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Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression
Published on: June 15, 2019
Severe pseudomonal infections
Gökhan M Mutlu1, Richard G Wunderink
1Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA.
Purpose Of Review:
To review the most recent data on severe Pseudomonas aeruginosa infections. The focus will be on clinical studies with an emphasis on the critically ill.
Recent Findings:
The frequency of P. aeruginosa as the etiologic agent of infections associated with high morbidity and mortality in hospitalized patients continues to increase. Unfortunately, pan-resistant isolates are now emerging as a significant clinical problem. Highly or pan-resistant isolates are associated with more frequent inappropriate initial therapy and increased mortality. Prevention relies on limitation of antibiotic pressure. Unfortunately, antibiotic class rotation has not resulted in persistent decreases in resistant isolates and the increased use of treatment protocols may actually increase selection.
Summary:
Because of the frequency of antibiotic resistance in clinical isolates of P. aeruginosa and the high associated mortality, combination, broad-spectrum antibiotic therapy should be used for empiric coverage of suspected P. aeruginosa infections. Accurate diagnostic testing can help to discontinue unnecessary antibiotics and decrease the overall selective pressure. Increasing resistance without new antibiotic classes on the horizon suggests the need for better use of available antibiotics and an emphasis on innovative treatment strategies in the future.
Insights
Severe Pseudomonas aeruginosa infections are increasing in hospitalized patients, with emerging pan-resistant strains leading to higher mortality. Early broad-spectrum antibiotic therapy and accurate diagnostics are crucial for managing these critical infections.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Antimicrobial Resistance
Background:
- Pseudomonas aeruginosa is a significant cause of hospital-acquired infections.
- Increasing rates of multidrug-resistant strains pose a growing clinical challenge.
- These infections are associated with substantial morbidity and mortality in hospitalized patients.
Purpose of the Study:
- To review recent clinical data on severe Pseudomonas aeruginosa infections.
- To focus on infections in critically ill patients.
- To highlight challenges posed by antimicrobial resistance.
Main Methods:
- Literature review of recent clinical studies.
- Analysis of data on Pseudomonas aeruginosa infection frequency and resistance patterns.
- Evaluation of treatment outcomes and prevention strategies.
Main Results:
- P. aeruginosa infections are increasing, with a rise in pan-resistant isolates.
- Pan-resistant strains are linked to higher rates of inappropriate initial therapy and increased mortality.
- Antibiotic class rotation has not effectively reduced resistant isolates; treatment protocols may increase selection pressure.
Conclusions:
- Empiric broad-spectrum antibiotic therapy is recommended for suspected P. aeruginosa infections due to resistance and mortality rates.
- Accurate diagnostics are vital to de-escalate antibiotic use and reduce selective pressure.
- Future strategies must focus on optimizing current antibiotic use and developing innovative treatments given the lack of new antibiotic classes.
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