Indwelling pleural catheters for malignancy related pleural effusions

Incidence of complications from indwelling pleural catheter for pleural effusion: A meta-analysis

Indwelling pleural catheter (IPC) is widely used in patients with pleural effusion (PE). This meta-analysis aimed to comprehensively summarize the clinical complication from IPC. We searched four large electronic databases (PubMed, EMBASE, MEDLINE, and Cochrane Library) for potentially relevant studies and assessed the included studies' quality using the methodological index for nonrandomized studies' criteria. Extracted data were used to pool rates, and to conduct subgroup and meta-regression analyses. Forty-one studies involving a cumulative 4983 patients with 5650 IPCs were included in this meta-analysis. The overall incidence of IPC complications was 20.3% (95% confidence interval [CI]: 15.0-26.3). The top four complications were: overall infection incidence 5.7% (95% CI: 0.7-2.4); overall catheter abnormality incidence 4.4% (95% CI: 2.8-6.3); pain incidence 1.2% (95% CI: 0.4-2.4); and overall loculation incidence 0.9% (95% CI: 0.1-2.1). Subgroup and meta-regression analyses for overall complications and infections by country, PE site, and PE type demonstrated these factors did not contribute significantly to heterogeneity. Further subgroup analyses for infection of benign PE showed that the overall infection incidence (12.6% [95% CI: 8.1-17.8] vs 0.7% [95% CI: 0.0-4.5]) and empyema incidence (9.1% [95% CI: 5.3-13.8] vs 0.0% [95% CI: 0.0-2.3]) of patients with liver-related PE were significantly higher than that of patients with heart-related PE. Our meta-analysis showed reliable pooled incidences of IPC-related complications, with infection being the most common. These results serve to remind clinicians about the incidence of IPC-related complications and emphasize the importance of taking corresponding preventive and therapeutic steps.

Pleural Effusions and Pericarditis: A Retrospective Cohort Study of Patients Undergoing Cardiac Magnetic Resonance Imaging

Background

Pleural effusions can occur due to acute pericarditis and can necessitate intervention. We sought to add to the evidence base by performing a retrospective review of patients presenting to the advanced cardiac imaging unit with pericarditis and pleural effusion to determine laterality, trends in pleural fluid analyses, and the need for pleural intervention. Local ethical (Caldicott) approval was obtained for this study.

Methodology

Descriptive statistical methodology was applied with continuous data presented as mean (standard deviation, SD; range) and categorical variables as frequencies or percentages.

Results

In 60 patients with pericarditis, 24 (39%) had pleural effusions on contemporaneous imaging. The mean age of the study population was 63.3 years (range: 20-83), and 17 patients were males. Diagnoses were viral (five), rheumatological (one), amyloidosis (one), listeria (one), and the rest idiopathic (17). Four effusions were only left-sided, one right-sided, and 20 bilateral. Ten pleural taps were performed, one for a unilateral effusion and nine for one side being bigger than the other. The mean pH was 7.46 (7.33-7.6), mean lactate dehydrogenase was 210 (74-393 U/L), mean fluid protein was 36.1 (19-56 g/L) (four effusions exudative/three transudative), mean glucose was 5.8 (4.8-6.8 mmol/L), and all cytologies were negative. Five patients underwent large volume aspirations for symptom control. Three indwelling pleural catheters (IPC) were placed for treatment refractory effusions. There was one pleural space infection in six months related to an IPC. There were three deaths at 12 months, with none related to pericarditis.

Conclusions

Pleural effusions associated with pericarditis are usually small, bilateral, and exudative. Treatment refractory cases require pleural intervention, with aspirations, drains, and IPCs being viable options. Further prospective studies are warranted.