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Advani SD, Cawcutt K, Klompas M, Marschall J, Meddings J, Patel PK. The next frontier of healthcare-associated infection (HAI) surveillance metrics: Beyond device-associated infections. Infect Control Hosp Epidemiol 2024; 45:693-697. [PMID: 38221847 DOI: 10.1017/ice.2023.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
In recent years, it has become increasingly evident that surveillance metrics for invasive device-associated infections (ie, central-line-associated bloodstream infections, ventilator-associated pneumonias, and catheter-associated urinary tract infections) do not capture all harms; they capture only a subset of healthcare-associated infections (HAIs). Although prevention of device-associated infections remains critical, we need to address the full spectrum of potential harms from device use and non-device-associated infections. These include complications associated with additional devices, such as peripheral venous and arterial catheters, non-device-associated infections such as nonventilator hospital-acquired pneumonia, and noninfectious device complications such as trauma, thrombosis, and acute lung injury. As authors of the device-associated infection sections in the SHEA/IDSA/APIC Compendium of Strategies to Prevent Healthcare-Associated Infections in Acute Care Hospitals, we highlight catheter-associated urinary tract infection as an example of the strengths and limitations of the current emphasis on device-associated infection surveillance, suggest performance metrics that present a more comprehensive picture of patient harm, and provide a high-level overview of similar issues with other infection surveillance measures.
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Affiliation(s)
- Sonali D Advani
- Duke University School of Medicine, Durham, North Carolina, United States
| | - Kelly Cawcutt
- University of Nebraska Medical Center, Omaha, Nebraska, United States
| | - Michael Klompas
- Brigham and Women's Hospital and Harvard Medical School Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States
| | - Jonas Marschall
- Bern University Hospital, University of Bern, Bern, Switzerland
- Washington University School of Medicine, St. Louis, Missouri, United States
| | - Jennifer Meddings
- University of Michigan Medical School, Veterans' Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan, United States
| | - Payal K Patel
- Intermountain Healthcare, Salt Lake City, Utah, United States
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Cohen R, Tannous E, Natan OB, Vaknin A, Ganayem M, Reisfeld S, Lipman-Arens S, Mahamid L, Ishay L, Karisi E, Melnik N, Leibel M, Ashkar J, Freimann S. An emergency department intervention to improve earlier detection of community-onset bloodstream infection among hospitalized patients. Am J Infect Control 2024; 52:664-669. [PMID: 38232901 DOI: 10.1016/j.ajic.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
BACKGROUND Blood cultures (BCs) are essential microbiologic tests, but blood culturing diagnostic stewardship is frequently poor. We aimed to study the process-related failures and to evaluate the effect of an emergency department (ED) intervention on BCs collection practices and yield. METHODS We implemented an ED-quality improvement intervention including educational sessions, phlebotomists addition, promoting single-site strategy for BC-collection and preanalytical data feedback. BC-bottles collected, positive BCs, blood volumes and documentation of collection times were measured, before (December 2021-August 2022) and after (September 2022-July 2023) intervention. Results were corrected to hospitalizations admissions or days. We used interrupted-time series analyses for comparisons. RESULTS A total of 64,295 BC bottles were evaluated, 26,261 before and 38,034 postintervention. The median ED-BCs collected per week increased from 88 to 105 BCs (P < .0001), resulting from increased early sampling (P = .0001). Solitary BCs decreased (95%-28%), documented times increased (2.8%-25%), and average blood volume increased (3 mL to 4.5 mL) postintervention. Community-onset Bloodstream infections (BSIs) increased (39.6-52 bottles/1,000 admissions, P = .0001), while Health care-associated BSIs decreased (39-27 bottles/10,000 days, P = .0042). Contamination rates did not change. CONCLUSIONS An ED-focused intervention based on the education sessions and single-site strategy improved culturing stewardship and facilitated the early identification of BSI without an increase in contamination.
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Affiliation(s)
- Regev Cohen
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Elias Tannous
- Pharmacy Department, Hillel Yaffe Medical Centre, Hadera, Israel; Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Orna Ben Natan
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Aliza Vaknin
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Mohammed Ganayem
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Sharon Reisfeld
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Shelly Lipman-Arens
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Lamis Mahamid
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Linor Ishay
- Infection Control and Infectious Diseases Units, Hillel Yaffe Medical Centre, Hadera, Israel; Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Erez Karisi
- Information Technology Department, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Noa Melnik
- Information Technology Department, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Mira Leibel
- Emergency Department, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Jalal Ashkar
- Emergency Department, Hillel Yaffe Medical Centre, Hadera, Israel
| | - Sarit Freimann
- Department of Laboratories, Clinical Microbiology Laboratory, Hillel Yaffe Medical Centre, Hadera, Israel
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Ciccacci F, De Santo C, Mosconi C, Orlando S, Carestia M, Guarente L, Liotta G, Palombi L, Emberti Gialloreti L. Not only COVID-19: a systematic review of anti-COVID-19 measures and their effect on healthcare-associated infections. J Hosp Infect 2024; 147:133-145. [PMID: 38423132 DOI: 10.1016/j.jhin.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Healthcare-associated infections (HAIs) burden healthcare globally. Amid the SARS-CoV-2 pandemic, intensified infection control measures, such as mask usage and hand hygiene, were implemented. AIM To assess the efficacy of these measures in preventing HAIs among hospitalized patients. METHODS Using the PICO framework (Population, Intervention, Comparison, Outcome), the study focused on hospitalized patients and the effectiveness of anti-COVID-19 measures in preventing HAIs. A systematic review of literature published in 2020-2022 was conducted, examining interventions such as mask usage, hand hygiene, and environmental cleaning. FINDINGS This systematic review analysed 42 studies: two in 2020, 21 in 2021, and 19 in 2022. Most studies were from high-income countries (28). Most studies (30 out of 42) reported a reduction in HAIs after implementing anti-COVID-19 measures. Gastrointestinal infections and respiratory tract infections showed significant reduction, unlike bloodstream infections and urinary tract infections. Some wards, like cardiology and neurology, experienced reduced HAIs, unlike intensive care units and coronary care units. There was an increase in studies reporting no effect of hygiene measures on HAIs in 2022, eventually indicating a shift in effectiveness over time. CONCLUSION Anti-COVID-19 measures have shown selective efficacy in preventing HAIs. The study emphasizes the need for context-specific strategies and increased focus on regions with limited resources. Continued research is essential to refine infection control practices, especially in high-risk settings.
