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Updated: May 25, 2026

A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
[Sepsis due to Pseudomonas aeruginosa in a previously healthy infant]
Carmen Sandoval C1, Claudia Moreno M, Katia Abarca V
1Departamento de Pediatría, Pontificia Universidad Católica de Chile, Santiago, Chile.
Abstract:
Pseudomonas aeruginosa, is an opportunistic organism widely distributed in both environmental and nosocomial settings. Invasive infections typically occur in immunocompromised patients, but this agent can also produce sepsis in the immunocompetent host. We report the case of an 8 months old infant, previous healthy, who presented septic shock by P. aeruginosa. Lesions of ecthyma gangrenosum in his limbs required surgical debridement. The patient presented transitory neutropenia and reduced C4 levels but subsequent study of immune defects was normal.
Insights
A previously healthy infant experienced septic shock caused by Pseudomonas aeruginosa, a rare opportunistic infection. The infant developed ecthyma gangrenosum lesions requiring surgery, with temporary immune system changes.
Area of Science:
- Medical Microbiology
- Pediatric Infectious Diseases
- Immunology
Background:
- Pseudomonas aeruginosa is an opportunistic pathogen found in environmental and healthcare settings.
- Invasive infections usually affect immunocompromised individuals but can cause sepsis in healthy hosts.
- Septic shock in infants can be life-threatening, necessitating prompt diagnosis and treatment.
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