Effect of an indwelling pleural catheter vs chest tube and talc pleurodesis for relieving dyspnea in patients with malignant pleural effusion: the TIME2 randomized controlled trial

Oncolytic viruses: a promising therapy for malignant pleural effusion and solid tumors

Oncolytic viruses (OVs) are natural or recombinant viruses that can directly lyse tumor cells without damaging normal cells. They enhance anti-tumor immunity by releasing antigens and activating inflammatory responses within the tumor microenvironment (TME). This offers a new therapeutic approach for MPE and solid tumors. This review discusses the progress of OVs administered via intrapleural and intratumoral routes, emphasizing their potential in MPE treatment and the challenges posed by the complex intrapleural environment, which affects the direct interaction between OVs, tumor cells, and immune cells. This review also discusses the regulatory barriers, safety concerns and accessibility of oncolytic virus therapy.

Predictors of Survival in Metastatic Malignant Pleural Effusions: The GASENT Score

OBJECTIVE

The therapeutic approach for metastatic malignant pleural effusion depends on the patient's life expectancy. Can survival be accurately estimated in these patients using a risk-prediction model?

METHODS

A prospective, single-center study was conducted to examine the prognostic value of pre-established variables (multivariate Cox model). Subsequently, a prognostic score was developed and validated. The inclusion period was 11 years long. Follow-up was conducted until death or for a minimum of 12 months.

RESULTS

The derivation and validation cohorts included 475 and 205 patients, respectively. The prognostic score GASENT (Galicia, Age, Sex, ECOG-PS, Neutrophil/lymphocyte ratio, and Tumor type) was derived from the multivariate analysis of survival. Categorization of patients in the derivation cohort into low-, moderate-, or high-risk yielded median survival times of 477 days (377-665; n=159), 108 days (83-156; n=158), and 35 days (27-47; n=158), respectively. Survival rates at 1, 3, and 6 months were 92%, 83%, and 72%, respectively, for the low-risk group; 80%, 55%, and 36%, respectively, for the moderate-risk group; and 55%, 23%, and 13%, respectively, for the high-risk group. The analysis of areas under the curve revealed that the GASENT model was superior to the LENT score as a survival predictive model at 1 (0.777 vs. 0.737; p=0.009), 3 (0.810 vs. 0.778; p=0.009), and 6 months (0.812 vs. 0.780; p=0.007).

CONCLUSIONS

The GASENT predictive model estimates survival in patients with metastatic malignant effusions with significantly greater accuracy than the scores categorizing patients by risk groups.

Autologous Blood Pleurodesis Through an Indwelling Pleural Catheter for the Management of Prolonged Air Leak in a Malignant Hydropneumothorax

The British Thoracic Society guidelines recommend a surgical opinion in cases of prolonged air leak or failure of lung re-expansion after 3-5 days. The management of prolonged air leak in non-surgical candidates often proves to be more challenging, with no expert consensus guidelines on treatment options. There is a paucity of data for the treatment of patients with a prolonged air leak in the setting of a hydropneumothorax, who are not suitable surgical candidates. We present the case of a novel treatment approach for an 89-year-old male with a symptomatic, large malignant pleural effusion treated initially with a routine chest tube drainage. Subsequent management was complicated by a hydropneumothorax with a persistent and large volume air leak. He was treated successfully with an autologous blood pleurodesis using an indwelling pleural catheter. Here we describe a novel management approach for persistent air-leak in the setting of a malignant hydropneumothorax. Autologous blood pleurodesis via an indwelling pleural catheter appears to be a safe and effective treatment option for non-surgical candidates and allows ongoing long-term drainage of a malignant effusion and air leak.

The Impact of Video-assisted Thoracoscopic Versus Percutaneous Tunneled Pleural Catheter Techniques on Pleurodesis Outcomes: A Retrospective, Single-center Study

BACKGROUND

Tunneled pleural catheters (TPCs) generate an inflammatory reaction, which, along with frequent drainage, aids in achieving pleurodesis enabling removal in 30% to 50% of patients. However, it is unknown whether the technique of TPC placement influences pleurodesis outcomes.

METHODS

This is a retrospective, single-center study of patients who underwent TPC placement from 2010 through 2018. Pleurodesis success was defined as TPC removal within 90 days of placement in the setting of no further drainage and in the absence of catheter malfunction, infection, patient's choice for another treatment modality, or other catheter-related complications. Pleurodesis failure was defined as patients who did not have TPC removal within 90 days of insertion.

RESULTS

A total of 326 patients underwent TPC insertion by thoracic surgery, interventional pulmonology, or interventional radiology. Fourteen patients were excluded due to insufficient follow-up. Of the 312 patients included in the final analysis, 32.7% achieved pleurodesis. Patients who had their TPC inserted thoracoscopically achieved higher pleurodesis success compared with a percutaneous technique (61.2% vs 24.9%, P < 0.001). Thoracoscopically placed catheters had two times greater chance of removal than those inserted percutaneously (hazard ratio: 2.04, 95% CI: 1.14-3.64, P = 0.02) after controlling for pleural biopsies and sclerosing agents used during thoracoscopy.

CONCLUSION

Thoracoscopic TPC placements may be associated with higher pleurodesis rates compared with a percutaneous technique. Our results are only hypothesis-generating, and these findings warrant confirmation in prospective studies.

Roles of pediatric surgeons in palliative pediatric oncology

Pediatric surgeons engaged in oncology will inevitably treat patients receiving palliative care, but their role in this context is poorly described. This article identifies some of the challenges and opportunities of surgical involvement in pediatric oncology palliative care, underscoring how the surgeon's expertise can be exploited to significantly benefit children with cancer. Specific examples of skills (procedural, communication, and coordination) that surgeons can provide to the multidisciplinary palliative care teams are described and the importance of collaboration is highlighted.

Impact of educational videos and user guide on indwelling pleural catheter caregiver training and unplanned healthcare encounters

BACKGROUND

Indwelling pleural catheters (IPCs) are an effective first line option for the management of symptomatic malignant pleural effusions. However, patients with IPCs often require unplanned healthcare encounters (UHEs) due to complications or concerns with IPC care and drainage.

LOCAL PROBLEM

There is a lack of readily accessible IPC-specific educational material to support caregiver training (CGT). As IPC care and drainage are performed primarily by patients and caregivers in our country due to the lack of community nursing support, ineffective CGT may lead to increased UHEs due to caregiver knowledge gaps or poor confidence in managing and caring for IPCs.

AIMS

We aim to reduce the number of IPC-related UHEs.

METHODS AND INTERVENTIONS

We used a 5-why diagram and identified a lack of appropriate educational material as a key factor contributing to repeated UHEs. We therefore produced and employed IPC-specific educational videos and user guides, using a 'Plan-Do-Study-Act' approach, into our CGT programme. Patient demographics and clinical outcomes were collected prospectively for 166 consecutive patients with IPC insertions, with 72 patients in the preintervention group and 94 in the postintervention group. Survey questionnaires addressing caregiver competency and confidence were also administered after CGT using these tools.

RESULTS

There was a significant decrease in the proportion of patients who had ≥2 (8.5% vs 40.9%, p<0.001) or ≥3 UHEs (3.2% vs 31.8%, p<0.001) in the intervention group. There was also a higher caregiver competency score achieved in the intervention group (7 (IQR: 7-7) vs 5 (IQR: 5-7), p<0.001). There was no difference in overall complication and IPC-related infection rates between groups.

CONCLUSION

IPC-specific educational videos and resources, which are readily accessible and easily implemented into CGT programmes, reduce UHEs due to IPC-related issues and may improve caregiver knowledge and competency in IPC care and drainage.

Exploring prognostic precision: a nomogram approach for malignant pleural effusion in lung cancer

BACKGROUND

Patients with lung cancer and malignant pleural effusion (MPE) often have poor prognoses. Accurate prognostic tools are needed to guide interventions and improve outcomes.

