Blood and tissue concentrations of Latamoxef

The concentration of Latamoxef (LMOX) was determined by bioassay in surgical patients with sinusitis and chronic tonsillitis. One or two grams of LMOX was injected intravenously prior to tonsillectomy under general anesthesia and the Caldwell-Luc operation under local anesthesia.Concentrations of LMOX in the tonsil and maxillary bone were 12.7μg/g and 16.8μg/g respectively one hour after administration;and 9.4μg/g and 2.3μg/g respectively two hours after administration.The transfer ratio, the concentration in the tonsil to that in the serum, was about 20 percent. The tissue concentrations exceeded the antibacterial level of LMOX except for Pseudomonas aeruginosa.