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Affiliation(s)
- F Ciccacci
- Departmental Faculty of Medicine and Surgery, Saint Camillus International University of Health and Medical Sciences, Rome, Italy
| | - C De Santo
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - C Mosconi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - S Orlando
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy.
| | - M Carestia
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - L Guarente
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - G Liotta
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
| | - L Palombi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy; Catholic University Our Lady of Good Counsel, Tirana, Albania
| | - L Emberti Gialloreti
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
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Hills AZ, Ray M, Williams J, Greenslade J. Benchmarking blood culture quality in the emergency department: Contamination, single sets and positivity. Emerg Med Australas 2024; 36:206-212. [PMID: 37845807 DOI: 10.1111/1742-6723.14330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/18/2023]
Abstract
OBJECTIVE To benchmark blood culture (BC) quality in an Australian ED, explore groups at risk of suboptimal BC collection, and identify potential areas for improvement. METHODS This retrospective observational study was undertaken to benchmark quality of BCs in a tertiary adult ED in terms of number of BC sets per patient and proportion of patients with false positive (contaminated) BC results. RESULTS A single BC set was taken for 55% of patients, with lower acuity patients being more likely to have a single BC set taken. BC false positives occurred in 3.4% of presentations, with higher frequency in some critically unwell patient groups. The true positive BC rate was 10.9%, with pathogens most frequently isolated in older patients, those with a haematological condition or genitourinary source, and those admitted to inpatient wards. Hospital length of stay did not differ between patients with negative and patients with false positive BCs. CONCLUSIONS BC quality standards in the ED such as false positive rate <3% and single culture rate <20% are required to facilitate benchmarking and prospective quality improvement. The sensitivity and specificity of this common and critical test can be improved. Patient subgroups associated with poor-quality BC collection can be identified and should be a focus of future work.
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Affiliation(s)
- Angela Z Hills
- Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Mercedes Ray
- Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Julian Williams
- Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
- Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Jaimi Greenslade
- Emergency and Trauma Centre, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
- Australian Centre for Health Services Innovation, Centre for Healthcare Transformation, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
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Palavecino EL, Campodónico VL, She RC. Laboratory approaches to determining blood culture contamination rates: an ASM Laboratory Practices Subcommittee report. J Clin Microbiol 2024; 62:e0102823. [PMID: 38051070 PMCID: PMC10865823 DOI: 10.1128/jcm.01028-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023] Open
Abstract
Blood culture contamination (BCC) is the presence of specific commensal and environmental organisms cultivated from a single blood culture set out of a blood culture series and that do not represent true bacteremia. BCC can impact quality of care and lead to negative outcomes, unnecessary antibiotic exposure, prolonged hospital stays, and substantial costs. As part of the laboratory's quality management plan, microbiology laboratory personnel are tasked with monitoring BCC rates, preparing BCC rate reports, and providing feedback to the appropriate committees within their healthcare system. The BCC rate is calculated by the laboratory using pre-set criteria. However, pre-set criteria are not universally defined and depend on the individual institution's patient population and practices. This mini-review provides practical recommendations on elaborating BCC rate reports, the parameters to define for the pre-set criteria, how to collect and interpret the data, and additional analysis to include in a BCC report.
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Affiliation(s)
- Elizabeth L. Palavecino
- Department of Pathology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA
| | - Victoria L. Campodónico
- Department of Pathology, Division of Medical Microbiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rosemary C. She
- Department of Pathology, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA
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Yu J, Zhang L, Gao D, Wang J, Li Y, Sun N. Comparison of metagenomic next-generation sequencing and blood culture for diagnosis of bloodstream infections. Front Cell Infect Microbiol 2024; 14:1338861. [PMID: 38328669 PMCID: PMC10847245 DOI: 10.3389/fcimb.2024.1338861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/08/2024] [Indexed: 02/09/2024] Open
Abstract
Objectives This study aimed to evaluate the clinical performance of plasma cell-free DNA (cfDNA) next-generation sequencing (NGS) for pathogen detection in patients with sepsis. Methods A total of 43 pairs of blood and plasma samples form 33 blood culture-positive patients were used as testing samples in metagenomic NGS (mNGS) and NGS of 16S ribosomal RNA gene amplicons (16S rRNA NGS). The results of routine tests, including microbial culture, complete blood count, and biochemical tests, were collected from electronic medical records. Results Using blood as an mNGS testing sample, the proportion of host DNA was 99.9%, with only three bacteria and no fungi detected. When using plasma in mNGS, the proportion of host DNA was approximately 97%, with 84 bacteria and two fungi detected. Notably, 16S rRNA NGS detected 15 and 16 bacteria in 43 pairs of blood and plasma samples, respectively. Blood culture detected 49 bacteria (23 gram-negative bacilli and 26 gram-positive cocci) and four fungi, with 14 bacteria considered contaminants by clinical microbiologists. For all blood cultures, plasma cfDNA mNGS detected 78.26% (19/23) gram-negative rods, 17% (2/12) gram-positive cocci, and no fungi. Compared to blood cultures, the sensitivity and specificity of plasma cfDNA mNGS for detecting bacteria and fungi were 62.07% and 57.14%, respectively. Conclusion Compared to blood, plasma is more suitable for the detection of bloodstream infections using mNGS and is less affected by host DNA. The positive detection rate of plasma cfDNA mNGS for bloodstream infections caused by gram-negative bacteria was higher than that caused by gram-positive cocci.
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Affiliation(s)
- Juan Yu
- Department of Clinical Laboratory, Nanjing Lishui People’s Hospital, Nanjing, China
- Department of Clinical Laboratory Science, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Li Zhang
- Department of Clinical Laboratory, Nanjing Lishui People’s Hospital, Nanjing, China
| | - Deyu Gao
- Department of Clinical Laboratory Science, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Jie Wang
- Clinical Medicine Research Center, The Affiliated Suqian First People’s Hospital of Nanjing Medical University, Suqian, China
| | - Yi Li
- Department of Clinical Laboratory Science, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Ning Sun
- Department of Clinical Laboratory Science, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
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Nakayama I. Response. Chest 2024; 165:e24. [PMID: 38199742 DOI: 10.1016/j.chest.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 08/08/2023] [Indexed: 01/12/2024] Open
Affiliation(s)
- Izumi Nakayama
- Department of Public Health, Yokohama City University School of Medicine, Yokohama, Japan.
