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  • Title: Pleural fluid lactate in pleural effusion.
    Author: Weynants P, Reynaert M, Lievens M, Francis C.
    Journal: Eur J Respir Dis; 1987 Jul; 71(1):19-22. PubMed ID: 3653301.
    Abstract:
    Pleural fluid lactate (PFL) and blood lactate (BL) concentrations were simultaneously measured in samples from 46 patients with pleural effusion. PFL exceeded 6 mmol/l in all 15 patients with pyogenic bacterial pleurisy but in only 5 of the other 31 patients. We have found that a PFL-BL difference greater than or equal to 6 mmol/l has a sensitivity of 100% and a specificity of 93.8% in detecting pyogenic pleural effusions. Results are available within 1 h of sample collection, so that PFL-BL difference may become a useful aid in the early assessment of pleural effusions.
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