著者

蝶名林 直彦 中森 祥隆 鈴木 幹三 立花 昭生 中田 紘一郎 岡野 弘 谷本 普一 松岡 ひろ子

出版者

The Japanese Respiratory Society

雑誌

日本胸部疾患学会雑誌 (ISSN:03011542)

巻号頁・発行日

vol.20, no.1, pp.89-96, 1982-01-25 (Released:2010-02-23)

参考文献数

20

被引用文献数

1

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We examined the pathogens of 204 patients with acute pneumonia at our hospital between Jan. 1970 and Dec. 1979 to study the changes of the pathogens in community acquired acute pneumonias over a period of 10 years.The results were as follows:1) Of 204 cases, bacterial pathogens accounted for 53 cases (26.0%), mycoplasmas pneumoniae 35 cases (11.3%) and viral species 9 cases (4.4%). However, in the remaining 107 cases (52.4%) the pathogens could not be identified.2) Of bacterial pathogens, Streptococcus pneumoniae was the most frequegt etiologic agent (29.0%), Hemophilus influenzae was the second (22.6%), Pseudomonas aeruginosa the third (17.7%) and the majority of the pathogens were gram negative bacilli including E. coli, Klebsiella aerogenes and Serratia marcescens. Although lung abscess and empyema were included in this series, Staphylococcus aureus was the pathogen in only 3 cases.3) The study of the yearly incidence of each pathogen demonstrated that pneumonias due to Hemophilus influenzae increased since 1974, but the those of undetermined pathogens decreased.4) To study the relationship between the pneumonias and the underlying deseases, the pneumonias due to S. pneumoniae and H. influenzae occurred both in previously healthy patients and in those with underlying diseases. The pneumonias due to gram negative bacilli occurred in patients with underlying diseases, while mycoplasmal pneumonias primarily occurred in previously healthy patients.5) The age of the patients with bacterial pneumonias increased in recent years, however, the majority of mycoplasmal pneumonias still occurred in young or middle aged people.6) We have often used the transtracheal aspiration (TTA) technique to determine the pathogens of the pneumonias when the pathogens are not determined from the sputums. In this series, the pathogens were identified in 14 out of 42 cases examined with TTA. However in 12 out of 14 cases the pathogens could not be identified by examining sputums.