Discover the diagnostic criteria for pleural effusions, including the Light’s Criteria Rule, differentiating transudates and exudates based on protein and LDH levels. Learn about low pleural fluid glucose concentrations and associated conditions like rheumatoid pleurisy or malignancy. Understand CD4 count implications for infections like Mycobacterium avium complex (MAC) and histoplasmosis. Find out about glucose transport issues and prophylactic treatment strategies. Get insights into v…