Am. Elliott et al., FAILURE OF DRUG PENETRATION AND ACQUISITION OF DRUG-RESISTANCE IN CHRONIC TUBERCULOUS EMPYEMA, Tubercle and lung disease, 76(5), 1995, pp. 463-467
We describe a patient with drug-resistant chronic tuberculous empyema
in whom substantial differences between achievable pleural fluid and s
erum drug concentrations were displayed, The ratio of maximum concentr
ation in pleural fluid to serum was especially low for rifampin (4%) b
ut was also low for streptomycin (34%) and ofloxacin (48%). Subtherape
utic drug concentrations in the pleural fluid may have contributed to
acquisition of drug resistance in this case.