A Case of Bacteremia Caused by <i>Ochrobacterium </i><i>intermedium </i>

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  • HIRAI Jun
    Department of Clinical Infectious Diseases, Aichi Medical University Hospital Department of Infection Control and Prevention, Aichi Medical University Hospital Department of Infectious, Respiratory and Digestive Medicine, Control and Prevention of Infectious Diseases Faculty of Medicine, University of the Ryukyus
  • YAMAGISHI Yuka
    Department of Clinical Infectious Diseases, Aichi Medical University Hospital Department of Infection Control and Prevention, Aichi Medical University Hospital
  • SAKANASHI Daisuke
    Department of Infection Control and Prevention, Aichi Medical University Hospital
  • KOIZUMI Yusuke
    Department of Clinical Infectious Diseases, Aichi Medical University Hospital Department of Infection Control and Prevention, Aichi Medical University Hospital
  • SUEMATSU Hiroyuki
    Department of Infection Control and Prevention, Aichi Medical University Hospital
  • MIKAMO Hiroshige
    Department of Clinical Infectious Diseases, Aichi Medical University Hospital Department of Infection Control and Prevention, Aichi Medical University Hospital

Bibliographic Information

Other Title
  • <i>Ochrobactrum intermedium </i>菌血症の1 例
  • 症例 Ochrobactrum intermedium菌血症の1例
  • ショウレイ Ochrobactrum intermedium キンケッショウ ノ 1レイ

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Description

We report herein on a case of bacteremia caused by Ochrobactrum intermedium (O. intermedium) identified with biotyper matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). An 86-year-old man was admitted to our hospital with paralysis of the right side of the body and dysphagia. He was diagnosed as having a pontine infarction based on the brain MRI findings and was admitted to hospital to have anti-platelet therapy. Three days after admission, he had a fever. Although he had redness and swelling at the peripheral venous catheter insertion site, he was diagnosed as having aspiration pneumonia, since he had fine crackles on auscultation. Soon after taking two sets of blood cultures and removal of the peripheral venous catheter, sulbactam/ampicillin (SBT/ABPC) was administrated. Fifty three hours after incubation, gram-negative bacilli was detected from an aerobic bottle and identified as O. intermedium with MALDI-TOF MS (Bruker MS). Antimicrobial chemotherapy was changed to meropenem (MEPM). He was treated for a total of seven days, and recovered without relapse. Infection caused by O. intermedium has been very uncommon, however, O. intermedium has been recognized as an emerging pathogen in immunodeficient and immunocompetent patients. Since identification of Ochrobactrum species by biochemical methods could be difficult, MALDI-TOF MS might be helpful to clarify Ochrobactrum species just as in the present case.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 90 (2), 129-133, 2016

    The Japanese Association for Infectious Diseases

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