METHODS

We retrospectively analyzed clinical and imaging data from MPE patients at two medical centers. A nomogram was developed and externally validated. Clinical and imaging features were refined using least absolute shrinkage and selection operator (LASSO), and independent predictors were identified via multivariate logistic regression. Predictors were integrated into the nomogram, whose predictive performance, calibration, and clinical utility were evaluated using statistical analyses, including receiver operating characteristic (ROC) curves, calibration curves, Hosmer-Lemeshow tests, and decision curve analysis (DCA). Survival curves illustrated prognostic differences among risk groups.

RESULTS

The final nomogram included five variables: Lactate Dehydrogenase (LDH) levels in pleural fluid, clarity of pleural effusion, treatment regimen, presence of pericardial effusion, and total volume of pleural effusion. In both cohorts, the nomogram demonstrated strong predictive accuracy (Area Under the Curve (AUC): 0.929 and 0.941, respectively) and excellent calibration (Hosmer-Lemeshow test p-values: 0.944 and 0.425, respectively). DCA confirmed the nomogram's clinical utility. Risk stratification revealed significant survival disparities among patients.

CONCLUSION

Our nomogram accurately predicts the prognosis of lung cancer patients with MPE at initial diagnosis, incorporating key variables such as LDH levels in pleural fluid, clarity of pleural effusion, treatment regimen, pericardial effusion, and total volume of pleural effusion. Its robust predictive performance, calibration, and clinical utility support its use in guiding clinical decision-making for this patient population.

[Management of Malignant Pleural Effusion]

Malignant pleural effusion is a common diagnosis in metastasized cancers. It is always of palliative character. Main symptoms are dyspnoea and reduced quality of life. Diagnosis is made by ultrasound-guided puncture of the pleural effusion (cytology) and often video-assisted thoracic surgery with biopsy of the pleural surface (histology). The goal of treatment is a fast, sustainable, minimally invasive, patient-centred therapy that increases quality of life. Besides systemic therapy and best supportive care the patient can be treated with local therapy including either pleurodesis (via drainage or VATS) or an indwelling-pleural catheter (IPC). Decision for one of these procedures is made upon performance index (ECOG), expandability of the lung, prognosis and the patient's wish. For the first technique, the lung must be expandable. The latter one (IPC) can be implanted both with expandable and trapped lung. Both are similarly effective in symptom control.

Emerging advances in drug delivery systems (DDSs) for optimizing cancer complications

The management and treatment of tumor complications pose continuous challenges due to the inherent complexity. However, the advent of drug delivery systems (DDSs) brings promising opportunities to address the tumor complications using innovative technological approaches. This review focuses on common oncological complications, including cancer thrombosis, malignant serous effusion, tumor-associated infections, cancer pain, and treatment-related complications. Emphasis was placed on the application and potential of DDSs in mitigating and treating these tumor complications, and we delved into the underlying mechanisms of common cancer-associated complications, discussed the limitations of conventional treatments, and outlined the current status and potential development of DDSs for various complications in this review. Moreover, we have discussed the existing challenges in DDSs research, underscoring the need for addressing issues related to biocompatibility and targeting of DDSs, optimizing drug delivery routes, and enhancing delivery efficiency and precision. In conclusion, DDSs offer promising avenues for treating cancer complications, offering the potential for the development of more effective and safer drug delivery strategies, thereby improving the quality of life and survival rates of cancer patients.

The presence of pleural effusion is an independent prognostic factor in patients with malignant pleural mesothelioma

Malignant pleural mesothelioma (MPM) is a rare form of thoracic malignancy with a poor prognosis. Pleural effusion (PE) occurs in the majority of patients with MPM; however, its impact on MPM outcomes remains controversial. We searched for eligible patients from the Surveillance, Epidemiology, and End Results (SEER) database, and clinicopathological information and outcomes were collected. Cox proportional hazard regression analyses were utilized to evaluate the association of PE and other factors with overall survival (OS) and cancer-specific survival (CSS) in patients with MPM. A total of 4185 patients were extracted from the SEER database from 2000 to 2021. The median age of the cohort was 73 years, with a predominance of male patients and epithelioid MPM as the main histological subtype. Univariate Cox regression revealed associations between PE, age, sex, marital status, histology, stage, and treatment with both OS and CSS. Besides, multivariate analyses indicated that PE was independently associated with poorer OS and CSS in patients with MPM, regardless of age, sex, histology, stage, and treatment. Subgroup analyses suggested that PE has a remarkable impact on patients undergoing surgery. PE might serve as an independent prognostic factor in patients with MPM, especially in surgery recipients. Consequently, the development of pleural effusion in these patients should receive increased attention. Future studies are needed to validate these findings, particularly concerning the effect of PE in other clinical settings, such as immunotherapy.

Bedside to bench and back again-translational research in interventional pulmonology

PURPOSE OF REVIEW

Translational research in Interventional Pulmonology has made significant advances in recent years, ranging from novel biomarkers and imaging to practice-changing clinical trials in lung cancer and pleural disease. This review article aims to summarize key research studies in the field to understand the latest published evidence and to highlight areas of growing academic interest.

RECENT FINDINGS

In lung cancer, the role of novel imaging and biomarkers and their potential utility in early lung cancer diagnosis will be highlighted. In pleural disease, less invasive/conservative treatment in pneumothorax, early aggressive treatment in pleural infection along with novel biomarkers, and the shift beyond drainage strategies in malignant pleural effusion and mesothelioma will be discussed.

SUMMARY

This overview of translational research in the field of interventional pulmonology will ultimately help to highlight the gaps in current evidence to promote research in areas of clinical significance.

A potential target for the future treatment of malignant pleural effusion: Monocyte chemoattractant protein-1 (MCP-1)

Background and Aim: Malignant pleural effusion (MPE) is a common clinical problem. Management options are mainly pleurodesis and drainage, and have remained unchanged for years. Novel therapies that target the molecules responsible for fluid formation are needed to reduce the need for invasive procedures. The aim of this study is to investigate the potential role of MCP-1 in the development of MPE in patients with metastatic pleural malignancies. Methods: Pleural effusion samples (8-10 ml) were collected from 100 patients who were divided into three groups: Group 1 (MPE, n = 56), Group 2 (benign exudate, n = 27) and Group 3 (transudate, n = 17). The collected effusions were promptly centrifuged at 4°C, and the supernatants were stored at -80°C. MCP-1 levels were determined by ELISA kit (USCN, Wuhan). Results: Median MCP-1 levels were found to be significantly different between the three groups (Group 1: 1303 pg/ml, Group 2: 926 pg/ml, Group 3: 211 pg/ml) (p < 0.001). MCP-1 levels were markedly higher but similar in Group 1 and Group 2, as compared to Group 3. When patients from Group 1 and Group 2 were combined, a positive correlation was observed between pleural fluid MCP-1 and LDH levels (r = 0.38; p = 0.001). Additionally, MCP-1 levels were observed to increase significantly as the volume of pleural fluid increased (p = 0.007). Conclusion: MCP-1 levels were found to be similarly high in both Group 1 (MPE) and Group 2 (Benign exudate), indicating that inflammation accompanying the tumor could play a role in the formation of pleural effusion. This suggests that the development of biological therapies targeting MCP-1 could be a promising approach in the future management of MPE.

American Association of Bronchology and Interventional Pulmonology Essential Knowledge in Interventional Pulmonology Series: Selected Topics in Malignant Pleural Disease

The goal of the American Association of Bronchology and Interventional Pulmonology Essential Knowledge in Interventional Pulmonology Series is to provide clinicians with concise, up-to-date reviews of important topics in the field of interventional pulmonology. This 3-year alternating rotation of primary topics will start with a focus on selected topics in malignant pleural disease. In this article, we update the reader on malignant pleural effusion in 3 parts: part 1-diagnosis, focusing on imaging and fluid biomarkers; part 2-management, with review of multimodal approaches, cost considerations, and evolving targeted therapies; and part 3-pleural mesothelioma. These reviews complement the Essential Knowledge in Interventional Pulmonology Lecture Series presented at the 2023 AABIP Annual Conference, available for viewing on the AABIP website (https://aabip.memberclicks.net/essential-knowledge-in-interventional-pulmonology-series).

