Ralstonia pickettii: a persistent gram-negative nosocomial infectious organism

Area of Science:

• Clinical Microbiology
• Infectious Diseases
• Bacteriology

Background:

• Non-fermenting Gram-negative bacilli are significant causes of hospital-acquired infections.
• Ralstonia pickettii is often considered a pathogen of minor clinical importance.
• Opportunistic pathogens exploit compromised host defenses.

Purpose of the Study:

• To review the clinical significance of Ralstonia pickettii infections.
• To highlight the spectrum and severity of infections caused by R. pickettii.
• To re-evaluate the pathogenic potential of R. pickettii.

Main Methods:

• Literature review of reported cases and instances of Ralstonia pickettii infections.
• Analysis of infection types, including bacteraemia, pseudobacteraemia, and invasive diseases.
• Examination of patient outcomes, including mortality.

Main Results:

• Ralstonia pickettii has been implicated in various infections, including bacteraemia/septicaemia from contaminated solutions.
• Severe and invasive infections such as meningitis, septic arthritis, and osteomyelitis have been reported.
• Six deaths in four separate incidents have been linked to R. pickettii infections.

Conclusions:

• Ralstonia pickettii is a more significant pathogen than previously recognized.
• The organism can cause a range of infections, from pseudobacteraemia to severe, life-threatening conditions.
• Increased awareness and vigilance are needed for R. pickettii in clinical settings.