Abstract
We have accumulated statistics of the identification and susceptibility of clinically isolated bacteria at Showa University Hospital, during the year July 1991 to June 1992. Detailed and accurate results of identification and susceptibility can be produced by AUTOSCAN-4 (Baxter, CA) .Staphylococcus aureusandPseudomonas aeruginosawere most frequently isolated. Otherr isolated bacteria were considered to have originated from resident flora or the environment. According to the susceptibility test, about 53% ofS. aureusisolates were identified as Methicillin ResistantS. aureus (MRSA), and 16% ofP. aeruginosaisolates showed extreme drug-resistance against the various antimicrobial agents. Many of both species were isolated from respiratory systems. Other species also showed resistance against various antibiotics ; each has its own unique susceptibility pattern. Thus, antibiotics against these species should be carefully determined. MRSA were isolated from 100-150 patients out of a total of 1, 000 inpatients in the hospital per month. Thirty percent of the patients infected with MRSA were also infected withP. aeruginosa.This indicates the difficulty of antimicrobial treatment of these multi infected patients.