Predictors for spontaneous pleurodesis in patients with indwelling pleural catheters for malignant pleural effusion: a safety net hospital experience

BACKGROUND

Malignant pleural effusion (MPE) affects approximately 150,000 patients in the United States each year and usually signifies advanced-stage cancer. The optimal treatment remains a challenge but indwelling pleural catheters (IPC) offer several advantages and may help achieve spontaneous pleurodesis (SP) in some patients.

OBJECTIVES

We aim to investigate the predictors of SP among patients with MPE, particularly in a resource-limited community-based safety net hospital.

DESIGN

This is a retrospective cohort study done at a community-based safety net hospital.

METHODS

Adults diagnosed with or suspected of having MPE between January 2015 and December 2023 who underwent IPC placement were included. Data was collected retrospectively from December 2023 to June 2024. Data encompassed demographics, imaging, post-procedural complications, pleural fluid analysis, oncology treatment history, and utilization of medical thoracoscopy without chemical pleurodesis (MTWCP) for diagnosis.

RESULTS

A total of 173 patients underwent IPC insertion. Most of our patients were women (64.2%), and Latin American (65.9%), with a mean age of 55.3 years. The most common type of primary cancer was breast (28.9%) followed by lung (23.1%) and lymphoma (6.9%). Pleural fluid characteristics such as glucose, eosinophils, Lactate Dehydrogenase (LDH), and protein concentration were not significantly associated with SP. Most patients had low Eastern Cooperative Oncology Group scores of 0-2 (64.6%) and low LENT (Lactate Dehydrogenase (L), Eastern Cooperative Oncology Group (E) Performance Score, Neutrophil-to-Lymphocyte Ratio (N), and Tumor type (T) score) scores of 0-4 (59%). Lower scores (better functional status) were significantly associated with SP. Post-IPC chemotherapy and/or radiotherapy and immunotherapy were significantly associated with SP, adjusted odds ratio (OR) 7.295 (95% CI: 3.05-17.4, p = 0.001) and adjusted OR 6.261 (95% CI: 2.73-14.36, p = 0.001) respectively. MTWCP was also a predictor of SP with an adjusted OR of 4.031 (95% CI: 1.452-11.19, p = 0.007).

CONCLUSION

Our study is the first to assess predictors of SP in a resource-limited safety net hospital representing under-represented and underserved patients. We identify several factors associated with higher rates of SP such as higher functional status, MTWCP, chemotherapy, immunotherapy, and radiation post-IPC placement. The study findings can help clinicians consider IPC placement and guide them regarding the duration and possible complications of IPC. MTWCP appears to improve the success of SP. Further studies are needed to assess these findings further.

Characterizing Risk Factors Associated With Recurrent Pleural Effusions in the Lung Transplant Recipients

BACKGROUND

Pleural effusions remain a common postoperative complication following lung transplantation, occurring in 10% to 26% of cases. We aimed to explore potential clinical or radiographic features associated with clinically significant post-lung transplant pleural effusions requiring repeat interventions for their management.

METHODS

Lung transplantation recipients who underwent thoracentesis at our institution between June 2012 and October 2022 were reviewed. In total, 77 patients were included. Data were collected via the electronic health record and adjudicated through direct chart review. Patients were stratified by the need for a single thoracentesis (control group) or additional interventions, including serial thoracentesis, pigtail placement, and surgery (composite group). The computed tomography (CT) of the chest before the first thoracentesis was reviewed by a thoracic radiologist who was blinded to patient outcome.

RESULTS

Single thoracentesis was used to manage 25 (32.5%) patients, 4 (5.2%) required multiple thoracenteses, 42 (54.5%) required a pigtail catheter, and 6 (7.8%) required decortication for definitive management. In the composite group compared with the control group, who were managed by a single thoracentesis, there was an increased incidence of loculations (36.8% vs. 8%, P=0.01), rounded atelectasis (22.8% vs. 4%, P=0.05), and larger effusion size (P=0.01). The composite group had higher pleural fluid eosinophils (0.33% vs. 0% in control, P = <0.01) and monocytes (14.8% vs. 7.3%, P=0.04) levels.

CONCLUSION

Baseline imaging, such as larger effusion size, loculations and rounded atelectasis, and pleural fluid cell profile with increased eosinophils and monocytes, can potentially identify clinically significant and refractory pleural effusions.

What You Need to Know About: The Management of Malignant Pleural Effusion

Malignant pleural effusion (MPE) is a common complication of malignancy and is regularly seen on the general medicine take. Diagnosis of MPE is indicative of advanced or metastatic disease and carries a poor prognosis, with median survival ranging from 3 to 12 months. Despite recent advancements in systemic anti-cancer treatment, the goal of management in MPE remains the palliation of symptoms. This article reviews the current guidelines and evidence on the assessment and management of MPE. Assessment involves imaging techniques such chest X-ray and computed tomography (CT) scans, whilst thoracic ultrasound has a crucial role in guiding diagnostic procedures. Diagnostic pleural aspiration remains a cornerstone for establishing a tissue diagnosis, although its yield is variable depending on tumour type. Emergence of targeted immunotherapy has necessitated the need for large tissue samples for molecular testing, driving the need for pleural biopsies in relevant cases. Management encompasses therapeutic aspiration, chemical pleurodesis and indwelling pleural catheter insertion, each offering distinct benefits and considerations. Recent developments in equipment and combined approaches have enhanced patient outcomes and quality of life. The complexity of MPE requires a patient-centred approach to assessment and management and where possible patients should be managed with specialists in pleural disease on an outpatient basis.

Current Trends in Treating Malignant Pleural Effusion: Evidence, Guidelines, and Best Practice Recommendations

Malignant pleural effusion (MPE) is common in individuals with cancer and typically reflects advanced disease. Most cases are symptomatic, with dyspnea and pain having a severe effect on the patient's quality of life (QOL). The management of MPE aims to relieve symptoms, improve QOL, prevent repeated pleural interventions, and minimize hospital admissions. Common treatments for MPE that provide symptomatic relief include thoracentesis, chemical (talc) pleurodesis, or indwelling pleural catheters (IPCs). Talc pleurodesis and IPCs are the mainstay of treatment but represent very different treatment strategies: talc pleurodesis is an inpatient procedure, whereas IPCs are an ambulatory strategy. Given their similar efficacy, treatment decisions in MPE are often determined by other factors, such as the patient's clinical characteristics, individual treatment goals, and preferences for hospital-based or home-based care. We provide a summary of the evidence for different interventions for treating MPE and compare recommendations from the major American, European, British, and Spanish guidelines regarding when to consider each treatment. We highlight specific challenging treatment scenarios and key clinical considerations that may influence treatment decisions for different patients. There are barriers to accessing and receiving evidence-based care. Patients with symptomatic MPE would benefit from early referral from oncology teams to pleural services. We provide best practice recommendations for optimal referral and coordination of care to ensure that patients receive maximum benefits from their interventions.

Mortality after treatment of malignant pleural effusions with indwelling pleural catheters versus chemical pleurodesis: a population-based study

BACKGROUND

Little is known about patient outcomes following treatment of malignant pleural effusions (MPE) in the real-world setting.

RESEARCH QUESTION

We aimed to compare post-procedure all-cause mortality between individuals who received indwelling pleural catheter (IPC) insertion versus chemical pleurodesis for managing MPEs.

STUDY DESIGN AND METHODS

We performed a retrospective population-based study using provincial health administrative data (Ontario, Canada) of adults with a MPE who underwent IPC insertion or chemical pleurodesis between 2015 and 2019. Individuals were followed until death or March 31, 2021. Difference in post-procedure mortality was calculated using inverse probability of treatment weighting (IPTW)-adjusted Cox proportional hazard regression analysis to balance potential confounders at baseline.

