Pleurodesis: Indications and Technique

Definition

• Fishman's Pulmonary Diseases and Disorders, p. 1418
• Current Surgical Therapy 14e, p. 997

Indications

1. Recurrent Malignant Pleural Effusion (MPE)

• Murray & Nadel's Textbook of Respiratory Medicine, p. 769; Fischer's Mastery of Surgery, p. 2435

2. Recurrent Spontaneous Pneumothorax

• Primary spontaneous pneumothorax (PSP): Pleurodesis is offered after a second or subsequent episode to prevent further recurrence.
• Secondary spontaneous pneumothorax (SSP): Given higher recurrence and poorer reserve, earlier pleurodesis (even after the first episode in high-risk conditions like COPD, Marfan syndrome, LAM) is considered.
• Recurrence rates: drainage alone 36%, drainage + doxycycline 13%, drainage + talc 8%.
• Fishman's Pulmonary Diseases and Disorders, p. 1418

3. Persistent Air Leak (Bronchopleural Fistula)

• Fishman's Pulmonary Diseases and Disorders, p. 1418

4. Non-Malignant Pleural Effusions (Selected Cases)

• Hepatic hydrothorax (higher failure rate, risk of infectious complications)
• Chylothorax
• Heart failure (intractable)
• Nephrotic syndrome
• Yellow nail syndrome
• Peritoneal dialysis-related effusions
• Success rate in non-malignant effusions: 47-80%.
• Fishman's Pulmonary Diseases and Disorders, p. 254

5. Lymphangioleiomyomatosis (LAM)

• Murray & Nadel's Textbook of Respiratory Medicine

Prerequisites for Successful Pleurodesis

1. Lung must be fully expandable - the visceral and parietal pleura must be able to appose. A trapped lung from visceral pleural thickening predicts failure.
2. Pleural space must be fully (or ~90%) drained - residual fluid dilutes the sclerosing agent.
3. Patient should have symptomatic improvement after drainage - confirms the effusion is the cause of symptoms.
4. No active large air leak (for effusion pleurodesis) - significant air leak reduces pleural apposition.

Methods of Pleurodesis

A. Chemical Pleurodesis

1. Bedside / Chest Tube (Talc Slurry or Doxycycline)

1. Pre-medication: Give IV analgesia; instill at least 20 mg lidocaine in 50 mL saline into the chest first (for doxycycline: drain lidocaine before instillation since lidocaine is inactivated in the acidic doxycycline environment).
2. Inject sclerosant: Aseptically pass a needle through the drainage tubing and inject the agent via large syringe, then seal the puncture site.
3. Clamp the tube: Clamp for 1-2 hours (if no air leak). If air leak is present, do NOT clamp - instead loop the tubing over an IV pole so fluid remains in the chest.
4. Position changes: Patient rolls from supine → left side up → right side up → supine every 15 minutes for 2 hours to maximize pleural surface coating.
5. Unclamp and suction: After 2 hours, unclamp and place on suction (typically -20 cm H2O) for at least 1-2 days to ensure maximal pleural apposition.

• Fischer's Mastery of Surgery, p. 2435; Current Surgical Therapy 14e, p. 997

2. Thoracoscopic Talc Poudrage (VATS or Medical Thoracoscopy)

1. Patient placed in lateral decubitus position.
2. VATS performed (1-3 ports, 5 or 10 mm scope).
3. Pleural biopsy taken if diagnosis not yet confirmed.
4. Lung expansion confirmed visually before poudrage (critical step).
5. Talc is insufflated using a pneumatic atomizer (insufflator) through the working channel of the thoracoscope, ensuring uniform distribution over the entire pleural surface under direct vision.
6. Dose: 4 g for malignant/recurrent effusions, 2 g for pneumothorax.
7. A 20-French chest tube is inserted post-procedure.
8. Suction applied (high-volume, low-pressure, -20 cm H2O), gradually titrated.

• Murray & Nadel's Textbook of Respiratory Medicine, p. 783

B. Mechanical / Surgical Pleurodesis

1. Pleurectomy - Systematically stripping the parietal pleura from the chest wall. Creates the most durable adhesion; preferred in young patients with PSP where future thoracic surgery may be needed.
2. Pleural abrasion - A dry scourer/gauze is used to abrade the parietal pleural surface, destroying its smooth surface to trigger inflammation and adhesion.
3. Chemical poudrage at VATS - Combined surgical + chemical approach.

• Bailey and Love's Short Practice of Surgery 28th Edition, p. 5435

Special Considerations

• Future thoracic surgery: Talc pleurodesis creates very strong adhesions, making any subsequent ipsilateral surgery technically difficult. Mechanical pleurodesis/pleurectomy is preferred in young patients who may eventually need lung transplant or further thoracic procedures.
• Hepatic hydrothorax: Higher failure rate; multiple chest tubes and large-volume paracentesis (for concurrent ascites) may be needed to keep the pleural space dry.
• Mesothelioma / primary pleural malignancy: Pleurodesis is generally avoided as it complicates subsequent surgical resection (e.g., pleurectomy/decortication or extrapleural pneumonectomy).
• Trapped lung: Pleurodesis will fail if the lung cannot expand. An indwelling pleural catheter (IPC) is a better alternative in this setting.

Contraindications / Poor Candidates

• Trapped lung (visceral pleural thickening - lung cannot expand)
• Chylothorax from thoracic duct injury before corrective surgery
• Primary pleural malignancy (mesothelioma) if surgical resection is planned
• Very short life expectancy where the procedure burden outweighs benefit

Side Effects

• Chest pain (pleuritic, can be severe - most common)
• Fever
• Dyspnea (transient)
• ARDS (rare, associated with talc doses >5 g or very small particle size talc - use FDA-approved, large-particle talc to minimize this risk)