Pseudomonas aeruginosa Bloodstream Infections: Risk Factors and Treatment Outcomes
Author Information
Author(s): Andrea Endimiani, Francesco Luzzaro, Beatrice Pini, Gianfranco Amicosante, Gian Maria Rossolini, Antonio Q. Toniolo
Primary Institution: Università dell'Insubria and Ospedale di Circolo
Hypothesis
What are the risk factors and treatment outcomes for bloodstream infections caused by PER-1-positive Pseudomonas aeruginosa strains compared to ESBL-negative strains?
Conclusion
Bloodstream infections caused by PER-1-positive Pseudomonas aeruginosa strains are associated with higher therapeutic failure rates and increased hospital costs.
Supporting Evidence
- 77.8% of BSI cases due to PER-1-Pa failed to respond to treatment compared to 28.6% for ESBL-N-Pa.
- Severe sepsis, bladder and intravascular catheters, immunosuppressive therapy, and mechanical ventilation were significantly associated with PER-1-Pa infections.
- Empirical treatment was inadequate in 88.9% of PER-1-Pa cases.
Takeaway
This study found that infections from a specific type of bacteria (PER-1-positive Pseudomonas aeruginosa) are harder to treat and cost more to manage than infections from other types of the same bacteria.
Methodology
The study analyzed clinical records of 26 bloodstream infection cases due to ceftazidime-resistant Pseudomonas aeruginosa strains, comparing those caused by PER-1-positive and ESBL-negative isolates.
Potential Biases
Potential biases in patient selection and treatment assessment due to retrospective design.
Limitations
The study is retrospective and may not capture all relevant clinical data.
Participant Demographics
The study included 24 patients, with a mean age of 58 years, predominantly male.
Statistical Information
P-Value
0.03
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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