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Outcomes in patients with Mycobacterium abscessus pulmonary disease treated with long-term injectable drugs
Jiwon Lyu1, Hang Jea Jang, Jin Woo Song
1Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, 388-1 Poongnap-dong, Songpa-gu, Seoul 138-736, South Korea.
Background:
The ATS (American Thoracic Society) has recommended periodic administration of multidrug therapy, including a macrolide and one or more parenteral agents or a combination of parenteral agents, over 2-4 months, for treatment of Mycobacterium abscessus pulmonary disease. However, there is little hard evidence supporting these guidelines, and treatment outcomes have not yet been reported.
Methods:
We retrospectively evaluated 41 patients with M. abscessus pulmonary disease treated in accordance with ATS guidelines. These patients were treated empirically with multidrug regimens, including a macrolide and one (amikacin) or more (amikacin and cefoxitin or imipenem) parenteral agents, over several months. Treatment outcomes were defined as treatment success, failure, or default.
Results:
Seventeen (41.5%) patients were prescribed a macrolide and one parenteral agent, and 24 (58.5%) were prescribed a macrolide and two parenteral agents. The median duration of parenteral and total antibiotic treatment were 230 days (range, 60-601 days) and 511 days (range, 164-1249 days), respectively. The treatment success, failure, and default rates were 80.5% (33/41), 12.2% (5/41), and 7.3% (3/41), respectively. Four patients relapsed over 445 days (range, 0-1443 days) of follow-up. There were no significant differences in treatment success and relapse rates between the groups receiving one and two parenteral agents. Adverse reactions developed in 18 of 41 patients (43.9%).
Conclusions:
Combination antibiotic therapy, including long-term (minimum 2-4 months) parenteral drugs, as recommended by the ATS, resulted in successful treatment outcomes in 80.5% of patients with M. abscessus lung disease in Korea.
Insights
Treatment for Mycobacterium abscessus lung disease using American Thoracic Society guidelines showed an 80.5% success rate. This multidrug therapy, including macrolides and parenteral agents, offers effective outcomes for this rare pulmonary infection.
Area of Science:
- Pulmonology
- Infectious Diseases
- Microbiology
Background:
- The American Thoracic Society (ATS) recommends multidrug therapy for Mycobacterium abscessus pulmonary disease.
- Current guidelines suggest 2-4 months of treatment with macrolides and parenteral agents.
- Evidence supporting these ATS guidelines and reported outcomes are limited.
Purpose of the Study:
- To evaluate the effectiveness of ATS-recommended multidrug therapy for Mycobacterium abscessus pulmonary disease.
- To report treatment outcomes, including success, failure, and relapse rates.
- To analyze adverse reactions associated with the treatment regimen.
Main Methods:
- Retrospective evaluation of 41 patients with M. abscessus pulmonary disease treated per ATS guidelines.
- Empirical multidrug regimens included a macrolide plus one (amikacin) or two (amikacin and cefoxitin/imipenem) parenteral agents.
- Treatment outcomes categorized as success, failure, or default.
Main Results:
- 80.5% treatment success rate (33/41 patients).
- Median parenteral treatment duration was 230 days; total antibiotic duration was 511 days.
- Adverse reactions occurred in 43.9% of patients; no significant difference in success between one vs. two parenteral agents.
Conclusions:
- ATS-recommended combination antibiotic therapy, including long-term parenteral drugs, achieved successful outcomes in 80.5% of M. abscessus lung disease patients in Korea.
- The findings support the efficacy of current ATS guidelines for treating this challenging pulmonary infection.
- Long-term treatment with macrolides and parenteral agents is crucial for successful management.
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