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Right Lower Extremity Osteomyelitis With Alcaligenes faecalis in a Patient With Poorly Controlled Type 2 Diabetes
John C Smith1, Marco Comianos1, Wesley Tang1
1Division of Internal Medicine, Kettering Health, Dayton, USA.
Alcaligenes faecalis, a bacterium resistant to antibiotics, rarely causes osteomyelitis. This case highlights a diabetic foot ulcer infection by this opportunistic pathogen.
Area of Science:
- Microbiology
- Infectious Diseases
- Bacterial Pathogenesis
Background:
- Alcaligenes faecalis is a Gram-negative, aerobic bacterium found in environmental and human microbiota.
- It is known for intrinsic antibiotic resistance and emerging acquired resistance.
- Opportunistic infections by A. faecalis are uncommon but increasingly recognized.
Observation:
- A rare case of osteomyelitis caused by A. faecalis is presented.
- The infection occurred in a patient with a chronic diabetic foot ulcer.
- This highlights a challenging clinical scenario due to bacterial resistance.
Findings:
- Alcaligenes faecalis demonstrated resistance to common antibiotics.
- Osteomyelitis is a severe bone infection that can arise from chronic wounds.
- The case underscores the diagnostic and therapeutic difficulties posed by resistant bacteria.
Implications:
- Increased awareness of Alcaligenes faecalis as a potential pathogen in opportunistic infections.
- Need for judicious antibiotic selection and susceptibility testing in complex infections.
- Importance of wound care in diabetic patients to prevent severe infections like osteomyelitis.
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