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Pehlivan J, Douillet D, Jérémie R, Perraud C, Niset A, Eveillard M, Chenouard R, Mahieu R. A clinical decision rule to rule out bloodstream infection in the emergency department: retrospective multicentric observational cohort study. Emerg Med J 2023; 41:20-26. [PMID: 37940371 DOI: 10.1136/emermed-2022-212987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 10/27/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND We aimed to identify patients at low risk of bloodstream infection (BSI) in the ED. METHODS We derived and validated a prediction model to rule out BSI in the ED without the need for laboratory testing by determining variables associated with a positive blood culture (BC) and assigned points according to regression coefficients. This retrospective study included adult patients suspected of having BSI (defined by at least one BC collection) from two European ED between 1 January 2017 and 31 December 2019. The primary end point was the BSI rate in the validation cohort for patients with a negative Bacteremia Rule Out Criteria (BAROC) score. The effect of adding laboratory variables to the model was evaluated as a second step in a two-step diagnostic strategy. RESULTS We analysed 2580 patients with a mean age of 64 years±21, of whom 46.1% were women. The derived BAROC score comprises 12 categorical clinical variables. In the validation cohort, it safely ruled out BSI without BCs in 9% (58/648) of patients with a sensitivity of 100% (95% CI 95% to 100%), a specificity of 10% (95% CI 8% to 13%) and a negative predictive value of 100% (95% CI 94% to 100%). Adding laboratory variables (creatinine ≥177 µmol/L (2.0 mg/dL), platelet count ≤150 000/mm3 and neutrophil count ≥12 000/mm3) to the model, ruled out BSI in 10.2% (58/570) of remaining patients who had been positive on the BAROC score. The BAROC score with laboratory results had a sensitivity of 100% (95% CI 94% to 100%), specificity of 11% (95% CI 9% to 14%) and negative predictive value of 100% (95% CI 94 to 100%). In the validation cohort, there was no evidence of a difference in discrimination between the area under the receiver operating characteristic for BAROC score with versus without laboratory testing (p=0.6). CONCLUSION The BAROC score safely identified patients at low risk of BSI and may reduce BC collection in the ED without the need for laboratory testing.
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Affiliation(s)
- Jonathan Pehlivan
- Service de maladies infectieuses et tropicales, Centre hospitalier universitaire d'Angers, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Delphine Douillet
- Emergency Department, Angers University Hospital, CHU Angers, Angers, France
- UMR MitoVasc CNRS 6015-INSERM 1083, University of Angers, Angers, France
| | - Riou Jérémie
- Micro et Nano médecines translationnelles, MINT, UMR INSERM 1066, UMR CNRS 6021, University of Angers, Angers, France
- Methodology and Biostatistics Department, Delegation to Clinical Research and Innovation, Angers University Hospital, CHU Angers, Angers, France
| | - Clément Perraud
- Emergency Department, Angers University Hospital, CHU Angers, Angers, France
| | - Alexandre Niset
- Emergency Department, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Hopital à Bruxelles-Cliniques universitaires Saint-Luc, Bruxelles, Belgium
| | - Matthieu Eveillard
- Laboratoire de Bactériologie, Institut de Biologie en Santé-PBH, CHU Angers, Angers, France
| | - Rachel Chenouard
- Laboratoire de Bactériologie, Institut de Biologie en Santé-PBH, CHU Angers, Angers, France
| | - Rafael Mahieu
- Service de maladies infectieuses et tropicales, Centre hospitalier universitaire d'Angers, CHU Angers Maladies infectieuses et tropicales, Angers, France
- Faculty of Medicine, Université de Nantes, Inserm, CRCINA, SFR ICAT, University of Angers, Angers, France
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Pogorzelska-Maziarz M, de Cordova PB, Manning ML, Johansen ML, Grafova I, Gerolamo A. Voices from frontline nurses on care quality and patient safety during COVID-19: An application of the Donabedian model. Am J Infect Control 2023; 51:1295-1301. [PMID: 37625547 DOI: 10.1016/j.ajic.2023.08.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 08/27/2023]
Abstract
BACKGROUND The COVID-19 pandemic has adversely impacted quality of care and patient safety. This study aimed to describe registered nurses' (RNs) perceptions on the impact of the COVID-19 pandemic on their ability to adhere to patient safety protocols using Donabedian's Health Care Quality model. METHODS In October 2020, a survey was conducted among all actively licensed RNs in New Jersey who provided direct patient care during the first peak of COVID-19. RESULTS Of 3,027 participants, 68% reported that the number of patients assigned impacted their ability to adhere to protocols. RNs identified a variety of organizational structures impacting adherence, including inadequate staffing, staff qualifications, and inadequate resources. Impacted processes included the inability to adhere to patient safety protocols and conduct comprehensive assessments and surveillance, the need for additional time spent on personal protective equipment and isolation policies, and difficulty maintaining isolation integrity; the need to prioritize and cluster care; and guidelines limiting personnel who could enter the room. Nurses attributed both adverse patient and staff outcomes to inadequate staffing and high patient acuity. CONCLUSIONS These findings highlight the need for health care organizations to support frontline nursing staff in adhering to patient safety and infection prevention and control protocols during times of crises. Infection preventionists have substantial contact with bedside nurses and should leverage their collegial relationships to promote patient safety.
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Affiliation(s)
| | | | - Mary Lou Manning
- Thomas Jefferson University College of Nursing, Philadelphia, PA
| | - Mary L Johansen
- Rutgers University, Biomedical and Health Sciences, Newark, NJ
| | - Irina Grafova
- Rutgers University, Edward J. Bloustein School of Planning & Public Policy, New Brunswick, NJ
| | - Angela Gerolamo
- Thomas Jefferson University College of Nursing, Philadelphia, PA
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Ku TSN, Al Mohajer M, Newton JA, Wilson MH, Monsees E, Hayden MK, Messacar K, Kisgen JJ, Diekema DJ, Morgan DJ, Sifri CD, Vaughn VM. Improving antimicrobial use through better diagnosis: The relationship between diagnostic stewardship and antimicrobial stewardship. Infect Control Hosp Epidemiol 2023; 44:1901-1908. [PMID: 37665212 DOI: 10.1017/ice.2023.156] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Antimicrobial stewardship programs (ASPs) exist to optimize antibiotic use, reduce selection for antimicrobial-resistant microorganisms, and improve patient outcomes. Rapid and accurate diagnosis is essential to optimal antibiotic use. Because diagnostic testing plays a significant role in diagnosing patients, it has one of the strongest influences on clinician antibiotic prescribing behaviors. Diagnostic stewardship, consequently, has emerged to improve clinician diagnostic testing and test result interpretation. Antimicrobial stewardship and diagnostic stewardship share common goals and are synergistic when used together. Although ASP requires a relationship with clinicians and focuses on person-to-person communication, diagnostic stewardship centers on a relationship with the laboratory and hardwiring testing changes into laboratory processes and the electronic health record. Here, we discuss how diagnostic stewardship can optimize the "Four Moments of Antibiotic Decision Making" created by the Agency for Healthcare Research and Quality and work synergistically with ASPs.
