[Ototoxicity of micronomicin sulfate--audiometric assessment].

Micronomicin sulfate (MCR) is a new aminoglycoside antibiotic, and its antibacterial spectrum is similar to that of gentamicin (GM). According to the animal test, MCR has less ototoxicity than other aminoglycoside antibiotics such as GM. To check its clinical ototoxicity, MCR was given intramuscularly to 20 patients at dose of 120--240 mg/day, respectively for 2--8 days, and audiometry was carried out before and after administration of MCR. No evident change was detected between the preadministration hearing levels and the postadministration hearing levels. These data suggest that MCR is sufficiently safe in ototoxicity within dose of 120 mg/day for 4 days.