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Related Concept Videos

Pneumonia I: Introduction01:30

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Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
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The treatment of pneumonia varies based on its severity and the causative pathogen. Here is a structured approach to managing pneumonia, integrating pharmaceutical and supportive care strategies.
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Perplexing pneumonia: Pasteurella lung infection.

Kim Pham1,2, Satish Kalanjeri2, Jeremy Johnson2

  • 1Pulmonary and Critical Care, University of Missouri Columbia Health Care, Columbia, Missouri, USA kprw3@umsystem.edu.

BMJ Case Reports
|June 17, 2025
PubMed
Summary
This summary is machine-generated.

A rare Pasteurella lung infection occurred in an elderly man after his cat licked his dentures. This case emphasizes considering Pasteurella, even without bites, and highlights denture hygiene importance.

Keywords:
BronchitisPneumonia (respiratory medicine)

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Area of Science:

  • Infectious Diseases
  • Pulmonology
  • Microbiology

Background:

  • Pasteurella multocida is a common oral bacterium in pets, usually causing localized infections after bites or scratches.
  • Respiratory Pasteurella infections are uncommon, typically affecting immunocompromised individuals or those with chronic lung conditions.

Purpose of the Study:

  • To report an unusual case of Pasteurella lung infection acquired indirectly from a pet.
  • To emphasize the importance of considering atypical transmission routes and patient history in diagnosing rare infections.

Main Methods:

  • Case report of an elderly male patient presenting with respiratory symptoms.
  • Diagnosis confirmed by bronchoalveolar lavage culture identifying Pasteurella multocida.
  • Treatment with intravenous ceftriaxone and oral amoxicillin-clavulanate.

Main Results:

  • The patient, without prior lung disease or immunosuppression, developed a Pasteurella lung infection.
  • The infection was linked to a cat licking the patient's dentures, an indirect transmission route.
  • Successful treatment with a course of antibiotics was achieved.

Conclusions:

  • Pasteurella species should be considered in respiratory infections, even without a history of animal bites or scratches.
  • Thorough patient history, including pet contact and hygiene practices, is crucial for identifying indirect infection sources.
  • Maintaining good denture hygiene may mitigate the risk of such zoonotic infections in pet owners.