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Affiliation(s)
- Tsun Sheng N Ku
- Billings Clinic, Billings, Montana
- Rocky Vista University Montana College of Osteopathic Medicine, Billings, Montana
| | - Mayar Al Mohajer
- Section of Infectious Diseases, Department of Medicine, Baylor College of Medicine, Houston, Texas
- Infectious Diseases Section, Baylor St. Luke's Medical Center, Houston, Texas
- Infection Prevention, Diagnostic Stewardship and Antibiotic Stewardship, CommonSpirit Health Texas Division, Houston, Texas
| | - James A Newton
- Department of Antibiotic Stewardship, Washington Regional Medical Center, Fayetteville, Arkansas
| | - Marie H Wilson
- Infection Prevention & Control, Fred Hutchinson Cancer Center, Seattle, Washington
| | - Elizabeth Monsees
- Performance Excellence, Children's Mercy Hospital, Kansas City, Missouri
- University of Missouri School of Medicine, Kansas City, Missouri
| | - Mary K Hayden
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois
| | - Kevin Messacar
- Department of Pediatrics, Section of Infectious Diseases, University of Colorado/Children's Hospital Colorado, Aurora, Colorado
| | | | - Daniel J Diekema
- Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa
- Maine Medical Center, Portland, Maine
| | - Daniel J Morgan
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
- VA Maryland Healthcare System, Baltimore, Maryland
| | - Costi D Sifri
- University of Virginia School of Medicine, Charlottesville, Virginia
| | - Valerie M Vaughn
- Division of General Internal Medicine, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah
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11
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Lefrak L, Schaffer KE, Bohnert J, Mendel P, Payton KSE, Lee HC, Bolaris MA, Zangwill KM. Blood culture procedures and practices in the neonatal intensive care unit: A survey of a large multicenter collaborative in California. Infect Control Hosp Epidemiol 2023; 44:1576-1581. [PMID: 36924050 DOI: 10.1017/ice.2023.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
OBJECTIVE To describe variation in blood culture practices in the neonatal intensive care unit (NICU). DESIGN Survey of neonatal practitioners involved with blood culturing and NICU-level policy development. PARTICIPANTS We included 28 NICUs in a large antimicrobial stewardship quality improvement program through the California Perinatal Quality Care Collaborative. METHODS Web-based survey of bedside blood culture practices and NICU- and laboratory-level practices. We evaluated adherence to recommended practices. RESULTS Most NICUs did not have a procedural competency (54%), did not document the sample volume (75%), did not receive a culture contamination report (57%), and/or did not require reporting to the provider if <1 mL blood was obtained (64%). The skin asepsis procedure varied across NICUs. Only 71% had a written procedure, but ≥86% changed the needle and disinfected the bottle top prior to inoculation. More than one-fifth of NICUs draw a culture from an intravascular device only (if present). Of 13 modifiable practices related to culture and contamination, NICUs with nurse practitioners more frequently adopted >50% of practices, compared to units without (92% vs 50% of units; P < .02). CONCLUSIONS In the NICU setting, recommended practices for blood culturing were not routinely performed.
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Affiliation(s)
- Linda Lefrak
- Nurse Consultant, State of California Department of Public Health, Center for Health Care Quality, Healthcare-Associated Infections Program, Sacramento, California
| | - Kristen E Schaffer
- California Perinatal Quality Care Collaborative, Palo Alto, California
- Division of Neonatology, Stanford University, Palo Alto, California
| | - Janine Bohnert
- California Perinatal Quality Care Collaborative, Palo Alto, California
- Division of Neonatology, Stanford University, Palo Alto, California
| | | | - Kurlen S E Payton
- California Perinatal Quality Care Collaborative, Palo Alto, California
- Division of Neonatology, Department of Pediatrics, Cedars-Sinai Medical Center, Los Angeles, California
| | - Henry C Lee
- California Perinatal Quality Care Collaborative, Palo Alto, California
- Division of Neonatology, Stanford University, Palo Alto, California
| | - Michael A Bolaris
- Department of Pediatrics, Rancho Los Amigos Rehabilitation Center, Downey, California
| | - Kenneth M Zangwill
- Division of Pediatric Infectious Diseases, Department of Infection Prevention and Control, Harbor-UCLA Medical Center and The Lundquist Institute at Harbor-UCLA Medical Center, Torrance, California
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Ohta R, Sano C. Factors Associated With Blood Culture Contamination in Rural Hospitals in Japan: A Cross-Sectional Study. Cureus 2023; 15:e47987. [PMID: 38034244 PMCID: PMC10685058 DOI: 10.7759/cureus.47987] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Background Blood culture, a cornerstone diagnostic test, is paramount for identifying bacteremia due to serious infections. However, its accuracy is jeopardized by contamination, often due to inappropriate collection procedures. Resource constraints and a limitation in specialized staff can heighten contamination risks in rural hospitals, underscoring the need to understand the associated demographics and conditions. This study aimed to elucidate the demographics and conditions associated with heightened blood culture contamination risk in rural hospitals to optimize testing practices and improve patient care. Methods A single-center, cross-sectional study was conducted in Unnan City Hospital, Unnan, Japan with participants suspected of having bacteremia. Data from the electronic medical records of 455 patients were analyzed using multivariate logistic regression with contamination as the dependent variable. Results Of the 455 patients who underwent blood culture testing, 321 and 134 tests were negative and positive for contamination, respectively. Older age and blood obtained from arteries were associated with a reduced risk of contamination (odds ratio (OR)=0.97; p=0.012, and OR=0.17; p=0.00069, respectively). Patients with dependencies exhibited an increase in contamination risk (OR=1.81; p=0.044). Patients admitted for infection demonstrated a reduced likelihood of sample contamination (OR=0.44; p=0.0034). The predominant organisms identified varied, with Escherichia coli being more frequent in uncontaminated blood samples and Staphylococcus epidermidis in the contaminated samples. Conclusion This study reveals a complex relationship between patient demographics, clinical practices, and the risk of contamination. Factors such as age, dependency status, and reason for admission were associated with sample contamination. Enhanced procedural stringency, microbial surveillance, and continuous training could mitigate these risks, particularly in resource-constrained settings. Identifying and understanding the factors influencing blood culture contamination can significantly bolster clinical practice in rural settings. While this study provides foundational insights, future research can deepen our understanding, ensuring the refinement of patient care protocols in similar environments.
