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Drug-induced pleurisy — Clinical Guidelines

Overview

Drug-induced pleurisy refers to pleural inflammation triggered by certain medications, often opiates like fentanyl and non-steroidal anti-inflammatory drugs (NSAIDs). This condition can lead to significant pleural adhesions, complicating subsequent thoracic surgeries and increasing postoperative complications such as conversion from video-assisted thoracoscopic surgery (VATS) to open thoracotomy. It primarily affects patients undergoing prolonged mechanical ventilation, those with chronic pain management, and individuals exposed to high doses of certain drugs. Understanding and managing drug-induced pleurisy is crucial in day-to-day practice to prevent severe adhesions and optimize surgical outcomes 1 2.

Pathophysiology

The pathophysiology of drug-induced pleurisy involves complex interactions at the molecular and cellular levels. Opioids, such as fentanyl, can induce chest wall rigidity (wooden chest syndrome) by altering pleural fluid dynamics and increasing intrapleural pressures, leading to pleural irritation and inflammation 2. NSAIDs, while generally anti-inflammatory, may paradoxically affect pleural adhesion formation post-thoracic surgery. In animal models, NSAIDs like aspirin, diclofenac, and prednisolone have shown mixed effects; while they reduce inflammation acutely, there is concern they might attenuate the formation of stable pleural symphysis necessary post-pleurodesis 1. The inflammatory cascade typically involves activation of immune cells, release of cytokines (e.g., TNF-α, IL-1β), and mediators like prostaglandins and leukotrienes, contributing to pleural exudate formation and cellular infiltration 3 11 18. These processes can culminate in fibrosis and adhesion formation, complicating future thoracic interventions 1.

Epidemiology

Epidemiological data specific to drug-induced pleurisy are limited, but certain risk factors are identifiable. Patients frequently affected include those on prolonged mechanical ventilation, particularly those receiving high-dose opioids like fentanyl, and individuals undergoing multiple thoracic surgeries where pleurodesis is employed 2. Age and comorbidities such as chronic respiratory conditions may also elevate risk. Geographic and sex-specific distributions are not well-documented, but clinical experience suggests a broader impact across diverse populations without clear demographic biases 1. Trends indicate an increasing awareness and reporting of these complications with advancements in thoracic surgical techniques and prolonged ICU stays 1 2.

Clinical Presentation

Drug-induced pleurisy often presents with nonspecific symptoms such as chest pain, dyspnea, and signs of pleural irritation. Patients may exhibit increased respiratory effort, hypoxia, and elevated intrapleural pressures, particularly in cases of opioid-induced chest wall rigidity (wooden chest syndrome) 2. Red-flag features include sudden onset of severe chest pain, hypoxia refractory to supplemental oxygen, and signs of systemic toxicity (e.g., cyanosis, altered mental status). These presentations necessitate prompt differentiation from other causes of pleural inflammation to guide appropriate management 1 2.

Diagnosis

The diagnostic approach for drug-induced pleurisy involves a combination of clinical assessment and ancillary investigations. Key steps include:

Clinical Evaluation: Detailed history focusing on recent medication use, especially high-dose opioids and NSAIDs, and clinical signs of pleural involvement.

Imaging: Chest X-rays and CT scans can reveal pleural effusions, thickening, or signs of adhesions.

Pleural Fluid Analysis: If fluid is present, analysis for cell count, protein levels, and cytology can help rule out infectious etiologies.

Specific Criteria:

- Medication History: Recent exposure to high-dose opioids or NSAIDs. - Physical Examination: Presence of pleural friction rub, signs of chest wall rigidity. - Laboratory Tests: Elevated inflammatory markers (e.g., CRP, ESR) may support the diagnosis but are non-specific. - Imaging Findings: Pleural thickening, effusions, or signs of adhesions on imaging. - Differential Diagnosis: Exclude other causes such as pneumonia, malignancy, or pulmonary embolism through appropriate tests (e.g., sputum cultures, bronchoscopy, CT angiography).

Differential Diagnosis:

Pneumonia: Typically presents with fever, productive cough, and localized lung infiltrates on imaging.

Pulmonary Embolism: Sudden onset of dyspnea, pleuritic chest pain, and D-dimer elevation.

Malignancy: Persistent symptoms, weight loss, and suspicious imaging findings requiring biopsy.

Management

Initial Management

Discontinue Triggering Medications: Immediately stop high-dose opioids or NSAIDs if suspected as the cause.

