple aspiration is the first-line treatment, with a success rate of 59-83% 2, 3
• For unstable primary pneumothorax, immediate insertion of a 16F-22F chest tube is recommended, with attachment to a water seal device with or without suction 4, 2

Treatment Algorithm for Secondary Spontaneous Pneumothorax

• For small secondary pneumothorax (<1-2 cm), hospital admission with observation is recommended, even for small pneumothorax, due to the potential for rapid deterioration 1
• For large secondary pneumothorax (>2 cm), immediate intercostal tube drainage is recommended, with use of a 16F-22F chest tube for stable patients and a 24F-28F chest tube for unstable patients or those requiring mechanical ventilation 1, 3, 4, 5

Special Situations

• For tension pneumothorax, immediate insertion of a cannula into the second intercostal space in the mid-clavicular line is recommended, with leave in place until a functioning intercostal tube can be positioned 1, 3
• For breathless patients, active intervention is required regardless of pneumothorax size, with immediate insertion of a chest tube or other intervention as needed 1
• For cystic fibrosis patients, early and aggressive treatment is recommended, with consideration of surgical intervention after the first episode if the patient is fit 1, 3

Chest Tube Management and Removal

• The American College of Chest Physicians recommends removing chest tubes in a staged manner to ensure air leak has resolved, with chest radiograph demonstrating complete resolution of pneumothorax 4, 2
• A bubbling chest tube should never be clamped, and non-bubbling chest tubes should generally not be clamped, except under specialist supervision in a dedicated ward 1

Prevention of Recurrence

• Medical or surgical thoracoscopy is the preferred management for recurrence prevention, with performance of staple bullectomy combined with parietal pleurectomy, talc insufflation, or parietal pleural abrasion 5
• Chemical pleurodesis can be used when surgery is contraindicated, with talc slurry or doxycycline as preferred agents 5

Discharge Instructions and Follow-up

• Patients must avoid air travel until follow-up chest radiograph confirms complete resolution (typically 6 weeks), and diving should be permanently avoided unless bilateral surgical pleurectomy has been performed 1, 2, 3
• Schedule follow-up to ensure complete resolution, with consideration of recurrence prevention strategies as needed 1, 2, 3

Management of Spontaneous Pneumothorax

Initial Assessment and Treatment

• The British Medical Journal recommends using a 16-gauge or larger cannula at least 3 cm long in the second intercostal space mid-clavicular line for simple aspiration in primary spontaneous pneumothorax 6
• Discontinue aspiration if resistance is felt, patient coughs excessively, or >2.5 L is aspirated, as suggested by the British Medical Journal 6
• The American College of Chest Physicians suggests that for non-bubbling tubes, 41% of experts never clamp; others clamp 5-12 hours after last evidence of air leak 7
• Repeat chest radiograph 13-23 hours after last evidence of air leak before tube removal, as recommended by the American College of Chest Physicians 7
• Continue observation for 5 days before encouraging surgical intervention in patients initially refusing surgery, according to the American College of Chest Physicians 7
• Withdraw tube while patient holds breath in full inspiration, and prescribe adequate oral and intramuscular analgesia, as suggested by the British Medical Journal 6
• Referral to respiratory specialist is more likely in patients with chronic lung disease, as drainage procedures are less successful, according to the British Medical Journal 6
• Observe overnight whether or not aspiration was performed in patients with chronic lung disease, as recommended by the British Medical Journal 6
• Provide written discharge instructions to return immediately if breathlessness worsens, as suggested by the British Medical Journal 6
• Talc slurry or doxycycline are preferred agents for chemical pleurodesis when surgery is contraindicated, according to the American College of Chest Physicians 7
• Instillation through chest tube is appropriate for non-operative candidates, as recommended by the American College of Chest Physicians 7