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Published on: February 23, 2014
[Three cases of Stenotrophomonas maltophilia pneumonia]
Satoru Fujino1, Keiko Hisatomi, Tetsuya Iida
1Department of Internal Medicine, Kitakyusyu Municipal Yahata Hospital.
Abstract:
We encountered 3 cases of pneumonia caused by Stenotrophomonas maltophilia between January and June 2001. S. maltophilia is resistant to broad-spectrum antibiotics including carbapenem. Reported studies indicate that excessive use of broad-spectrum antibiotics may induce resistance in this organism. However, our data showed that there was no clear correlation between the amounts of carbapenems used in our hospital and the isolation of the organism. If broad-spectrum antibiotics are ineffective or even actually worsen a case of pneumonia, S. maltophilia may be the sole causative organism, and a potent double- (or triple-) combination therapy consisting of minocyclin and one or two other potent antimicrobial agents should be considered.
Insights
Stenotrophomonas maltophilia pneumonia is a growing concern, often resistant to common antibiotics. Effective treatment may require combination therapy beyond standard broad-spectrum options.
Area of Science:
- Infectious Diseases
- Medical Microbiology
- Clinical Pharmacy
Background:
- Pneumonia cases caused by Stenotrophomonas maltophilia (S. maltophilia) were analyzed.
- S. maltophilia exhibits resistance to broad-spectrum antibiotics, including carbapenems.
- Previous research suggested a link between carbapenem use and S. maltophilia resistance.
Observation:
- Three cases of S. maltophilia pneumonia occurred between January and June 2001.
- No direct correlation was found between hospital carbapenem usage and S. maltophilia isolation.
- Broad-spectrum antibiotics were sometimes ineffective or exacerbated pneumonia symptoms.
Findings:
- S. maltophilia can be the sole causative agent in severe pneumonia.
- Minocycline combined with other potent antimicrobials shows promise for treatment.
- Effective therapeutic strategies are crucial due to organism resistance patterns.
Implications:
- Clinicians should consider S. maltophilia as a potential pathogen in resistant pneumonia cases.
- Rethinking empirical antibiotic strategies for pneumonia is necessary.
- Further research into optimal combination therapies for S. maltophilia infections is warranted.
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