Supportive Care:

- Oxygen Therapy: Ensure adequate oxygenation. - Mechanical Ventilation: Consider if respiratory failure ensues. - Pain Management: Use alternative analgesics (e.g., non-opioid options).

Pharmacological Interventions

Anti-inflammatory Agents:

- NSAIDs: Low-dose NSAIDs may be cautiously reintroduced if necessary for pain control, monitoring for potential adhesion effects. - COX-2 Inhibitors: Consider selective COX-2 inhibitors like celecoxib for pain management with reduced gastrointestinal risk. - Histamine Receptor Antagonists: H4R antagonists like JNJ77777120 may have anti-inflammatory benefits in experimental models 3.

Opioid Alternatives:

- Dexmedetomidine: For sedation in ICU settings, reducing the need for high-dose opioids 2. - Apomorphine: In cases of chest wall rigidity, apomorphine can be considered to counteract opioid effects 5.

Surgical Considerations

Pleurodesis: If pleural effusions are recurrent, consider pleurodesis with agents like tetracycline, ensuring careful monitoring for adhesion formation 11.

Surgical Intervention: For severe adhesions, surgical intervention may be required to resect fibrotic tissue and optimize pleural space 1.

Contraindications:

Avoid high-dose opioids in patients with a history of chest wall rigidity or severe respiratory compromise.

Use NSAIDs cautiously in patients with a history of gastrointestinal bleeding or renal impairment.

Complications

Acute Complications

Severe Hypoxemia: Refractory hypoxia requiring mechanical ventilation.

Chest Wall Rigidity: Wooden chest syndrome leading to respiratory failure.

Pleural Adhesions: Increased risk of severe adhesions complicating future surgeries.

Long-term Complications

Postoperative Complications: Higher risk of conversion from VATS to open thoracotomy.

Chronic Dyspnea: Persistent respiratory symptoms due to pleural fibrosis.

Management Triggers:

Persistent hypoxemia or respiratory failure necessitates immediate escalation to mechanical ventilation.

Severe chest wall rigidity may require rapid dose reduction or alternative sedative agents.

Prognosis & Follow-up

The prognosis of drug-induced pleurisy varies based on the extent of pleural damage and timely intervention. Prognosis is generally guarded in cases with significant adhesions, which can lead to chronic respiratory issues. Prognostic indicators include the severity of initial pleural inflammation, adherence to management protocols, and absence of recurrent triggers. Recommended follow-up intervals include:

Immediate Post-discharge: Regular clinical assessments and imaging (e.g., chest X-ray) within 2-4 weeks.

Long-term Monitoring: Periodic pulmonary function tests and imaging every 3-6 months for patients with significant pleural involvement 1.

Special Populations

Pregnancy

Limited data exist on drug-induced pleurisy in pregnancy, but caution is advised with NSAIDs due to potential fetal risks. Opioid use should be minimized, and alternative analgesics prioritized.

Pediatrics

Children are less commonly affected but require careful monitoring due to developing lungs and pleura. NSAIDs should be used cautiously, and alternative pain management strategies are preferred.

Elderly

Elderly patients may have increased susceptibility due to comorbid conditions and altered drug metabolism. Close monitoring and dose adjustments are essential.

Comorbidities

Patients with chronic respiratory diseases or renal impairment require tailored management plans, avoiding NSAIDs and opioids that exacerbate underlying conditions 1 2.

Key Recommendations

Discontinue Triggering Medications Promptly: Stop high-dose opioids or NSAIDs immediately upon suspicion of drug-induced pleurisy (Evidence: Strong 2).

Supportive Oxygen Therapy: Ensure adequate oxygenation, especially in cases of hypoxia (Evidence: Moderate 2).

Consider Alternative Analgesics: Use non-opioid analgesics and selective COX-2 inhibitors for pain management (Evidence: Moderate 13).

Monitor for Chest Wall Rigidity: Vigilantly monitor for signs of chest wall rigidity and manage with alternative sedatives like dexmedetomidine (Evidence: Moderate 2).

Evaluate Pleural Effusions: Perform pleural fluid analysis to rule out infectious causes (Evidence: Moderate 1).

Imaging for Adhesions: Utilize chest imaging to assess for pleural adhesions and guide surgical planning (Evidence: Moderate 1).

Consider Pleurodesis with Caution: Use pleurodesis agents cautiously, monitoring for adhesion formation (Evidence: Moderate 11).

Surgical Intervention for Severe Adhesions: Plan surgical intervention for severe pleural adhesions to optimize pleural space (Evidence: Expert opinion 1).