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Affiliation(s)
| | - Chiaki Sano
- Community Medicine Management, Shimane University Faculty of Medicine, Izumo, JPN
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Abu-Khudir R, Hafsa N, Badr BE. Identifying Effective Biomarkers for Accurate Pancreatic Cancer Prognosis Using Statistical Machine Learning. Diagnostics (Basel) 2023; 13:3091. [PMID: 37835833 PMCID: PMC10572229 DOI: 10.3390/diagnostics13193091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/08/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023] Open
Abstract
Pancreatic cancer (PC) has one of the lowest survival rates among all major types of cancer. Consequently, it is one of the leading causes of mortality worldwide. Serum biomarkers historically correlate well with the early prognosis of post-surgical complications of PC. However, attempts to identify an effective biomarker panel for the successful prognosis of PC were almost non-existent in the current literature. The current study investigated the roles of various serum biomarkers including carbohydrate antigen 19-9 (CA19-9), chemokine (C-X-C motif) ligand 8 (CXCL-8), procalcitonin (PCT), and other relevant clinical data for identifying PC progression, classified into sepsis, recurrence, and other post-surgical complications, among PC patients. The most relevant biochemical and clinical markers for PC prognosis were identified using a random-forest-powered feature elimination method. Using this informative biomarker panel, the selected machine-learning (ML) classification models demonstrated highly accurate results for classifying PC patients into three complication groups on independent test data. The superiority of the combined biomarker panel (Max AUC-ROC = 100%) was further established over using CA19-9 features exclusively (Max AUC-ROC = 75%) for the task of classifying PC progression. This novel study demonstrates the effectiveness of the combined biomarker panel in successfully diagnosing PC progression and other relevant complications among Egyptian PC survivors.
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Affiliation(s)
- Rasha Abu-Khudir
- Chemistry Department, College of Science, King Faisal University, P.O. Box 380, Hofuf 31982, Al-Ahsa, Saudi Arabia
- Chemistry Department, Biochemistry Branch, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Noor Hafsa
- Computer Science Department, College of Computer Science and Information Technology, King Faisal University, P.O. Box 400, Hofuf 31982, Al-Ahsa, Saudi Arabia;
| | - Badr E. Badr
- Egyptian Ministry of Labor, Training and Research Department, Tanta 31512, Egypt;
- Botany Department, Microbiology Unit, Faculty of Science, Tanta University, Tanta 31527, Egypt
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14
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Callado GY, Lin V, Thottacherry E, Marins TA, Martino MDV, Salinas JL, Marra AR. Diagnostic Stewardship: A Systematic Review and Meta-analysis of Blood Collection Diversion Devices Used to Reduce Blood Culture Contamination and Improve the Accuracy of Diagnosis in Clinical Settings. Open Forum Infect Dis 2023; 10:ofad433. [PMID: 37674630 PMCID: PMC10478151 DOI: 10.1093/ofid/ofad433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/09/2023] [Indexed: 09/08/2023] Open
Abstract
Background Blood culture contamination may lead to misdiagnosis, overutilization of antibiotics, and prolonged length of stay. Blood specimen diversion devices can reduce contamination rates during blood culture collection procedures. We performed a systematic literature review and meta-analysis evaluating the influence of blood specimen diversion devices in blood culture contamination rates. Methods We searched Medline, Cumulative Index to Nursing and Allied Health Literature, Embase, Cochrane, Scopus, and Web of Science, from database inception to 1 March 2023, for studies evaluating the impact of a diversion device on blood culture contamination. Blood culture contamination was a positive blood culture with microorganisms not representative of true bacteremia, but rather introduced during collection or processing the blood sample. Random-effects models were used to obtain pooled mean differences, and heterogeneity was assessed using the I2 test. Results Of 1768 screened studies, 12 met inclusion criteria for this systematic literature review. Of them, 9 studies were included in the meta-analysis. Studies were substantially heterogeneous, but stratified analyses considering only high-quality studies revealed that venipuncture using a diversion device was associated with a significant reduction in blood culture contamination in comparison to the standard procedure of collection (pooled odds ratio [OR], 0.26 [95% confidence interval {CI}, .13-.54]; I2 = 19%). Furthermore, the stratified analysis showed that the adoption of a diversion device did not reduce the detection of true infection (pooled OR, 0.85 [95% CI, .65-1.11]; I2 = 0%). Conclusions Blood culture diversion devices was associated with decreased contamination rates and could improve quality of care, reduce costs, and avoid unnecessary antibiotic use.
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Affiliation(s)
- Gustavo Yano Callado
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, São Paulo, Brazil
| | - Vivian Lin
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, São Paulo, Brazil
| | - Elizabeth Thottacherry
- Division of Infectious Diseases & Geographic Medicine, Stanford University, Stanford, California, USA
| | - Tássia Aporta Marins
- Faculdade de Medicina, Centro Universitário de Adamantina, Adamantina, São Paulo, Brazil
| | - Marinês Dalla Valle Martino
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, São Paulo, Brazil
| | - Jorge L Salinas
- Division of Infectious Diseases & Geographic Medicine, Stanford University, Stanford, California, USA
| | - Alexandre R Marra
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Hospital Israelita Albert Einstein, São Paulo, São Paulo, Brazil
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA
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15
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Aiesh BM, Daraghmeh D, Abu-Shamleh N, Joudallah A, Sabateen A, Al Ramahi R. Blood culture contamination in a tertiary care hospital: a retrospective three-year study. BMC Infect Dis 2023; 23:448. [PMID: 37403044 DOI: 10.1186/s12879-023-08428-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 06/26/2023] [Indexed: 07/06/2023] Open
Abstract
BACKGROUND Bloodstream infections (BSI) are a leading cause of morbidity and mortality in hospitalized patients worldwide. A blood culture is the primary tool for determining whether a patient has BSI and requires antimicrobial therapy, but it can result in an inappropriate outcome if the isolated microorganisms are deemed contaminants from the skin. Despite the development of medical equipment and technology, there is still a percentage of blood culture contamination. The aims of this study were to detect the blood culture contamination (BCC) rate in a tertiary care hospital in Palestine and to identify the departments with the highest rates along with the microorganisms isolated from the contaminated blood samples. METHOD Blood cultures that were taken at An-Najah National University Hospital between January 2019 and December 2021 were evaluated retrospectively. Positive blood cultures were classified as either true positives or false positives based on laboratory results and clinical pictures. Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS) version 21. A p-value of less than 0.05 was considered statistically significant for all analyses. RESULTS Out of 10,930 blood cultures performed in the microbiology laboratory from 2019 to 2021, 1479 (13.6%) were identified as positive blood cultures that showed microbial growth. Of these, 453 were blood culture contaminations, representing 4.17% of total blood cultures and 30.63% of the positive blood culture samples. The highest rate of contamination was in the hemodialysis unit (26.49%), followed by the emergency department (15.89%). Staphylococcus epidermidis was the most prevalent (49.2%), followed by Staphylococcus hominis (20.8%) and Staphylococcus haemolyticus (13.2%). The highest annual contamination rate was observed in 2019 (4.78%) followed by 2020 (3.95%) and the lowest was in 2021 (3.79%). The rate of BCC was decreasing, although it did not reach statistically significant levels (P value = 0.085). CONCLUSION The rate of BCC is higher than recommended. The rates of BCC are different in different wards and over time. Continuous monitoring and performance improvement projects are needed to minimize blood culture contamination and unnecessary antibiotic use.
