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Related Experiment Videos

The glucose-pH relationship in parapneumonic effusions.

D E Potts, D A Taryle, S A Sahn

    Archives of Internal Medicine
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    Low pleural fluid glucose and acidosis indicate severe inflammation. This study found a strong correlation between low glucose and low pH in parapneumonic effusions, suggesting interrelated mechanisms.

    Area of Science:

    • Pulmonary Medicine
    • Critical Care Medicine
    • Biochemistry

    Background:

    • Low pleural fluid glucose and acidosis are recognized markers of severe pleural inflammation.
    • The precise relationship between these two markers has not been clearly defined.

    Purpose of the Study:

    • To investigate the relationship between simultaneous pleural fluid glucose concentrations and pH in parapneumonic effusions.
    • To determine if low glucose and low pH are interrelated phenomena in pleural inflammation.

    Main Methods:

    • Simultaneous measurement of pleural fluid glucose and pH in 25 consecutive parapneumonic pleural effusions.
    • Patients were divided into two groups based on pleural fluid glucose concentration (>60 mg/dl and <60 mg/dl).

    Main Results:

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    • A significant correlation (r = .81, P < .01) was observed between pleural fluid glucose and pH.
    • Effusions with low glucose (<60 mg/dl) also exhibited low pH (<6.83), indicating acidosis.
    • Low-glucose, low-pH effusions were associated with complicated outcomes, such as loculated effusions or empyemas.

    Conclusions:

    • The concomitant occurrence of low pleural fluid glucose and pH suggests their underlying mechanisms are interrelated.
    • Uncomplicated parapneumonic effusions typically have glucose concentrations >60 mg/dl and pH >7.30.
    • These findings highlight the clinical significance of monitoring both glucose and pH in pleural fluid for assessing inflammation severity.