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A Rare Case of Leuconostoc pseudomesenteroides Bacteremia and Refractory Septic Shock
Mike Ghobrial1, Mohamed Ibrahim2, Spencer G Streit1
1Internal Medicine, University of Florida College of Medicine - Jacksonville, Jacksonville, USA.
Abstract:
Leuconostoc species are rare causes of bacteremia and are commonly mistaken for Streptococcus species. Due to their inherent resistance to commonly used drugs, they are often overlooked resulting in poor and sometimes lethal outcomes. While there are not many reported cases of this bacterial infection, Leuconostoc species are important to consider when faced with a highly drug-resistant bacterial strain. We present here a case of a 29-year-old male who presented with an out-of-hospital cardiac arrest, initially resuscitated but ultimately succumbing to his illness. This is a unique case in which our patient was subsequently found to have a rare bloodstream infection with Leuconostoc pseudomesenteroides.
Insights
Leuconostoc pseudomesenteroides, a rare cause of bacteremia, is often misidentified and resistant to antibiotics. This case highlights the importance of considering this pathogen in drug-resistant infections, even when rare.
Area of Science:
- Medical Microbiology
- Infectious Diseases
- Bacteriology
Background:
- Leuconostoc species are uncommon causes of bloodstream infections (bacteremia).
- These bacteria are frequently misidentified as Streptococcus species.
- Inherent antimicrobial resistance in Leuconostoc often leads to delayed or incorrect treatment.
Observation:
- A 29-year-old male presented with out-of-hospital cardiac arrest.
- Initial resuscitation was successful, but the patient's condition deteriorated.
- A rare bloodstream infection with Leuconostoc pseudomesenteroides was diagnosed.
Findings:
- The patient's infection was caused by Leuconostoc pseudomesenteroides.
- This pathogen is intrinsically resistant to many commonly used antibiotics.
- Misidentification and drug resistance contributed to poor patient outcomes.
Implications:
- Clinicians should consider Leuconostoc species in cases of severe, drug-resistant bacteremia.
- Accurate identification of Leuconostoc is crucial for appropriate antimicrobial therapy.
- Increased awareness may improve outcomes for patients with these rare infections.
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