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Murine Oropharyngeal Aspiration Model of Ventilator-associated and Hospital-acquired Bacterial Pneumonia
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Pneumonia caused by Aeromonas species in Taiwan, 2004-2011

C M Chao1, C C Lai, H Y Tsai

  • 1Department of Intensive Care Medicine, Chi Mei Medical Center, Liouying, Tainan, Taiwan.

European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology
|March 12, 2013
PubMed

Insights

Aeromonas species cause severe pneumonia, particularly in older men and immunocompromised individuals. Risk factors for mortality include liver cirrhosis, cancer, and shock, highlighting the need to consider Aeromonas in severe respiratory infections.

Area of Science:

  • Infectious Diseases
  • Pulmonology
  • Microbiology

Background:

  • Aeromonas species are increasingly recognized as opportunistic pathogens.
  • Pneumonia caused by Aeromonas species is rare but can be severe.
  • Understanding the clinical characteristics and outcomes is crucial for effective management.

Purpose of the Study:

  • To investigate the clinical features, causative Aeromonas species, and outcomes of patients with Aeromonas-associated pneumonia.
  • To identify risk factors associated with mortality in these patients.

Main Methods:

  • Retrospective review of medical records of 84 patients diagnosed with Aeromonas pneumonia between 2004 and 2011.
  • Identification of Aeromonas species and analysis of patient demographics, underlying conditions, and clinical outcomes.

Main Results:

  • Aeromonas pneumonia predominantly affected elderly males.
  • Aeromonas hydrophila was the most common species (59.5%).
  • Cancer (44.0%) and diabetes mellitus (32.1%) were the most frequent underlying conditions.
  • Drowning-associated pneumonia occurred in 7.1% of cases.
  • Mortality was significantly associated with liver cirrhosis, cancer, shock, and mechanical ventilation.

Conclusions:

  • Aeromonas species are significant pathogens causing severe pneumonia, especially in immunocompromised individuals.
  • Aeromonas should be considered in drowning-associated pneumonia.
  • Liver cirrhosis, cancer, and initial shock presentation are indicators of poor prognosis.

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