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Published on: April 7, 2015
Clinical features of patients suffering from Streptococcus milleri infections--a retrospective analysis
N Shimono1, T Ishimaru, K Takaki
1First Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka.
Abstract:
We examined the clinical records of patients from whom S. milleri was isolated at Kyushu University Hospital from January 1987 through December 1988. Sixty-one patients were treated in 64 episodes with drainage or antibiotics. Oral and nasopharyngeal infections were observed in 27 cases, intrathoracic infections in 13, urogenital infections in 8, intraabdominal infections in 6 and skin and subcutaneous infections in 6. Except for acute bronchitis and urogenital infections, all of them were suppurative. As to underlying diseases, 21 patients had malignancies and 6 had diabetes mellitus. Leukocytopenia was not observed in any of the patients. S. milleri can be eradicated by treatment but it is sometimes replaced by other organisms. However, considering its tendency to cause suppurative infections, its pathogenic significance should be taken into account and patients should undergo surgical drainage combined with antibiotic therapy.
Insights
Streptococcus milleri (S. milleri) commonly causes suppurative infections, particularly in the oral and nasopharyngeal regions. Effective treatment involves surgical drainage and antibiotic therapy to manage these significant pathogenic infections.
Area of Science:
- Medical Microbiology
- Infectious Diseases
Background:
- Streptococcus milleri (S. milleri) is a bacterium known to cause various infections.
- Understanding the clinical manifestations and treatment outcomes of S. milleri infections is crucial for patient management.
Purpose of the Study:
- To analyze the clinical characteristics and outcomes of infections caused by S. milleri.
- To evaluate the efficacy of current treatment strategies for S. milleri infections.
Main Methods:
- Retrospective review of clinical records of patients with S. milleri isolates.
- Data collection on infection sites, underlying conditions, and treatment modalities.
- Analysis of treatment outcomes, including eradication and recurrence.
Main Results:
- S. milleri was isolated from 61 patients over 64 episodes between 1987-1988.
- Common infection sites included oral/nasopharyngeal (27), intrathoracic (13), and urogenital (8).
- Most infections were suppurative, often associated with underlying malignancies or diabetes mellitus.
Conclusions:
- S. milleri infections, predominantly suppurative, require careful consideration of their pathogenic significance.
- Combined surgical drainage and antibiotic therapy are recommended for effective management.
- While S. milleri can be eradicated, vigilance for potential replacement by other organisms is necessary.
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