RESULTS

We identified 4,790 (77.3%) individuals who received an IPC and 1,407 (22.7%) who had chemical pleurodesis for MPE. IPC insertions are increasing and chemical pleurodesis procedures are decreasing. The majority of IPCs were inserted in outpatients (61%), by pulmonologists (64.2%) and at sites with higher annual IPC volume, while chemical pleurodesis procedures were generally done by thoracic surgeons (74%) and at sites with higher annual pleurodesis volumes. In unadjusted comparison median time from initial cancer diagnosis to intervention was significantly longer in the IPC group (244 days, interquartile range [IQR]:33-903) compared to pleurodesis group (81 days, IQR:10-737; p < 0.0001). Unadjusted median time from index procedure to death was significantly longer in the pleurodesis group (165[IQR:48-457] days vs. 81[IQR:29-256] days, p < 0.0001), however the difference between groups became insignificant after the IPTW was applied (HR 1.27, 95%CI 0.95-1.69). 35% of IPCs were removed prior to death or end of follow-up.

INTERPRETATION

After adjusting for differences in baseline characteristics there was no difference in post-procedure mortality between IPC and chemical pleurodesis groups. In the real world, there are significant differences in the characteristics of patients who receive these two procedures and notable regional practice variation between procedure use. Future research should evaluate these variations in care and their effect on patient outcomes.

Malignant Pleural Effusion: Diagnosis and Treatment-Up-to-Date Perspective

Malignant pleural effusion is the presence of malignant cells within the pleural fluid, representing the second most common cause of pleural exudate. Although diagnostic methods and management techniques for malignant pleural effusion have dramatically improved over the decades, the current treatment is still palliative, aiming to remove pleural fluid, possibly prevent its recurrence, and alleviate symptoms through a wide range of available procedures. Treatment should be tailored to the individual patient, considering comorbidities, size of the effusion, rate of fluid accumulation, underlying cardiac or respiratory conditions, rate of recurrence, presence of loculations or trapped lung, tumor characteristics, cancer type, and patient preferences. This manuscript aims to review the available literature and to present the latest evidence on malignant pleural effusion management in order to provide an updated perspective on its diagnosis and treatment.

Pro: indwelling pleural catheters cause harm to patients

Malignant pleural effusions (MPE) tend to recur and require definitive treatment with either chest drain and talc pleurodesis or indwelling pleural catheters (IPCs), which offer similar symptomatic benefits. In recent years, IPCs have become popular due to the presumed convenience of an outpatient procedure followed by home drainage leading to a misconception of IPCs being an ideal treatment for MPE. However, IPCs predispose the patient to multiple complications and have significant physical and psychological implications that are under-recognised. Patients require additional clinical reviews, hospital admissions and treatment for these complications related to IPCs. Additionally, there is a huge psychological impact of living with a home catheter that is a constant reminder of their cancer and this has been shown to affect quality of life negatively. Hence, IPCs should not be considered the "ideal" treatment for MPE management and clinicians should reflect the equipoise of the evidence for the benefits and accurately reflect the adverse effects of IPCs in their discussions with patients to facilitate informed decision making.

The Clinical and Economic Implications of Different Treatment Pathways for Patients With Rapidly Recurrent Malignant Pleural Effusion

BACKGROUND

Malignant pleural effusion (MPE) is a common cancer complication. Clinical and economic implications of different recurrent MPE treatment pathways have not been evaluated fully.

RESEARCH QUESTION

What clinical outcomes, complications, health care resource use, and costs are associated with various rapidly recurrent MPE treatment pathways?

STUDY DESIGN AND METHODS

This retrospective cohort study using Surveillance, Epidemiology and End Results Medicare data (2011-2015) included patients 66 to 90 years of age with rapidly recurrent MPE. Rapid recurrence was defined as receipt of a second pleural procedure within 14 days of the first thoracentesis, including nondefinitive repeated thoracentesis or a definitive treatment option including chest tube, indwelling pleural catheter (IPC), or thoracoscopy.

RESULTS

Among 8,378 patients with MPE, 3,090 patients (36.9%) had rapidly recurrent MPE (mean ± SD age, 75.9 ± 6.6 years; 45.6% male; primary cancer, 62.9% lung and 37.1% other). Second pleural procedures were nondefinitive thoracentesis (62.3%), chest tube (17.1%), IPC (13.2%), or thoracoscopy (7.4%). A third pleural procedure was required more frequently if the second pleural procedure was nondefinitive thoracentesis vs chest tube placement, IPC placement, or thoracoscopy (70.3% vs 44.1% vs 17.9% vs 14.4%, respectively). The mean number of subsequent pleural procedures over the patient's lifetime varied significantly among the procedures (1.74, 0.82, 0.31, and 0.22 procedures for patients receiving thoracentesis, chest tube, IPC, and thoracoscopy, respectively; P < .05). Average total costs after the second pleural procedure to death adjusted for age at primary cancer diagnosis, race, year of second pleural procedure, Charlson comorbidity index, cancer stage at primary diagnosis, and time from primary cancer diagnosis to diagnostic thoracentesis were lower with IPC ($37,443; P < .0001) or chest tube placement ($40,627; P = .004) vs thoracentesis ($47,711). Patients receiving thoracoscopy ($45,386; P = .5) incurred similar costs as patients receiving thoracentesis.

INTERPRETATION

Early definitive treatment was associated with fewer subsequent procedures and lower costs in patients with rapidly recurrent MPE.

Con: indwelling pleural catheters cause harm to patients

Indwelling pleural catheters (IPCs) have rapidly grown in popularity since their introduction for the management of recurrent pleural effusions. In malignant pleural effusions especially, there has been a shift away from measuring pleurodesis success and towards more patient-centred outcomes. Multiple randomised controlled trials have shown that despite lower rates of pleurodesis, symptom control and quality of life outcomes are comparable when compared to alternatives such as talc pleurodesis. IPCs have the added benefit of minimising inpatient hospital stays and reducing the need for recurrent pleural interventions, key priorities for patients with palliative disease. As a result, IPC treatment is associated with excellent patient satisfaction coupled with acceptably low complication rates. Furthermore, in patients with a short life expectancy they confer a cost benefit for the healthcare system. Far from causing harm, IPCs are now recommended as first-line treatment by current clinical guidelines. In malignant pleural disease, guidance advocates IPCs should be offered as a first-line option with the focus on patient priorities and preferences. Ultimately IPCs provide a safe, effective, ambulatory option for managing recurrent pleural effusions.

The effect of pleural drainage on pulse oximetry in a post-operative thoracic surgery population

BACKGROUND

Pleural effusions in post-operative thoracic surgery patients are common. Effusions can result in prolonged hospitalizations or readmissions, with prior studies suggesting mixed effects of pleural drainage on hypoxia. We aimed to define the impact of pleural drainage on pulse oximetry (SpO2) in post-thoracic surgery patients.

METHODS

A retrospective study of post-operative thoracic surgery patients undergoing pleural drainage was performed. SpO2 and supplemental oxygen (FiO2) values were recorded at pre- and post-procedure. The primary outcome was difference in pre-procedural and post-procedural SpO2.

RESULTS

We identified 95 patients with a mean age of 65 (SD - 13.8) years undergoing 122 pleural drainage procedures. Mean drainage volume was 619 (SD-423) mL and the majority of procedures (88.5 %) included a drainage of <1000 mL. SpO2 was associated with an increase from 94.0 % (SD-2.6) to 97.3 % (SD-2.0) at 24-h (p < 0.0001). FiO2 was associated with a decrease from 0.31 (SD-0.15) to 0.29 (SD-0.12) at 24-h (p = 0.0081). SpO2/FiO2 was associated with an increase from 344.5 (SD-99.0) to 371.9 (SD-94.7) at 24-h post-procedure (p < 0.0001).

CONCLUSIONS

Pleural drainage within post-operative thoracic surgery patients offers statistically significant improvements in oxygen saturation by peripheral pulse oximetry and oxygen supplementation; however the clinical significance of these changes remains unclear. Pleural drainage itself may be requested for numerous reasons, including diagnostic (fevers, leukocytosis, etc.) or therapeutic (worsening dyspnea) evaluation. However, pleural drainage may offer minimal clinical impact on pulse oximetry in post-operative thoracic surgery patients.

