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[Prognostic features of residual pleural thickening in metapneumonic pleural effusion]
M A Martínez1, P J Cordero, E Cases
1Servicio de Neumología, Hospital Universitario La Fe, Valencia.
Abstract:
Residual pleural thickening (RPT) develops in some patients after metapneumonic pleural effusion (MPE). Our aim was to identify factors that predict the development of RPT by retrospectively analyzing patients with MPE secondary to bacterial pneumonia in our practice from 1992 through April 1997. Patients were assigned to groups based on the presence or not of RPT (> 10 mm) three months or more after diagnosis of MPE. One hundred twenty-eight patients were included in the analysis. Seventy-nine patients (62%) developed RPT and 49 (38%) did not. Patients with RPT had significantly lower glucose levels and pH and higher LDH levels in pleural fluid. A higher percentage of patients with RPT had loculate pleural effusions and empyema, and they more often required insertion of drains. Logistic regression analysis showed that only glucose < 40 mg/dl (OR: 3.4; CI 95%: 2.3 to 4.5; p < 0.05) and the presence of pus collected from the initial thoracocentesis (OR: 3.6; CI 95%: 2.6 to 4.5; p < 0.01) were significantly associated with increased risk of developing residual pachypleuritis in subjects with MPE.
Insights
Low pleural fluid glucose and the presence of pus during initial thoracocentesis predict residual pleural thickening after bacterial pneumonia-related metapneumonic pleural effusion.
Area of Science:
- Pulmonology
- Thoracic Medicine
- Infectious Disease
Context:
- Residual pleural thickening (RPT) is a potential complication following metapneumonic pleural effusion (MPE).
- Identifying predictive factors for RPT is crucial for patient management and prognostication.
- Bacterial pneumonia is a common cause of MPE.
Purpose:
- To identify clinical and biochemical factors predicting the development of RPT after MPE secondary to bacterial pneumonia.
- To analyze pleural fluid characteristics and treatment interventions associated with RPT development.
Summary:
- A retrospective analysis of 128 patients with MPE revealed that 62% developed RPT.
- Patients with RPT exhibited significantly lower pleural fluid glucose and pH, and higher LDH levels.
- Logistic regression identified low glucose (< 40 mg/dl) and initial pus in thoracocentesis as significant predictors of RPT.
Impact:
- This study highlights key indicators for predicting RPT, enabling earlier identification of at-risk patients.
- Findings can inform clinical decision-making regarding treatment intensity and follow-up for MPE patients.
- Understanding RPT predictors may lead to improved strategies for preventing or mitigating pleural sequelae.