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Published on: November 22, 2013
[A case of Legionella pneumonia with multiple organ failure]
Abstract:
Legionella pneumonia (LP) is a rare systemic infectious disease, which is often misdiagnosed by clinicians due to the atypical symptoms. A middle-aged man who suffered from fever and dyspnea was diagnosed as community acquired pneumonia (CAP) in Changsha Central Hospital in March 2015. The treatment was unsatisfied firstly. The patients showed further symptoms of rhabdomyolysis, acute liver and renal failure, and impaired neural functions, who was diagnosed as LP with multiple organ failure based on a positive test for Legionella antibody. The patient was recovered after treated with moxifloxacin combined with azithromycin and continuous renal replacement therapy. LP should be paid attention when patient was diagnosed as CAP and failed to be treated. The satisfied outcome is achieved after application of macrolide, quinolones and comprehensive treatments.
Insights
Legionella pneumonia (LP) is a rare infection often misdiagnosed as community-acquired pneumonia (CAP). Prompt diagnosis and treatment with antibiotics like macrolides and quinolones, alongside supportive care, are crucial for patient recovery.
Area of Science:
- Infectious Diseases
- Internal Medicine
- Critical Care Medicine
Background:
- Legionella pneumonia (LP) is a rare but severe systemic infectious disease.
- LP often presents with atypical symptoms, leading to frequent misdiagnosis as community-acquired pneumonia (CAP).
Observation:
- A middle-aged male patient initially diagnosed with CAP presented with fever and dyspnea.
- The patient developed severe complications including rhabdomyolysis, acute liver and renal failure, and neurological impairment.
- Diagnosis of LP with multiple organ failure was confirmed via a positive Legionella antibody test.
Findings:
- Initial CAP treatment was ineffective.
- The patient recovered following treatment with moxifloxacin and azithromycin (macrolide and quinolone antibiotics) combined with continuous renal replacement therapy.
- Successful management highlights the importance of considering LP in refractory CAP cases.
Implications:
- Clinicians should maintain a high index of suspicion for Legionella pneumonia in patients diagnosed with CAP who do not respond to initial treatment.
- Early and accurate diagnosis, coupled with appropriate antibiotic therapy (macrolides, quinolones) and comprehensive supportive care, can lead to favorable outcomes in severe LP cases.
- This case underscores the critical need for awareness and timely intervention in managing this potentially fatal infection.
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