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Pseudomonas oryzihabitans: An Emerging Opportunistic Pathogen Causing Severe Burn Wound Infection After Improper
Ruofan Wang1, Jiongbiao Yu1, Yubin Guan1
1Clinical Laboratory, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, People's Republic of China.
Background:
Pseudomonas oryzihabitans, a Gram-negative opportunistic pathogen, is associated with infected burn wounds in elderly patients with underlying diseases. Moxibustion patch-related deep burns in farmers (due to occupational exposure) often have nonspecific manifestations, causing diagnostic delays. This case highlights the synergistic role of microbiologically guided antimicrobial therapy and surgical intervention.
Case Summary:
A 71-year-old female farmer with type 2 diabetes and bilateral lower extremity arteriosclerotic occlusive disease developed left lower leg third-degree burn due to improper moxibustion patch use; wound infection occurred after self-treatment. Wound secretion culture confirmed Pseudomonas oryzihabitans (colony count ≥106 CFU/mL) sensitive to cefoperazone-sulbactam. She received microbiologically guided antimicrobial therapy combined with surgical debridement, negative pressure wound therapy (NPWT), and elective split-thickness skin grafting. Postoperatively, infection indicators decreased significantly, the wound healed well, and no recurrence or complications were observed.
Conclusion:
Elderly patients with underlying diseases are at high risk of such burns and infections. The synergistic application of microbiologically precise antimicrobial therapy and surgical intervention is key to improving efficacy and reducing recurrence.
Insights
This case study details a deep burn infection in an elderly farmer caused by Pseudomonas oryzihabitans. Effective treatment involved targeted antibiotics and surgical intervention, leading to successful wound healing.
Area of Science:
- Infectious Diseases
- Dermatology
- Surgery
Background:
- Pseudomonas oryzihabitans is an opportunistic pathogen linked to burn wound infections in elderly patients with comorbidities.
- Moxibustion patch burns can present with nonspecific symptoms, delaying diagnosis, especially in occupational settings.
- Elderly individuals with pre-existing conditions face heightened risks for severe burns and subsequent infections.
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