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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 7 of 7 Research Studies DisplayedQureshi N, Kroger J, Zangwill KM
Changes in perceptions of antibiotic stewardship among neonatal intensive care unit providers over the course of a learning collaborative: a prospective, multisite, mixed-methods evaluation.
The purpose of this study was to assess clinician perceptions towards the value and implementation of antibiotic stewardship (AS) in neonatal intensive care units (NICU). The researchers conducted a mixed-methods study of AS perceptions utilizing surveys and interviews in 30 California NICUs before and after a multicenter collaborative (Optimizing Antibiotic Use in California NICUs [OASCN]). The study found that pre-OASCN, 24% of respondents believed there was "a lot of" or "some" inappropriate prescribing, often driven by fear of a bad outcome or hesitation to change existing practices. Clinicians reported statistically significant increases in AS importance, perceived AS activity, and more openness to change after OASCN.
AHRQ-funded; HS026168.
Citation: Qureshi N, Kroger J, Zangwill KM .
Changes in perceptions of antibiotic stewardship among neonatal intensive care unit providers over the course of a learning collaborative: a prospective, multisite, mixed-methods evaluation.
J Perinatol 2024 Jan; 44(1):62-70. doi: 10.1038/s41372-023-01823-0..
Keywords: Antibiotics, Antimicrobial Stewardship, Newborns/Infants, Intensive Care Unit (ICU), Critical Care
Flannery DD, Zevallos Barboza A, Mukhopadhyay S
Antibiotic use among infants admitted to neonatal intensive care units.
The purpose of this cross-sectional study was to examine antibiotic exposure, days of therapy, types of antibiotics, and changes in use patterns among newborns in neonatal intensive care units (NICUs) across the U.S. Data for almost 1.4 million infants were taken from the Premier Healthcare Database. The most common antibiotics prescribed during the study period were ampicillin, gentamicin, vancomycin, and cefotaxime. Antibiotic use declined substantially over time, primarily because of reductions in ampicillin and gentamicin. The authors noted that these findings probably reflect the penetration of national calls for neonatal antibiotic stewardship efforts and refined early-onset infection risk-assessment strategies; shortage and subsequent discontinuation of cefotaxime may have played a role in the sharp decline in its use and the related increase in ceftazidime use.
AHRQ-funded; HS027468.
Citation: Flannery DD, Zevallos Barboza A, Mukhopadhyay S .
Antibiotic use among infants admitted to neonatal intensive care units.
JAMA Pediatr 2023 Dec; 177(12):1354-56. doi: 10.1001/jamapediatrics.2023.3664..
Keywords: Newborns/Infants, Antibiotics, Medication, Intensive Care Unit (ICU), Critical Care
Sullivan BA, Panda A, Wallman-Stokes A
Antibiotic spectrum index: a new tool comparing antibiotic use in three NICUs.
This study looked at a new tool called the antibiotic spectrum index (ASI) which quantifies antibiotic exposure by relative antimicrobial activity, adding information to exposure measured by days of therapy (DOT). This index was tested with very low-birth-weight infants (VLBW, <1500g) in 3 level-4 NICUs for 2 years at 2 sites and for 1 year at a third site. The authors calculated the ASI per antibiotic days and DOT per patient days for all admitted VLBW infants <32 weeks gestational age. The site with the highest DOT per patient days was found to have the lowest ASI per antibiotic days and the site with the highest mortality and infection rates were found to have the highest ASI per antibiotic days. Antibiotic utilization varied by center.
AHRQ-funded; HS026742.
Citation: Sullivan BA, Panda A, Wallman-Stokes A .
Antibiotic spectrum index: a new tool comparing antibiotic use in three NICUs.
Infect Control Hosp Epidemiol 2022 Nov;43(11):1553-57. doi: 10.1017/ice.2021.467..
Keywords: Antibiotics, Medication, Newborns/Infants, Intensive Care Unit (ICU), Critical Care, Antimicrobial Stewardship
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
Chiotos K, Tamma PD, Gerber JS
Antibiotic stewardship in the intensive care unit: challenges and opportunities.
This study examined unique considerations and knowledge gaps in antibiotic stewardship intervention in the intensive care unit (ICU). There is limited data available, but the available data was summarized and included the impact of prospective audit and feedback, diagnostic test stewardship, rapid molecular diagnostic tests, and procalcitonin-guided algorithms for antibiotic discontinuation.
AHRQ-funded; HS026393.
Citation: Chiotos K, Tamma PD, Gerber JS .
Antibiotic stewardship in the intensive care unit: challenges and opportunities.
Infect Control Hosp Epidemiol 2019 Jun;40(6):693-98. doi: 10.1017/ice.2019.74..
Keywords: Antimicrobial Stewardship, Antibiotics, Intensive Care Unit (ICU), Critical Care, Antibiotics
Johnson JK, Robinson GL, Pineles LL
Carbapenem MICs in Escherichia coli and Klebsiella species producing extended-spectrum beta-lactamases in critical care patients from 2001 to 2009.
Carbapenem antibiotics are used as a first line of therapy against ESBL-producing Enterobacteriaceae. The researchers examined a cohort of critical care patients for gastrointestinal colonization with carbapenem-resistant ESBL-producing strains (CR-ESBL strains). They found that 10 percent of the isolates were resistant to at least one carbapenem antibiotic.
AHRQ-funded; HS021068.
Citation: Johnson JK, Robinson GL, Pineles LL .
Carbapenem MICs in Escherichia coli and Klebsiella species producing extended-spectrum beta-lactamases in critical care patients from 2001 to 2009.
Antimicrob Agents Chemother 2017 Apr;61(4):e01718-16. doi: 10.1128/aac.01718-16.
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Keywords: Antibiotics, Critical Care, Medication, Intensive Care Unit (ICU)