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Three Weeks of Treatment Induced Long-term Remission in a Patient with Micrococcus luteus-related Peritonitis
Ryosuke Saiki1, Tomohiro Murata1, Kayo Tsujimoto1
1Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Japan.
Abstract:
Micrococcus luteus can cause relapsing and refractory peritoneal dialysis infection because it leads to strong biofilm formation. A 69-year-old woman who had undergone peritoneal dialysis (PD) visited the emergency department complaining of cloudy peritoneal dialysate. She was initially given intraperitoneal cefazolin (1 g/day) and ceftazidime (1 g/day). Micrococcus luteus was detected in a culture test. Thus, ceftazidime was discontinued. She remained disease-free for 22 months until she developed PD-related peritonitis. We administered antibiotics for 21 days and thereafter identified 2 important clinical issues. Micrococcus species-related peritonitis can sometimes be cured without vancomycin. Furthermore, the provision of three weeks of sufficient treatment may be important.
Insights
Micrococcus luteus causes difficult peritoneal dialysis infections due to biofilm. This case shows that Micrococcus peritonitis may be treated effectively without vancomycin, with three weeks of antibiotics being crucial.
Area of Science:
- Nephrology
- Infectious Diseases
- Microbiology
Background:
- Peritoneal dialysis (PD) is a vital treatment for end-stage renal disease.
- Micrococcus luteus is a Gram-positive bacterium known for forming robust biofilms.
- Biofilm formation by Micrococcus luteus can lead to persistent and recurrent PD-related infections, posing a significant challenge in patient management.
Observation:
- A 69-year-old female PD patient presented with cloudy dialysate, indicative of peritonitis.
- Initial treatment with intraperitoneal cefazolin and ceftazidime was administered.
- Micrococcus luteus was identified as the causative agent, leading to the discontinuation of ceftazidime.
Findings:
- The patient experienced a recurrence of PD-related peritonitis after 22 months of being disease-free.
- A 21-day course of antibiotics was administered for the recurrent infection.
- The case highlights that Micrococcus species-related peritonitis can be successfully treated without vancomycin.
- A three-week duration of antibiotic therapy appears to be a critical factor for successful treatment outcomes.
Implications:
- This case suggests alternative antibiotic strategies for Micrococcus peritonitis in PD patients.
- Optimizing antibiotic treatment duration is essential for managing refractory PD infections.
- Further research into biofilm-disrupting agents or novel therapeutic approaches may be warranted for Micrococcus-related PD infections.
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