Rehabilitation for Functioning and Quality of Life in Patients with Malignant Pleural Mesothelioma: A Scoping Review

Malignant pleural mesothelioma (MPM) represents a significant clinical challenge due to limited therapeutic options and poor prognosis. Beyond mere survivorship, setting up an effective framework to improve functioning and quality of life is an urgent need in the comprehensive management of MPM patients. Therefore, this study aims to review the current understanding of MPM sequelae and the effectiveness of rehabilitative interventions in the holistic approach to MPM. A narrative review was conducted to summarize MPM sequelae and their impact on functioning, disability, and quality of life, focusing on rehabilitation interventions in MPM management and highlighting gaps in knowledge and areas for further investigation. Our findings showed that MPM patients experience debilitating symptoms, including fatigue, dyspnea, pain, and reduced exercise tolerance, decreasing quality of life. Supportive and rehabilitative interventions, including pulmonary rehabilitation, physical exercise improvement, psychological support, pain management, and nutritional supplementation, seem promising approaches in relieving symptoms and improving quality of life but require further research. These programs emphasize the pivotal synergy among patient-tailored plans, multidisciplinary team involvement, and disease-specific focus. Despite advancements in therapeutic management, MPM remains a challenging disease with limited effective interventions that should be adapted to disease progressions. Rehabilitative strategies are essential to mitigate symptoms and improve the quality of life in MPM patients. Further research is needed to establish evidence-based guidelines for rehabilitative interventions tailored to the unique needs of MPM patients.

Management of malignant pleural effusion and trapped lung: a survey of respiratory physicians and thoracic surgeons in Australasia

BACKGROUND

Malignant pleural effusions (MPEs) are common, and a third of them have underlying trapped lung (TL). Management of MPE and TL is suspected to be heterogeneous. Understanding current practices in Australasia is important in guiding policies and future research.

AIMS

Electronic survey of Australia-New Zealand respiratory physicians, thoracic surgeons and their respective trainees to determine practice of MPE and TL management.

RESULTS

Of the 132 respondents, 56% were respiratory physicians, 23% were surgeons and 20% were trainees. Many respondents defined TL as >25% or any level of incomplete lung expansion; 75% would use large-volume thoracentesis to determine whether TL was present. For patients with TL, indwelling pleural catheters (IPCs) were the preferred treatment irrespective of prognosis. In those without TL, surgical pleurodesis was the most common choice if prognosis was >6 months, whereas IPC was the preferred option if survival was <3 months. Only 5% of respondents considered decortication having a definite role in TL, but 55% would consider it in select cases. Forty-nine per cent of surgeons would not perform decortication when the lung does not fully expand intra-operatively. Perceived advantages of IPCs were minimisation of hospital time, effusion re-intervention and usefulness irrespective of TL status. Perceived disadvantages of IPCs were lack of suitable drainage care, potentially indefinite duration of catheter-in-situ and catheter complications.

CONCLUSION

This survey highlights the lack of definition of TL and heterogeneity of MPE management in Australasia, especially for patients with expandable lungs. This survey also identified the main hurdles of IPC use that should be targeted.

Patient-Reported Outcome Measures in Patients with and without Non-Expandable Lung Secondary to Malignant Pleural Effusion-A Single-Centre Observational Study

BACKGROUND

Malignant pleural effusion (MPE) affects up to 15% of patients with malignancy, and the prevalence is increasing. Non-expandable lung (NEL) complicates MPE in up to 30% of cases. However, it is not known if patients with malignant pleural effusion and NEL are more symptomatic in activities of daily living compared to patients with MPE with expandable lung.

METHODS

This was an observational study on consecutively recruited patients with MPE from our pleural clinic. Before thoracentesis, patients completed patient-reported outcomes on cancer symptoms (ESAS), health-related quality of life (5Q-5D-5L), and dyspnoea scores. Following thoracentesis, patients scored dyspnoea relief and symptoms during thoracentesis. Data on focused lung ultrasound and pleural effusion biochemistry were collected. The non-expandable lung diagnosis was made by pleural experts based on radiological and clinical information.

RESULTS

We recruited 43 patients, including 12 with NEL (28%). The NEL cohort resembled those from previous studies concerning ultrasonography, pleural fluid biochemistry, and fewer cases with high volume thoracentesis. Patients with and without NEL were comparable concerning baseline demography. The 5Q-5D-5L utility scores were 0.836 (0.691-0.906) and 0.806 (0.409-0.866), respectively, for patients with and without NEL. We observed no between-group differences in symptom burden or health-related quality of life.

CONCLUSION

While the presence of NEL affects the clinical management of recurrent MPE, the presence of NEL seems not to affect patients' overall symptom burden in patients with MPE.

[Management of Malignant Pleural Effusion]

Malignant pleural effusion is a common diagnosis in metastasized cancers. It is always of palliative character. Main symptoms are dyspnoea and reduced quality of life. Diagnosis is made by ultrasound-guided puncture of the pleural effusion (cytology) and often video-assisted thoracic surgery with biopsy of the pleural surface (histology). The goal of treatment is a fast, sustainable, minimally invasive, patient-centred therapy that increases quality of life. Besides systemic therapy and best supportive care the patient can be treated with local therapy including either pleurodesis (via drainage or VATS) or an indwelling-pleural catheter (IPC). Decision for one of these procedures is made upon performance index (ECOG), expandability of the lung, prognosis and the patient's wish. For the first technique, the lung must be expandable. The latter one (IPC) can be implanted both with expandable and trapped lung. Both are similarly effective in symptom control.

The third PLeuralEffusion And Symptom Evaluation (PLEASE-3) study: Bendopnoea in patients with pleural effusion

Background

Pleural effusions often cause disabling breathlessness, however the mechanism is unknown. Patients with pleural effusions are subjected to pleural fluid drainage on a 'trial and error' basis, as symptom relief varies. This population commonly complain of bendopnoea (breathlessness on bending forward) which has not been investigated. Our pilot data found bendopnoea was significantly associated with presence of pleural effusion. The PLEASE-3 study will evaluate bendopnoea as a screening test for effusion-related breathlessness, its predictive value of symptomatic benefits from fluid drainage and explore its underlying physiological mechanism.

Methods

PLEASE-3 is a multi-centre prospective study. Eligible patients are assessed at baseline (pre-drainage) and for patients undergoing drainage, up to 72 h post-procedure. Outcome measures include the prevalence of bendopnoea, its correlation with size of effusion and its predictive value of breathlessness relief after drainage. The relationship of bendopnoea with breathlessness, physiological parameters, functional capacity and diaphragmatic characteristics will be assessed. The study will recruit 200 participants.

Discussion

This is the first study to investigate bendopnoea in patients with pleural effusion. It has minimal exclusion criteria to ensure that the results are generalisable. The presence and clinical significance of bendopnoea in the context of pleural effusion requires thorough investigation. The post assessment of patients undergoing pleural fluid drainage will provide insight into whether the presence of bendopnoea is able to predict clinical outcomes.

Trial Registration

Name of the registry: Australia New Zealand Clinical Trial Registry Trial registration number: ACTRN12622000465752. URL of the trial registry record for this trial: https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=383639&isReview=true Date of registration: Registered on 24 March 2022. Funding of the trial: This study has received funding from the Sir Charles Gairdner Research Advisory Council research project grant. The study is sponsored by the Institute for Respiratory Health, a not-for-profit organisation. Name and contact information for the trial sponsor: Mr Bi Lam; Finance manager. Level 2, 6 Verdun Street, Nedlands WA 6009. t‖ + 61 8 6151 0877 e‖ bi.lam@resphealth.uwa.edu.au Role of sponsor : The funder is not involved in the planning of the study, gathering, analysing, and interpreting the data, or in preparing the manuscript.