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Affiliation(s)
- Banan M Aiesh
- Infection Control Department, An-Najah National University Hospital, Nablus, Palestine
| | - Duha Daraghmeh
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Nasreen Abu-Shamleh
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Abdalmenem Joudallah
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Ali Sabateen
- Infection Control Department, An-Najah National University Hospital, Nablus, Palestine
| | - Rowa' Al Ramahi
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
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Nakayama I, Izawa J, Gibo K, Murakami S, Akiyama T, Kotani Y, Katsurai R, Kishihara Y, Tsuchida T, Takakura S, Takayama Y, Narita M, Shiiki S. Contamination of Blood Cultures From Arterial Catheters and Peripheral Venipuncture in Critically Ill Patients: A Prospective Multicenter Diagnostic Study. Chest 2023; 164:90-100. [PMID: 36731787 DOI: 10.1016/j.chest.2023.01.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/05/2023] [Accepted: 01/18/2023] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Collecting blood cultures from indwelling arterial catheters is an attractive option in critically ill adult patients when peripheral venipuncture is difficult. However, whether the contamination proportion of blood cultures from arterial catheters is acceptable compared with that from venipuncture is inconclusive. RESEARCH QUESTION Is contamination of blood cultures from arterial catheters noninferior to that from venipuncture in critically ill adult patients with suspected bloodstream infection? STUDY DESIGN AND METHODS In this multicenter prospective diagnostic study conducted at five hospitals, we enrolled episodes of paired blood culture collection, each set consisting of blood drawn from an arterial catheter and another by venipuncture, were obtained from critically ill adult patients with cilinical indication. The primary measure was the proportion of contamination, defined as the number of false-positive results relative to the total number of procedures done. The reference standard for true bloodstream infection was blinded assessment by infectious disease specialists. We examined the noninferiority hypothesis that the contamination proportion of blood cultures from arterial catheters did not exceed that from venipuncture by 2.0%. RESULTS Of 1,655 episodes of blood culture from December 2018 to July 2021, 590 paired blood culture episodes were enrolled, and 41 of the 590 episodes (6.9%) produced a true bloodstream infection. In blood cultures from arterial catheters, 33 of 590 (6.0%) were positive, and two of 590 (0.3%) were contaminated; in venipuncture, 36 of 590 (6.1%) were positive, and four of 590 (0.7%) were contaminated. The estimated difference in contamination proportion (arterial catheter - venipuncture) was -0.3% (upper limit of one-sided 95% CI, +0.3%). The upper limit of the 95% CI did not exceed the predefined margin of +2.0%, establishing noninferiority (P for noninferiority < .001). INTERPRETATION Obtaining blood cultures from arterial catheters is an acceptable alternative to venipuncture in critically ill patients. CLINICAL TRIAL REGISTRATION University Hospital Medical Information Network Center (UMIN-CTR); No.: UMIN000035392; URL: https://center6.umin.ac.jp/.
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Affiliation(s)
- Izumi Nakayama
- Division of Intensive Care Medicine, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan; Department of Public Health, School of Medicine, Yokohama City University, Yokohama, Japan; Department of Health Data Science, Graduate School of Data Science, Yokohama City University, Yokohama, Japan.
| | - Junichi Izawa
- Division of Intensive Care Medicine, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan; Department of Preventive Services, Kyoto University School of Public Health, Kyoto, Japan
| | - Koichiro Gibo
- Department of Emergency Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan; Department of Home Care Medicine, Nishizaki Hospital, Itoman, Japan
| | - Sara Murakami
- Department of Critical Care Medicine, Sakai City Medical Center, Sakai, Japan
| | - Taisuke Akiyama
- Department of Critical Care Medicine, Sakai City Medical Center, Sakai, Japan
| | - Yuki Kotani
- Department of Intensive Care Medicine, Kameda Medical Center, Kamogawa, Japan
| | - Rie Katsurai
- Department of Intensive Care Medicine, Kameda Medical Center, Kamogawa, Japan
| | - Yuki Kishihara
- Emergency and Critical Care Medicine, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Takahiro Tsuchida
- Department of Anesthesia and Critical Care, Kobe City Medical Center General Hospital, Kobe, Japan
| | - Shunichi Takakura
- Division of Infectious Diseases, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan
| | - Yoshihiro Takayama
- Division of Infectious Diseases, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan
| | - Masashi Narita
- Division of Infectious Diseases, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan; Division of Infectious Diseases, Department of Internal Medicine, Okinawa Prefectural Nanbu Medical Center and Children's Medical Center, Haebaru, Japan
| | - Soichi Shiiki
- Division of Infectious Diseases, Department of Internal Medicine, Okinawa Prefectural Chubu Hospital, Uruma, Japan
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Declerck C, Giltat A, Boutemy R, Brisset-Dheilly M, Pelhatre A, Hunault-Berger M, Kempf M, Kouatchet A, Mahieu R, Tanguy-Schmidt A, Orvain C. Implementation of a new blood cultures sampling strategy in patients receiving intensive chemotherapy for acute leukemia and/or hematopoietic cell transplantation. Leuk Lymphoma 2023:1-4. [PMID: 37052331 DOI: 10.1080/10428194.2023.2196595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Affiliation(s)
- Charles Declerck
- Haematology department, CHU Angers, Angers, France
- Infectious diseases department, CHU Angers, Angers, France
| | | | | | | | | | - Mathilde Hunault-Berger
- Haematology department, CHU Angers, Angers, France
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
- Fédération Hospitalo-Universitaire 'Grand-Ouest Acute Leukemia' (FHU-GOAL), Angers, France
| | - Marie Kempf
- Microbiology department, CHU Angers, Angers, France
| | | | - Raphael Mahieu
- Infectious diseases department, CHU Angers, Angers, France
| | - Aline Tanguy-Schmidt
- Haematology department, CHU Angers, Angers, France
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
- Fédération Hospitalo-Universitaire 'Grand-Ouest Acute Leukemia' (FHU-GOAL), Angers, France
| | - Corentin Orvain
- Haematology department, CHU Angers, Angers, France
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
