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Updated: Jul 15, 2026

Experimental Model to Evaluate Resolution of Pneumonia
Published on: February 17, 2023
Pneumonia observational incidence and treatment: a multidisciplinary process improvement study
Jan Brozek1, Ellen McDonald, France Clarke
1Jagiellonian University School of Medicine and Polish Institute for Evidence Based Medicine, Krakow, Poland.
This study characterized pneumonia in intensive care unit (ICU) patients, finding most cases were community-acquired and caused by gram-positive bacteria. Improvement strategies focused on antibiotic use and information systems.
Area of Science:
- Critical Care Medicine
- Infectious Diseases
- Hospital Epidemiology
Background:
- Limited data exists on pneumonia types, causes, and treatments in intensive care unit (ICU) patients during routine clinical practice.
- Understanding these aspects is crucial for improving patient outcomes and optimizing resource allocation in critical care settings.
Purpose of the Study:
- To characterize the treatment of presumed pneumonia in a tertiary care ICU.
- To identify specific areas for enhancing patient care and management strategies.
Main Methods:
- A prospective cohort study was conducted over a 3-month period, including all consecutive ICU admissions.
- Data collected included pneumonia incidence, diagnostic investigations, microbial isolates, and prescribed antibiotics for patients with presumed pneumonia.
Main Results:
- Of 194 admissions, 73 patients received pneumonia treatment: 47 community-acquired, 12 hospital-acquired, 12 ventilator-associated, and 2 ICU-acquired.
- Microbiological tests were performed on approximately 71% of patients. Gram-positive bacteria (51.9%) were the most common isolates, followed by gram-negative bacteria (31.5%) and Candida species (9.3%).
- Quinolones and cephalosporins were the most frequently prescribed antimicrobials, with patients receiving a median of 3 antibiotics.
Conclusions:
- The majority of pneumonia cases in this ICU cohort were community-acquired, with gram-positive cocci being the predominant causative organisms.
- Recommended quality improvement strategies include rationalizing antibiotic use, enhancing culture result reporting, pharmacist review of antibiotic appropriateness, and redesigning clinical information systems.
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