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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 4 of 4 Research Studies DisplayedChiotos K, Blumenthal J, Boguniewicz J
Antibiotic indications and appropriateness in the pediatric intensive care unit: a 10-center point prevalence study.
The purpose of this study was to describe indications and appropriateness of antibiotic orders in pediatric intensive care unit (PICU) patients. The study found that of 1462 patients admitted to participating PICUs, 58% had at least 1 antibiotic order, with 1277 antibiotic orders being reviewed. Common indications were empiric therapy for suspected bacterial infections without sepsis or septic shock, nonoperative prophylaxis, empiric therapy for sepsis or septic shock, community-acquired pneumonia, and post-operative prophylaxis. Appropriateness was evaluated for 985 orders for which an evidence-based heading for appropriateness could be created. Of these, 34% were categorized as inappropriate. Indications with the most orders classified as inappropriate were empiric therapy for suspected bacterial infection without sepsis or septic shock, sepsis or septic shock, CAP, ventilator-associated infections, and post-operative prophylaxis. The proportion of antibiotics classified as inappropriate differed across institutions.
AHRQ-funded; HS026393.
Citation: Chiotos K, Blumenthal J, Boguniewicz J .
Antibiotic indications and appropriateness in the pediatric intensive care unit: a 10-center point prevalence study.
Clin Infect Dis 2023 Feb 8; 76(3):e1021-e30. doi: 10.1093/cid/ciac698..
Keywords: Children/Adolescents, Intensive Care Unit (ICU), Antibiotics, Medication, Antimicrobial Stewardship, Sepsis
Chiotos K, Marshall D, Kellom K
Mixed-methods process evaluation of a respiratory-culture diagnostic stewardship intervention.
The purpose of this study was to perform an evaluation of a diagnostic stewardship initiative for respiratory culture in the healthcare setting within a pediatric intensive care unit (PICU) in a tertiary-care center. The study found that the frequency of culture collection per day of service differed among attending physicians, ranging from 2.2 to 27 cultures per 100 days. A total of 14 interviews were conducted, and 87 clinicians (response rate: 47%) along with 77 nurses or respiratory therapists (response rate: 17%) participated in the survey. There was a variation in clinicians' stated practices concerning culture ordering, which was influenced by both their specialty and their perception of the respiratory culture's usefulness. Additionally, group "default" practices, fear, and hierarchy affected the decision to order cultures. Obstacles to standardization encompassed concerns about missing a diagnosis and the conflict between standardized practices and individual judgment.
AHRQ-funded; HS026393.
Citation: Chiotos K, Marshall D, Kellom K .
Mixed-methods process evaluation of a respiratory-culture diagnostic stewardship intervention.
Infect Control Hosp Epidemiol 2023 Feb; 44(2):191-99. doi: 10.1017/ice.2022.299..
Keywords: Children/Adolescents, Diagnostic Safety and Quality, Antibiotics, Medication, Antimicrobial Stewardship, Intensive Care Unit (ICU)
Chiotos K, Fitzgerald JC, Hayes M
Improving vancomycin stewardship in critically ill children.
The purpose of this study was to describe a quality improvement intervention to reduce the use of vancomycin in a tertiary care Pediatric Intensive Care Unit. Over a period of 3 years, the researchers conducted 3 quality improvement (QI) interventions including 1) stakeholder education, 2) development of a consensus-based guideline for empiric vancomycin use, and 3) implementation of the guideline through clinical decision support. The study found that of 1276 episodes of suspected bacterial infection, a total of 19 cases of bacteremia (1.5%) due to organisms requiring vancomycin therapy were identified, including 6 MRSA bacteremias. Over the 3-year period of the QI project, overall vancomycin DOT per 1000 patient days in the PICU decreased from a baseline mean of 182 DOT per 1000 patient days to 109 DOT per 1000 patient days (a 40% reduction). The study concluded that the intervention reduced overall vancomycin use in the Pediatric Intensive Care Unit without evidence of harm.
AHRQ-funded; HS026393.
Citation: Chiotos K, Fitzgerald JC, Hayes M .
Improving vancomycin stewardship in critically ill children.
Pediatrics 2022 Apr;149(4):e2021052165. doi: 10.1542/peds.2021-052165..
Keywords: Children/Adolescents, Critical Care, Antimicrobial Stewardship, Antibiotics, Medication, Intensive Care Unit (ICU)
Woods-Hill CZ, Koontz DW, King AF
Practices, perceptions, and attitudes in the evaluation of critically ill children for bacteremia: a national survey.
Sending blood cultures in children at low risk of bacteremia can contribute to a cascade of unnecessary antibiotic exposure, adverse effects, and increased costs. In this study, the investigators aimed to describe practice variation, clinician beliefs, and attitudes about blood culture testing in critically ill children. They concluded that there is variation in blood culture practices in the pediatric ICU. Fear and reflexive habits are common drivers of cultures. These practices may contribute to over-testing for bacteremia.
AHRQ-funded; HS025642.
Citation: Woods-Hill CZ, Koontz DW, King AF .
Practices, perceptions, and attitudes in the evaluation of critically ill children for bacteremia: a national survey.
Pediatr Crit Care Med 2020 Jan;21(1):e23-e29. doi: 10.1097/pcc.0000000000002176..
Keywords: Children/Adolescents, Critical Care, Antimicrobial Stewardship, Antibiotics, Adverse Drug Events (ADE), Adverse Events, Patient Safety, Intensive Care Unit (ICU), Shared Decision Making