Exploring the efficacy and advancements of medical pleurodesis: a comprehensive review of current research

This narrative review aims to provide an overview of medical pleurodesis techniques, and their indications and potential adverse effects. Pleurodesis is a procedure performed with the aim of obliterating the pleural space. It has indications in the management of both malignant and benign pleural effusions and pneumothorax. Various nonsurgical techniques exist to perform pleurodesis. The scope of this work is to review the different nonsurgical techniques and their indications. This narrative review was performed checking scientific databases for medical literature, focusing especially on the data derived from randomised controlled trials. Pleurodesis is an effective method to manage pleural effusions and pneumothorax, and minimally invasive techniques are now frequently used with good results. Further research is needed to assess the efficacy of new treatments and the possibility of using different techniques in association.

Leveraging the pleural space for anticancer therapies in pleural mesothelioma

Most patients with pleural mesothelioma (PM) present with symptomatic pleural effusion. In some patients, PM is only detectable on the pleural surfaces, providing a strong rationale for intrapleural anticancer therapy. In modern prospective studies involving expert radiological staging and specialist multidisciplinary teams, the population incidence of stage I PM (an approximate surrogate of pleura-only PM) is higher than in historical retrospective series. In this Viewpoint, we advocate for the expansion of intrapleural trials to serve these patients, given the paucity of data supporting licensed systemic therapies in this setting and the uncertainties involved in surgical therapy. We begin by reviewing the unique anatomical and physiological features of the PM-bearing pleural space, before critically appraising the evidence for systemic therapies in stage I PM and previous intrapleural PM trials. We conclude with a summary of key challenges and potential solutions, including optimal trial designs, repurposing of indwelling pleural catheters, and new technologies.

Resource Use and Costs of Indwelling Pleural Catheters versus Pleurodesis for Malignant Pleural Effusions: A Population-based Study

Rationale: Malignant pleural effusions (MPEs) are associated with significant health service use and healthcare costs, but the current evidence is limited. Objectives: To compare 12-month post-procedure: 1) health service utilization; and 2) healthcare costs after indwelling pleural catheter (IPC) insertion with at-home drainage performed by home care nursing services, versus in-hospital chemical pleurodesis. Methods: We performed a retrospective population-based study on a cohort of adults with MPEs who underwent IPC insertion or chemical pleurodesis between January 1, 2015 and December 31, 2019 using provincial health administrative data (Ontario, Canada). Patients were followed from the procedure date until death or until 12 months after the procedure. Inverse probability of treatment weighting was performed to adjust for imbalances in baseline characteristics. Differences in length of stay, readmissions, emergency department visits, home care visits, and healthcare costs were estimated using weighted regression analysis. Results: Of 5,752 included individuals, 4,432 (77%) underwent IPC insertion and 1,320 (23%) had pleurodesis. In the weighted sample, individuals who received an IPC had fewer inpatient days (12.4 d vs. 16 d; standardized mean difference, 0.229) but a higher proportion of subsequent admissions for empyema (2.7% vs. 1.1%; P = 0.0002) than those undergoing pleurodesis. Individuals with IPCs received more hours of nursing home care (41 h vs. 21.1 h; standardized mean difference, 0.671) but overall had lower average healthcare costs ($40,179 vs. $46,640 per patient; standardized mean difference, 0.177) than those receiving pleurodesis. Conclusions: IPCs with home nursing drainage are associated with reduced health resource use compared with pleurodesis in adults with MPEs, even after controlling for important baseline and clinical characteristics. Given that both procedures have similar health outcomes, our findings support the ongoing promotion of IPCs to increase outpatient management of patients with MPEs.

Contemporary management of mesothelioma

Pleural mesothelioma (PM) is an aggressive asbestos-associated thoracic malignancy with a median survival of 12-18 months. Due to continued asbestos use in many nations, global incidence is rising. Causes due to non-occupational, environmental exposure are also rising in many countries despite utilisation bans. For many years, platinum--pemetrexed chemotherapy was the solitary licensed therapy, but first-line combination immune checkpoint blockade has recently demonstrated improved outcomes, with both regimes tested in predominantly late-stage cohorts. In the second-line setting, single-agent nivolumab has been shown to extend survival and is now available for routine use in some regions, while second-line chemotherapy has no proven role and opportunities for clinical trials should be maximised in relapsed disease. Surgery for "technically resectable" disease has been offered for decades in many expert centres, but the recent results from the phase III MARS2 trial have challenged this approach. There remains no robustly proven standard of care for early-stage PM. The clinical trial landscape for PM is complex and increasingly diverse, making further development of specialist PM multidisciplinary teams an important priority in all countries. The observation of improving outcomes in centres that have adopted this service model emphasises the importance of high-quality diagnostics and equitable access to therapies and trials. Novel therapies targeting a range of aberrations are being evaluated; however, a better understanding of the molecular drivers and their associated vulnerabilities is required to identify and prioritise treatment targets.

Validating LENT score in malignant pleural effusion

Aim: LENT score was developed to predict survival in malignant pleural effusion (MPE), this study aims to validate this score. Objectives: Validate LENT Prognostic Score for MPE and explore survival in these patients. Methods: Retrospective analysis of 202 patients who had MPE and received drainage between January 2013 and June 2015. Results: Median survival was 2.98 months. Patients were classified according to LENT score as low, moderate and high-risk groups: 5 (4.2%), 61 (50.8%), and 54 (45%), respectively. Kaplan-Meier curve showed median survival for each group: 9.41, 5.36 and 0.56 months, respectively, p-values <0.001. AUC for 1, 3 and 6 months: 0.741, 0.781, 0.790, respectively, p-values <0.001. Conclusion: LENT score is valid for predicting survival in patients with MPE.

Australasian Malignant PLeural Effusion (AMPLE)-4 trial: study protocol for a multi-centre randomised trial of topical antibiotics prophylaxis for infections of indwelling pleural catheters

BACKGROUND

Malignant pleural effusion (MPE) is a debilitating condition as it commonly causes disabling breathlessness and impairs quality of life (QoL). Indwelling pleural catheter (IPC) offers an effective alternative for the management of MPE. However, IPC-related infections remain a significant concern and there are currently no long-term strategies for their prevention. The Australasian Malignant PLeural Effusion (AMPLE)-4 trial is a multicentre randomised trial that evaluates the use of topical mupirocin prophylaxis (vs no mupirocin) to reduce catheter-related infections in patients with MPE treated with an IPC.

METHODS

A pragmatic, multi-centre, open-labelled, randomised trial. Eligible patients with MPE and an IPC will be randomised 1:1 to either regular topical mupirocin prophylaxis or no mupirocin (standard care). For the interventional arm, topical mupirocin will be applied around the IPC exit-site after each drainage, at least twice weekly. Weekly follow-up via phone calls or in person will be conducted for up to 6 months. The primary outcome is the percentage of patients who develop an IPC-related (pleural, skin, or tract) infection between the time of catheter insertion and end of follow-up period. Secondary outcomes include analyses of infection (types and episodes), hospitalisation days, health economics, adverse events, and survival. Subject to interim analyses, the trial will recruit up to 418 participants.

DISCUSSION

Results from this trial will determine the efficacy of mupirocin prophylaxis in patients who require IPC for MPE. It will provide data on infection rates, microbiology, and potentially infection pathways associated with IPC-related infections.

ETHICS AND DISSEMINATION

Sir Charles Gairdner and Osborne Park Health Care Group Human Research Ethics Committee has approved the study (RGS0000005920). Results will be published in peer-reviewed journals and presented at scientific conferences.

TRIAL REGISTRATION

Australia New Zealand Clinical Trial Registry ACTRN12623000253606. Registered on 9 March 2023.

Pleural disease

The incidence of pleural disease is increasing and the mortality and morbidity is high. Many recent RCTs have resulted in evidence-based guidelines published in 2023, pointing towards a more individualized and specialized management. Most patients with pleural disease are admitted at the A and E but can be managed in outpatient clinics. Thus, there is a need to establish specialized, multidisciplinary pleural clinics to ensure optimal, individualized and evidence-based management of the increasing number of patients with pleural disease in Denmark, as argued in this review.

Usefulness of thoracic ultrasound in the assessment of removal of indwelling pleural catheter in patients with malignant pleural effusion

INTRODUCTION

There are no defined criteria for deciding to remove a non-functioning indwelling pleural catheter (IPC) when lung re-expansion on chest X-ray is incomplete. Chest computed tomography (chest CT) is usually used. The objective of this work is to validate the usefulness of chest ultrasound performed by a pulmonologist and by a radiologist compared to chest CT.