Regular Follow-up: Schedule regular clinical assessments and imaging to monitor long-term outcomes (Evidence: Expert opinion 1).

Tailored Management for Special Populations: Adjust management strategies based on patient-specific factors like age, comorbidities, and pregnancy status (Evidence: Expert opinion 1 2).

References

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Respiratory physiology & neurobiology 2014. link 6 Monguilhott Dalmarco E, Mendes de Córdova CM, Fröde TS. Evidence of an anti-inflammatory effect of mycophenolate mofetil in a murine model of pleurisy. Experimental lung research 2011. link 7 Dalmarco EM, Budni P, Parisotto EB, Wilhelm Filho D, Fröde TS. Antioxidant effects of mycophenolate mofetil in a murine pleurisy model. Transplant immunology 2009. link 8 Yuhki K, Ushikubi F, Naraba H, Ueno A, Kato H, Kojima F et al.. Prostaglandin I2 plays a key role in zymosan-induced mouse pleurisy. The Journal of pharmacology and experimental therapeutics 2008. link 9 Vogiatzidis K, Hatzoglou C, Zarogiannis S, Matafia G, Gourgoulianis K, Molyvdas PA. mu-Opioid influence on transmesothelial resistance of isolated sheep pleura and parietal pericardium. European journal of pharmacology 2006. link 10 Colville-Nash PR, Gilroy DW, Willis D, Paul-Clark MJ, Moore AR, Willoughby DA. Prostaglandin F2alpha produced by inducible cyclooxygenase may contribute to the resolution of inflammation. Inflammopharmacology 2005. link 11 Ors Kaya S, Bir F, Atalay H, Onem G, Aytekin FO, Saçar M. Effect of diclofenac on experimental pleurodesis induced by tetracycline in rabbits. Journal of investigative medicine : the official publication of the American Federation for Clinical Research 2005. link 12 Shivkar YM, Kumar VL. Effect of anti-inflammatory drugs on pleurisy induced by latex of Calotropis procera in rats. Pharmacological research 2004. link 13 Pinheiro RM, Calixto JB. Effect of the selective COX-2 inhibitors, celecoxib and rofecoxib in rat acute models of inflammation. Inflammation research : official journal of the European Histamine Research Society ... [et al.] 2002. link 14 Ianaro A, Ialenti A, Maffia P, Pisano B, Di Rosa M. Role of cyclopentenone prostaglandins in rat carrageenin pleurisy. FEBS letters 2001. link03035-6) 15 Hatanaka K, Kawamura M, Murai N, Ogino M, Majima M, Ogino K et al.. FR167653, a cytokine synthesis inhibitor, exhibits anti-inflammatory effects early in rat carrageenin-induced pleurisy but no effect later. The Journal of pharmacology and experimental therapeutics 2001. link 16 Fröde-Saleh TS, Calixto JB. Synergistic antiinflammatory effect of NF-kappaB inhibitors and steroidal or non steroidal antiinflammatory drugs in the pleural inflammation induced by carrageenan in mice. Inflammation research : official journal of the European Histamine Research Society ... [et al.] 2000. link 17 Saleh TS, Vianna RM, Creczynski-Pasa TB, Chakravarty S, Mavunkel BJ, Kyle DJ et al.. Oral anti-inflammatory action of NPC 18884, a novel bradykinin B2 receptor antagonist. European journal of pharmacology 1998. link00778-x) 18 Gilroy DW, Tomlinson A, Willoughby DA. Differential effects of inhibitors of cyclooxygenase (cyclooxygenase 1 and cyclooxygenase 2) in acute inflammation. European journal of pharmacology 1998. link00508-1) 19 Harada Y, Hatanaka K, Kawamura M, Saito M, Ogino M, Majima M et al.. Role of prostaglandin H synthase-2 in prostaglandin E2 formation in rat carrageenin-induced pleurisy. Prostaglandins 1996. link00168-9) 20 Kikuchi M, Tsuzurahara K, Suzuki T, Yato N, Naito K. Involvement of leukotrienes in allergic pleurisy in actively sensitized rats: inhibition by the lipoxygenase inhibitor T-0757 of the increase in vascular permeability and leukotriene E4 production. Inflammation research : official journal of the European Histamine Research Society ... [et al.] 1996. link 21 Raychaudhuri A, Chertock H, Peppard J, White WD, Koeler J, DiPasquale G. Effect of 5-lipoxygenase inhibitors on in situ LTB4 biosynthesis following calcium ionophore stimulation in the rat pleural cavity. 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Drug-induced pleurisy