- Fédération Hospitalo-Universitaire 'Grand-Ouest Acute Leukemia' (FHU-GOAL), Angers, France
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18
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Li J, Fan W, Zou X, Dai X, Zhao Y, Pan H, Wu S, Li X, Huang H. Clinical evaluation of polymerase chain reaction coupled with quantum dot fluorescence analysis in the identification of bacteria and yeasts in patients with suspected bloodstream infections. Microb Biotechnol 2023; 16:827-837. [PMID: 36722318 PMCID: PMC10034622 DOI: 10.1111/1751-7915.14226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 12/18/2022] [Accepted: 01/16/2023] [Indexed: 02/02/2023] Open
Abstract
Bloodstream infections are serious and complex infectious diseases that often require a rapid diagnosis. Polymerase chain reaction coupled with quantum dot fluorescence analysis (PCR-QDFA) is a novel diagnostic technique. This study aimed to evaluate the diagnostic performance of PCR-QDFA for pathogen detection in patients with suspected bloodstream infections (BSIs). It evaluates 29 kinds of common pathogens (24 bacteria and 5 yeasts) from blood culture bottles. The results of PCR-QDFA identification and traditional microbial laboratory identification were compared, and the latter was used as the 'gold standard' to analyse the diagnostic performance of the PCR-QDFA. In total, 517 blood culture bottles were included in this study. The PCR-QDFA identified microorganisms in 368/422 (87.2%) samples with monomicrobial growth. For the pathogens on the PCR-QDFA list, the assay showed a higher sensitivity of 97.4% (368/378). When polymicrobial growth was analysed, the PCR-QDFA successfully detected 19/25 (76%) microorganisms on the PCR-QDFA list. In addition, 82/82 negative blood culture bottles also showed no pathogens by PCR-QDFA with a specificity of 100%. In conclusion, the PCR-QDFA assay could identify a majority of the common pathogens encountered in clinical practice, showing excellent diagnostic performance for pathogen detection in patients with suspected BSIs.
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Affiliation(s)
- Jie Li
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Wenjia Fan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Xuehan Zou
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Xuan Dai
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Yueyue Zhao
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Hongying Pan
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Shijin Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Xi Li
- Centre of Laboratory Medicine, Zhejiang Provincial People's Hospital, Hangzhou, China
| | - Haijun Huang
- Department of Infectious Disease, Zhejiang Provincial People's Hospital, Hangzhou, China
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19
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Rello J, Paiva JA. Antimicrobial stewardship at the emergency department: Dead bugs do not mutate! Eur J Intern Med 2023; 109:30-32. [PMID: 36669904 DOI: 10.1016/j.ejim.2023.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023]
Affiliation(s)
- Jordi Rello
- Clinical Research/Epidemiology in Pneumonia & Sepsis (CRIPS), Vall d'Hebron Research Institute, Barcelona, Spain; Recherche in Pôle Reánimation, Urgences et Douleur, CHU Nîmes, Nîmes, France.
| | - José Artur Paiva
- Intensive Care Department, Centro Hospitalar Universitário Sao Joao, Porto, Portugal; Medicine Departement, Faculty of Medicine, University of Porto, Portugal.
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20
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Marcelino C, Shepard J. A Quality Improvement Initiative on Reducing Blood Culture Contamination in the Emergency Department. J Emerg Nurs 2023; 49:162-171. [PMID: 36871990 DOI: 10.1016/j.jen.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 11/04/2022] [Indexed: 03/06/2023]
Abstract
INTRODUCTION Contaminated blood cultures may have detrimental effects on patients, the organization, and antimicrobial stewardship. Patients in the emergency department may need blood cultures collected before antimicrobial therapy. Contaminated blood culture samples may contribute to prolonged hospital stay and also are associated with delayed or unnecessary antimicrobial therapy. This initiative aims to improve the emergency department's blood culture contamination rate that will eventually benefit the patients who will receive timely and proper antimicrobial therapy, and benefit the organization fiscally. METHODS This quality improvement initiative used the Define-Measure-Analyze-Improve-Control (DMAIC) process. The organization targets blood culture contamination rate of ≤2.5%. Control charts were used to study how blood culture contamination rate changed over time. In 2018, a workgroup was formed to work on this initiative. Improved site disinfection using 2% Chlorhexidine gluconate cloth before the standard procedure of blood culture sample collection was initiated. Chi squared test of significance was used to compare blood culture contamination rates 6 months before and during feedback intervention as well as contamination rate from source of blood draw. RESULTS Blood culture contamination rates 6 months before and during feedback intervention showed significant decrease (3.52% before intervention and 2.95% after intervention; P < .05). Contamination rates differed significantly based on the source of blood culture draw (7.64% via line, 3.05% via percutaneous venipuncture, and 4.53% via other; P < .01). DISCUSSION Blood culture contamination rate continued to decrease with the use of a predisinfection process with 2% Chlorhexidine gluconate cloth before blood sample collection process. Practice improvement also was evident with effective feedback mechanism.
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Garcia R, Barnes S, Boukidjian R, Goss LK, Spencer M, Septimus EJ, Wright MO, Munro S, Reese SM, Fakih MG, Edmiston CE, Levesque M. Recommendations for change in infection prevention programs and practice. Am J Infect Control 2022; 50:1281-1295. [PMID: 35525498 PMCID: PMC9065600 DOI: 10.1016/j.ajic.2022.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 01/25/2023]
Abstract
Fifty years of evolution in infection prevention and control programs have involved significant accomplishments related to clinical practices, methodologies, and technology. However, regulatory mandates, and resource and research limitations, coupled with emerging infection threats such as the COVID-19 pandemic, present considerable challenges for infection preventionists. This article provides guidance and recommendations in 14 key areas. These interventions should be considered for implementation by United States health care facilities in the near future.
