An Unusual Case of Corynebacterium Gleum Peritonitis in a Peritoneal Dialysis Patient

Introduction

Peritoneal dialysis (PD) is a life-sustaining therapy for patients with end-stage renal disease (ESRD), but it comes with the risk of peritonitis—a serious complication that requires prompt diagnosis and treatment. While Gram-positive bacteria are the usual culprits, this case presents a rare instance of Corynebacterium gleum peritonitis, highlighting the need for heightened awareness of atypical pathogens in PD patients.

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Case Overview

A 72-year-old male with end-stage renal disease (ESRD) undergoing peritoneal dialysis presented with:

• Symptoms: Fever, abdominal pain, vomiting, and cloudy dialysate for three days.
• Initial Examination:
  • Blood Pressure: 120/80 mmHg
  • Pulse Rate: 88 bpm
  • Temperature: 38°C
  • Peritoneal Dialysis Effluent WBC: 6345 cells/μL (75% neutrophils)

Diagnosis & Treatment Approach

• Initial Empirical Therapy: Vancomycin and Ceftazidime.
• Microbiological Findings:
  • Corynebacterium gleum was identified in peritoneal fluid culture after five days.
  • Antibiotic Sensitivity:
    • Sensitive: Ceftazidime, Cefepime, Levofloxacin, Piperacillin-Tazobactam.
    • Resistant: Ciprofloxacin, Meropenem.
• Final Treatment Plan:
  • Intraperitoneal ceftazidime and intravenous levofloxacin for 3 weeks.
  • Outcome: Symptoms resolved, and peritoneal fluid cultures became sterile.
• Corynebacterium gleum, traditionally considered an environmental microorganism, is an emerging opportunistic pathogen. It has been linked to hospital-acquired infections, particularly in immunocompromised patients or those with invasive devices.

The American Society of Nephrology (ASN) emphasizes the need for stringent infection control measures to prevent such rare bacterial infections in PD patients.

Clinical Implications & Takeaways

• Early and accurate identification of rare pathogens like C. gleum is critical for guiding appropriate antimicrobial therapy.
• Avoiding prolonged hospital stays and minimizing invasive procedures can help reduce the risk of nosocomial infections.
• Regular monitoring of PD patients for unusual infections can prevent complications and improve outcomes.

Read the full study at: https://doi.com/10.29328/journal.jcn.1001095

Final Thoughts

This case underscores the importance of rapid microbial identification and tailored antibiotic therapy in PD-related infections. As rare pathogens become more recognized in clinical settings, proactive infection control strategies are vital for improving patient safety.

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