BMJ open respiratory research · 2025
Evaluation of biomarkers sTREM-1, procalcitonin and C reactive protein in the diagnosis of pleural infection.
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Alvarenga Vanessa Adelia, Teixeira Lisete Ribeiro, Sales Roberta Karla Barbosa, Colares Philippe Figueiredo Braga, Silva Carlos Sergio Rocha, Marchi Evaldo, Acencio Milena Marques Pagliarelli
Аннотация
UNLABELLED: Diagnosis of complicated parapneumonic pleural effusion (CPPE), empyema and uncomplicated parapneumonic pleural effusion (UPPE) is vital in therapeutic management.
OBJECTIVE: To measure the pleural fluid concentrations of soluble triggering receptor expressed on myeloid cell-1 (sTREM-1), procalcitonin (PCT) and C reactive protein (CRP) to provide information for diagnosing and discriminating between CPPE and UPPE.
METHODS: Retrospective data analysis from February 2016 to December 2017, focused on pleural fluid analysis of patients with infectious (PPE, empyema and tuberculosis) and non-infectious (malignant and transudates) effusions.
RESULTS: Over 224 pleural fluid samples collected, 29 were empyema, 48 CPPE, 31 UPPE, 35 tuberculous, 47 malignant and 34 transudates. The levels of sTREM-1 and PCT were significantly higher in empyema (3658±1474 and 1704±1027) and CPPE (2651±1058 and 841±667) and lower in transudates (p<0.001). CRP levels were significantly higher in empyema (88.8±61.5) and CPPE (83.8±42.6) than in other groups (p<0.001), with no difference between them.
CONCLUSION: The study demonstrated higher sTREM-1, PCT and CRP levels in empyema and CPPE and lower levels in transudates. Both sTREM-1 and CRP showed a higher than 70% diagnostic accuracy between infectious and non-infectious pleural effusions and between CPPE and UPPE; however, not superior to LDH pleural fluid levels.
OBJECTIVE: To measure the pleural fluid concentrations of soluble triggering receptor expressed on myeloid cell-1 (sTREM-1), procalcitonin (PCT) and C reactive protein (CRP) to provide information for diagnosing and discriminating between CPPE and UPPE.
METHODS: Retrospective data analysis from February 2016 to December 2017, focused on pleural fluid analysis of patients with infectious (PPE, empyema and tuberculosis) and non-infectious (malignant and transudates) effusions.
RESULTS: Over 224 pleural fluid samples collected, 29 were empyema, 48 CPPE, 31 UPPE, 35 tuberculous, 47 malignant and 34 transudates. The levels of sTREM-1 and PCT were significantly higher in empyema (3658±1474 and 1704±1027) and CPPE (2651±1058 and 841±667) and lower in transudates (p<0.001). CRP levels were significantly higher in empyema (88.8±61.5) and CPPE (83.8±42.6) than in other groups (p<0.001), with no difference between them.
CONCLUSION: The study demonstrated higher sTREM-1, PCT and CRP levels in empyema and CPPE and lower levels in transudates. Both sTREM-1 and CRP showed a higher than 70% diagnostic accuracy between infectious and non-infectious pleural effusions and between CPPE and UPPE; however, not superior to LDH pleural fluid levels.