Bactriological Study on Specimens from the Department of Critical Care Medicine (DCCM), Nippon Medical School

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Other Title
  • 本学救命救急センターにおける細菌学的検討
  • 本学〔日本医科大学〕救命救急センターにおける細菌学的検討-2-特に緑膿菌の血清型と感受性分布について
  • ホンガク ニホン イカ ダイガク キュウメイ キュウキュウ センター ニ オケ
  • II. Serotype and Drug-sensitivity of <I>Pseudomonas aeruginosa</I>
  • 第II報特に緑膿菌の血清型と感受性分布について

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Description

Strains of Pseudomonas aeruginosa were detected from clinical materials obtained from patients atthe (DCCM), Nippon Medical School, over a period of about 5 years from April, 1977, to December, 1981. They were tested for serotype and sensitivity to six antibiotics. Their serotypes were comparedwith those of strains of the same species as this detected from the patients' feces and the environmentaround the patients' beds.<BR>The results obtained are summarized as follows.<BR>1) P. aeruginosa was isolated from 438 (14.7%) of 2, 987 samples collected. The total number ofclinical materials submitted for a year tended to increase with the lapse of time. On the contrary, the rateof detection of P. aeruginosa tended to decrease with the lapse of time.<BR>2) An attempt was made to classify 328 strains isolated into serotypes. As a result, 325 strains (99.1%) could be divided into known serotypes. Type E was predominant, to which 165 strains (50.3%) belonged. To types G and I belonged 42 strains (12.8%) and 34 strains (10.4%), respectively. Type E wasmore frequently found than any other type among the strains detected in any year. It decreased, however, gradually in frequency with the lapse of time. Then, many other serotypes became detectablegradually.<BR>3) The rate of resistant organisms showing an MIC of 100μg/ml or more was 53.0% to SBPC, 39.5% to DKB, and 35.5% to TOB, while it was only 1-2% to AMK, CL, or PL-B. Strains resistant toSBPC and DKB tended to decrease in frequency of detection, and those resistant to TOB to increaseyear by year. Those resistant to CL and PL-B began to appear in 1981.<BR>4) Strains of P. aeruginosa of the same serotype as those originated from clinical materials wereisolated from the feces and the environment around the bed three of four patients tested. Almost thesame tendency was noticed in the strains of this species detected from the other patient. These resultsseemed to suggest the phase of opportunistic infection with this species.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 57 (3), 195-204, 1983

    The Japanese Association for Infectious Diseases

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