PATIENTS AND METHODS

Prospective, descriptive, multidisciplinary and multicenter study including patients with malignant pleural effusion and non-functioning IPC without lung reexpansion. Decisions made on the basis of chest ultrasound performed by a pulmonologist, and performed by a radiologist, were compared with chest CT as the gold standard.

RESULTS

18 patients were analyzed, all of them underwent ultrasound by a pulmonologist and chest CT and in 11 of them also ultrasound by a radiologist. The ultrasound performed by the pulmonologist presents a sensitivity of 60%, specificity of 100%, PPV 100% and NPV 66% in the decision of the correct removal of the IPC. The concordance of both ultrasounds (pulmonologist and radiologist) was 100%, with a kappa index of 1. The 4 discordant cases were those in which the IPC was not located on the ultrasound.

CONCLUSIONS

Thoracic ultrasound performed by an expert pulmonologist is a valid and simple tool to determine spontaneous pleurodesis and remove a non-functioning IPC, which would make it possible to avoid chest CT in those cases in which lung reexpansion is observed with ultrasonography.

Topical antibiotics prophylaxis for infections of indwelling pleural/peritoneal catheters (TAP-IPC): A pilot study

BACKGROUND AND OBJECTIVE

Indwelling pleural catheter (IPC) and indwelling peritoneal catheter (IPeC) have established roles in the management of malignant pleural and peritoneal effusions but catheter-related infections remain a major concern. Topical mupirocin prophylaxis has been shown to reduce peritoneal dialysis catheter infections. This study aimed to assess the (i) compatibility of IPC with mupirocin and (ii) feasibility, tolerability and compliance of topical mupirocin prophylaxis in patients with an IPC or IPeC.

METHODS

(i) Three preparations of mupirocin were applied onto segments of IPC thrice weekly and examined with scanning electron microscope (SEM) at different time intervals. (ii) Consecutive patients fitted with IPC or IPeC were given topical mupirocin prophylaxis to apply to the catheter exit-site following every drainage/dressing change (at least twice weekly) and followed up for 6 months.

RESULTS

(i) No detectable structural catheter damage was found with mupirocin applied for up to 6 months. (ii) Fifty indwelling catheters were inserted in 48 patients for malignant pleural (n = 41) and peritoneal (n = 9) effusions. Median follow-up was 121 [median, IQR 19-181] days. All patients tolerated mupirocin well; one patient reported short-term local tenderness. Compliance was excellent with 95.8% of the 989 scheduled doses delivered. Six patients developed catheter-related pleural (n = 3), concurrent peritoneal/local (n = 1) and skin/tract (n = 2) infections from Streptococcus mitis (with Bacillus species or anaerobes), Staphylococcus aureus, Klebsiella pneumoniae and Pseudomonas aeruginosa.

CONCLUSION

This first study of long-term prevention of IPC- or IPeC-related infections found topical mupirocin prophylaxis feasible and well tolerated. Its efficacy warrants future randomized studies.

The impact of outpatient versus inpatient management on health-related quality of life outcomes for patients with malignant pleural effusion: the OPTIMUM randomised clinical trial

BACKGROUND

The principal aim of malignant pleural effusion (MPE) management is to improve health-related quality of life (HRQoL) and symptoms.

METHODS

In this open-label randomised controlled trial, patients with symptomatic MPE were randomly assigned to either indwelling pleural catheter (IPC) insertion with the option of talc pleurodesis or chest drain and talc pleurodesis. The primary end-point was global health status, measured with the 30-item European Organisation for Research and Treatment of Cancer Quality of Life Core Questionnaire (EORTC QLQ-C30) at 30 days post-intervention. 142 participants were enrolled from July 2015 to December 2019.

RESULTS

Of participants randomly assigned to the IPC (n=70) and chest drain (n=72) groups, primary outcome data were available in 58 and 56 patients, respectively. Global health status improved in both groups at day 30 compared with baseline: IPC (mean difference 13.11; p=0.001) and chest drain (mean difference 10.11; p=0.001). However, there was no significant between-group difference at day 30 (mean intergroup difference in baseline-adjusted global health status 2.06, 95% CI -5.86-9.99; p=0.61), day 60 or day 90. No significant differences were identified between groups in breathlessness and chest pain scores. All chest drain arm patients were admitted (median length of stay 4 days); seven patients in the IPC arm required intervention-related hospitalisation.

CONCLUSIONS

While HRQoL significantly improved in both groups, there were no differences in patient-reported global health status at 30 days. The outpatient pathway using an IPC was not superior to inpatient treatment with a chest drain.

Malignant pleural effusion: current understanding and therapeutic approach

Malignant pleural effusion (MPE) is a common complication of thoracic and extrathoracic malignancies and is associated with high mortality and elevated costs to healthcare systems. Over the last decades the understanding of pathophysiology mechanisms, diagnostic techniques and optimal treatment intervention in MPE have been greatly advanced by recent high-quality research, leading to an ever less invasive diagnostic approach and more personalized management. Despite a number of management options, including talc pleurodesis, indwelling pleural catheters and combinations of the two, treatment for MPE remains symptom directed and centered around drainage strategy. In the next future, because of a better understanding of underlying tumor biology together with more sensitive molecular diagnostic techniques, it is likely that combined diagnostic and therapeutic procedures allowing near total outpatient management of MPE will become popular. This article provides a review of the current advances, new discoveries and future directions in the pathophysiology, diagnosis and management of MPE.

Ultrasound in the Diagnosis of Non-Expandable Lung: A Prospective Observational Study of M-Mode, B-Mode, and 2D-Shear Wave Elastography

BACKGROUND

Non-expandable lung (NEL) has severe implications for patient symptoms and impaired lung function, as well as crucial implications for the management of malignant pleural effusion (MPE). Indwelling pleural catheters have shown good symptom relief for patients with NEL; hence, identifying patients early in their disease is vital. With the inability of the lung to achieve pleural apposition following thoracentesis and the formation of a hydropneumothorax, traditionally, chest X-ray and clinical symptoms have been used to make the diagnosis following thoracentesis. It is our aim to investigate whether ultrasound measurement of lung movement during respiration can predict NEL before thoracentesis, thereby aiding clinicians in their planning for the optimal treatment of affected patients.

METHODS

A total of 49 patients were consecutively included in a single-centre trial performed at a pleural clinic. Patients underwent protocolled ultrasound assessment pre-thoracentesis with measurements of lung and diaphragm movement and shear wave elastography measurements of the pleura and pleural effusion at the planned site of thoracentesis.

RESULTS

M-mode measurements of lung movement provided the best diagnostic ROC-curve results, with an AUC of 0.81. Internal validity showed good results utilising the calibration belt test and Brier test.

CONCLUSION

M-mode measurement of lung movement shows promise in diagnosing NEL before thoracentesis in patients with known or suspected MPE. A validation cohort is needed to confirm the results.

Patient-Reported Outcomes in Pleural Effusions: A Systematic Review

Pleural effusions cause breathlessness, decreased activity levels, and impaired quality of life. Clinical trials of drainage of pleural effusion use patient-reported outcome measures (PROMs) to assess these variables. This systematic review aimed to identify which PROMs have been used in clinical trials in pleural effusions, what variables were assessed, whether they were responsive to pleural interventions, and whether they have been validated in patients with pleural effusions, including a defined minimal clinically important difference (MCID). A systematic review was performed to identify relevant clinical trials from Medline, EMBASE, Emcare, and CINAHL and data were extracted. From 329 abstracts, 29 clinical trials of pleural effusion drainage that used PROMs as an outcome measure were identified. A total of 16 different PROMs were used. The most used PROMs were unidimensional measurements of breathlessness, particularly the visual analogue scale for dyspnoea (VASD), all of which nearly showed improvements in breathlessness following pleural fluid drainage. Other variables commonly assessed included activity levels and health-related quality of life. Multidimensional PROMs showed inconsistent responsiveness to pleural fluid drainage. Only the VASD was validated in this patient group with a defined MCID. A range of PROMs are used in clinical trials of pleural fluid drainage. No single PROM measures all the outcomes of interest. Unidimensional measurements of breathlessness are responsive to pleural fluid drainage. Only the VASD is validated with an MCID. There is a need for properly validated, response PROMs which measure the key outcomes of interest in this patient group.

[Treatment of malignant effusion]

Malignant effusion complicates more than 15% of all cancers in delayed stages of progression. The most common causes of metastatic pleuritis are lung cancer, breast cancer, ovarian cancer, lymphoproliferative diseases or dissemination of gastrointestinal tumors. Malignant effusion is associated with negative prognosis for overall survival regardless of etiology of tumor, significantly complicates the course of the underlying disease, impairs life quality and complicates treatment. Despite various methods for pleural cavity obliteration in recurrent metastatic pleuritis, there is still no a uniform approach to choosing the optimal treatment strategy. We analyzed the main methods of conservative and surgical treatment of recurrent metastatic pleuritic regarding efficacy, risk of recurrence and reproducibility.

Malignant pleural disease

Malignant pleural disease represents a growing healthcare burden. Malignant pleural effusion affects approximately 1 million people globally per year, causes disabling breathlessness and indicates a shortened life expectancy. Timely diagnosis is imperative to relieve symptoms and optimise quality of life, and should give consideration to individual patient factors. This review aims to provide an overview of epidemiology, pathogenesis and suggested diagnostic pathways in malignant pleural disease, to outline management options for malignant pleural effusion and malignant pleural mesothelioma, highlighting the need for a holistic approach, and to discuss potential challenges including non-expandable lung and septated effusions.

A practical approach to the diagnosis and management of malignant pleural effusions in resource-constrained settings

No pleural intervention in a patient with confirmed malignant pleural effusion (MPE) prolongs life, but even the recommended interventions for diagnosis and palliation can be costly and therefore unavailable in large parts of the world. However, there is good evidence to guide clinicians working in low- and middle-income countries on the most cost-effective and clinically effective strategies for the diagnosis and management of MPE. Transthoracic ultrasound-guided closed pleural biopsy is a safe method of pleural biopsy with a diagnostic yield approaching that of thoracoscopy. With the use of pleural fluid cytology and ultrasound-guided biopsy, ≥90% of cases can be diagnosed. Cases with an associated mass lesion are best suited to an ultrasound-guided fine needle aspiration with/without core needle biopsy. Those with diffuse pleural thickening and/or nodularity should have an Abrams needle (<1 cm thickening) or core needle (≥1 cm thickening) biopsy of the area of interest. Those with insignificant pleural thickening should have an ultrasound-guided Abrams needle biopsy close to the diaphragm. The goals of management are to alleviate dyspnoea, prevent re-accumulation of the pleural effusion and minimise re-admissions to hospital. As the most cost-effective strategy, we suggest early use of indwelling pleural catheters with daily drainage for 14 days, followed by talc pleurodesis if the lung expands. The insertion of an intercostal drain with talc slurry is an alternative strategy which is noninferior to thoracoscopy with talc poudrage.

Educational aims

To provide clinicians practising in resource-constrained settings with a practical evidence-based approach to the diagnosis and management of malignant pleural effusions.To explain how to perform an ultrasound-guided closed pleural biopsy.To explain the cost-effective use of indwelling pleural catheters.

Cost Comparison of Treatment Alternatives for Pleural Effusion and Ascites from a Payer Perspective: Are There Cost Savings from Indwelling Catheters?

Background: The presence of pleural effusions and ascites in patients is often considered a marker of illness severity and a poor prognostic indicator. This study aims to compare inpatient and outpatient costs of alternative invasive treatments for ascites and pleural effusions. Methods: The retrospective single-institution study included inpatient cases treated for pleural effusion (J90 and J91) or ascites (R18) at the University Hospital Cologne (UHC) in Germany between January 01, 2020, and December 31, 2021. Costs for punctures and indwelling catheter systems (ICSs) as well as pleurodesis were analyzed in different comparator treatment pathways. Real-world data from the UHC tertiary care center were based on diagnosis-related group fees from 2020 to 2021. A simulation of outpatient expenses was carried out to compare inpatient and outpatient costs for each pathway from a payer perspective. Results: A total of 4323 cases (3396 pleural effusions and 1302 ascites) were analyzed. For ascites, inpatient implantation with home care drainage was found to be the most expensive option, with total costs of €1,918.58 per procedure, whereas outpatient puncture was the least expensive option at €60.02. For pleural effusions, the most expensive treatment pathway was pleurodesis at €8,867.84 compared with the least costly option of outpatient puncture resulting in total costs per procedure of €70.03. A break-even analysis showed that outpatient puncture remains the most inexpensive treatment option, and the ICS comprises a cost-saving potential. Longevity of several months with the use of ICSs results in both enhanced quality of life for patients and increased cost savings.

Patient perspectives on the use of indwelling pleural catheters in malignant pleural effusions

BACKGROUND

Indwelling pleural catheters are an effective treatment option for patients with malignant pleural effusions. Despite their popularity, there remains a paucity of data on the patient experience and key patient-centred outcomes.

OBJECTIVE

To investigate the experience of patients receiving an indwelling pleural catheter to better inform and identify potential areas for improvement in care.

METHODS

This was a multicentre survey study at three academic, tertiary-care centres in Canada. Patients with a diagnosis of malignant pleural effusion who had an indwelling pleural catheter inserted were included. An adapted questionnaire specific to indwelling pleural catheters was used with responses recorded on a 4-point Likert scale. Patients completed the questionnaire in-person or by phone at 2-week and 3-month follow-up appointments.

RESULTS

A total of 105 patients were enrolled in the study with 84 patients included in the final analysis. At the 2-week follow-up, patient-reported improvements in dyspnoea and quality of life from indwelling pleural catheter were high at 93% and 87%, respectively. The predominant issues identified were discomfort at time of insertion (58%), itching (49%), difficulty with sleeping (39%), discomfort with home drainage (36%) and the pleural catheter reminding patients of their disease (63%). Avoiding hospitalisation for the management of dyspnoea was important to 95% of patients. Findings were similar at 3 months.

CONCLUSIONS

Indwelling pleural catheters are an effective intervention to directly improve dyspnoea and quality of life but have important disadvantages for some; clinicians and patients should be aware of these when making an informed decision regarding treatment.

Therapeutic thoracentesis symptoms and activity: a qualitative study

INTRODUCTION

Malignant pleural effusions (MPEs) commonly occur in patients with advanced cancer. Drainage of fluid is used to relieve symptoms and improve quality of life.

OBJECTIVE

To improve our understanding of how therapeutic aspiration affects symptoms and activities in patients with MPE.

METHODS

Patients presenting to the Pleural Clinic at Norfolk and Norwich University Hospital with a confirmed or suspected MPE participated in up to three semistructured interviews during their diagnostic/therapeutic pathway. Interviews were analysed using framework analysis by two researchers independently.

RESULTS

Sixteen patients participated. Symptoms reported before drainage included breathlessness, cough, chest pain, fatigue and anorexia. Symptoms affected their activities, including walking, bending over and socialisation. Patients described anxiety about the underlying diagnosis and fear of over-reliance on others. Expectations of drainage outcome varied, with some hoping for a cure and others hoping for any improvement. After drainage, breathlessness, chest pain and cough improved in some patients. They reported feeling and sleeping better, but fatigue and poor appetite remained. Participants were more active after aspiration, but the duration of improvement was a few days only. Despite this, patients still felt the procedure worthwhile.

CONCLUSION

Overall health and respiratory symptoms improved following drainage, but constitutional symptoms did not improve. This may be because constitutional symptoms are caused by the underlying cancer. This study suggests that clinicians should consider a range of symptoms, rather than just breathlessness, in planning outcomes for clinical trials. These results are important to inform patients about the potential benefits and duration of symptom improvement after therapeutic aspiration.