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Affiliation(s)
- Robert Garcia
- Department of Healthcare Epidemiology, State University of New York at Stony Brook, Stony Brook, NY,Address correspondence to Robert Garcia, BS, MT(ASCP), CIC, FAPIC, Department of Healthcare Epidemiology, State University of New York at Stony Brook, 100 Nicolls Rd, Stony Brook, NY, 11580
| | - Sue Barnes
- Infection Preventionist (Retired), San Mateo, CA
| | | | - Linda Kaye Goss
- Department of Infection Prevention, The Queen's Health System, Honolulu, HI
| | | | | | | | - Shannon Munro
- Department of Veterans Affairs Medical Center, Research and Development, Salem, VA
| | - Sara M. Reese
- Quality and Patient Safety Department, SCL Health System Broomfield, CO
| | - Mohamad G. Fakih
- Clinical & Network Services, Ascension Healthcare and Wayne State University School of Medicine, Grosse Pointe Woods, MI
| | | | - Martin Levesque
- System Infection Prevention and Control, Henry Ford Health, Detroit, MI
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22
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Butala N, Berkwitt A, Osborn R. Contamination Frustration: Considering Value-Based Approaches to Manage Contaminated Cultures. Hosp Pediatr 2022; 12:e414-e417. [PMID: 36305208 DOI: 10.1542/hpeds.2022-006819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Lundgren G, Bengtsson M, Liebenhagen A. Swedish emergency nurses' experiences of the preconditions for the safe collection of blood culture in the emergency department during the COVID-19 pandemic. Nurs Open 2022; 10:1619-1628. [PMID: 36303294 PMCID: PMC9874512 DOI: 10.1002/nop2.1416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 01/27/2023] Open
Abstract
AIM To describe how Swedish emergency nurses experience the preconditions of providing safe care during the COVID-19 pandemic when collecting blood culture in the emergency department. DESIGN A qualitative exploratory design using content analysis with a manifest approach. METHOD Semi-structured interviews were conducted with 13 emergency nurses working in the emergency department. RESULTS The analysis resulted in one main category: unprecedented preconditions create extraordinary stress and jeopardize safe care when collecting blood culture. This main category includes four additional categories: organizational changes, challenges in the isolation room, heavy workload creates great stress, and continuous learning. CONCLUSION The COVID-19 outbreak has made the emergency department a workplace where constant changes of routines combined with new information and reorganization risk jeopardize safe care during blood culture sampling. Accordingly, high workload and stress have been identified as a reason for emergency nurses not following guidelines. It is therefore necessary to optimize the preconditions during blood culture sampling and identify situations where there are shortcomings.
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Effective Rapid Diagnosis of Bacterial and Fungal Bloodstream Infections by T2 Magnetic Resonance Technology in the Pediatric Population. J Clin Microbiol 2022; 60:e0029222. [PMID: 36069557 PMCID: PMC9580347 DOI: 10.1128/jcm.00292-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Children are prone to bloodstream infections (BSIs), the rapid and accurate diagnosis of which is an unmet clinical need. The T2MR technology is a direct molecular assay for identification of BSI pathogens, which can help to overcome the limits of blood culture (BC) such as diagnostic accuracy, blood volumes required, and turnaround time. We analyzed results obtained with the T2Bacteria (648) and T2Candida (106) panels in pediatric patients of the Bambino Gesù Children's Hospital between May 2018 and September 2020 in order to evaluate the performance of the T2Dx instrument with respect to BC. T2Bacteria and T2Candida panels showed 84.2% and 100% sensitivity with 85.9% and 94.1% specificity, respectively. The sensitivity and specificity of the T2Bacteria panel increased to 94.9% and 98.7%, respectively, when BC was negative but other laboratory data supported the molecular result. T2Bacteria sensitivity was 100% with blood volumes <2 mL in neonates and infants. T2Bacteria and T2Candida provided definitive microorganism identification in a mean time of 4.4 and 3.7 h, respectively, versus 65.7 and 125.5 h for BCs (P < 0.001). T2 panels rapidly and accurately enable a diagnosis of a pediatric BSI, even in children under 1 year of age and for very small blood volumes. These findings support their clinical use in life-threatening pediatric infections, where the time to diagnosis is of utmost importance, in order to improve survival and minimize the long-term sequalae of sepsis. The T2 technology could be further developed to include more bacteria and fungi species that are involved in the etiology of sepsis.
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Lee IK, Chang JP, Huang WC, Tai CH, Wu HT, Chi CH. Comparative of clinical performance between next-generation sequencing and standard blood culture diagnostic method in patients suffering from sepsis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2022; 55:845-852. [PMID: 35995673 DOI: 10.1016/j.jmii.2022.07.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 07/08/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Next-generation sequencing (NGS) is a massively unbiased sequencing technology. The objective of this study was to evaluate the performance of NGS-based approach in the detection of microorganisms from septic patients and compare with results of blood culture (BC). METHODS The observational and non-interventional study was conducted from April 2019 to August 2019. RESULTS A total of 96 sets of BC and 48 NGS results obtained from 48 septic patients were analyzed in this study. Thirty-two microorganisms (27 bacteria, 3 fungi and 2 viral) were detected by NGS in 23 (47.9%) patients; and 18 bacteria in 18 (37.5%) patients by BC. Exclusion of skin commensals, the positivity of NGS and BC was 62.5% and 14.5%, respectively (P < 0.001). Microorganisms identified by NGS demonstrated positive agreement with BC in 12 (25%) patients, including concordant results in 11 (22.9%) cases, and discrepancy results in 1 (2%). Of 11 patients with concordant results, 4 had additional microorganisms detected by NGS. NGS-positive but BC-negative was found in 9 (18.7%) patients. Using NGS, difficult-to-culture micro-organisms such as Pneumocystic jirovecii was identified in 2 patients, and Leptospira interrogans in one. Six (12.5%) patients with BC-positive but NGS-negative, whereas skin commensals were isolated in 4 (66.6%) cases. The number of patients that were positive by BC only increase from 29% to 47.9% when combining NGS and BC analyses (P = 0.033). CONCLUSIONS Our study support the advantage of NGS for the diagnosis of infecting microorganisms in sepsis, especially for microorganisms that are currently difficult or impossible to culture.
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Affiliation(s)
- Ing-Kit Lee
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan; School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Jen-Ping Chang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Wen-Chi Huang
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Chien-Hsiang Tai
- Division of Infectious Diseases, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan
| | - Huang-Tu Wu
- Joint Commission of Precision Medicine, Taipei, Taiwan
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Dräger S, Giehl C, Søgaard KK, Egli A, de Roche M, Huber LC, Osthoff M. Do we need blood culture stewardship programs? A quality control study and survey to assess the appropriateness of blood culture collection and the knowledge and attitudes among physicians in Swiss hospitals. Eur J Intern Med 2022; 103:50-56. [PMID: 35715280 DOI: 10.1016/j.ejim.2022.04.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND Guidance for blood culture (BC) collection is limited. Inappropriate BC collection may be associated with potentially harmful consequences for the patient such as unnecessary laboratory testing, treatment and additional costs. The aim of the study was to assess the appropriateness of BC collection and related knowledge and attitude of precribers. MATERIALS We conducted a single-center quality control study to assess the appropriateness of BC collection according to the local guidelines in a Swiss university hospital in 2020 by combining three different approaches: point prevalence, patient-individual longitudinal and diseases-related analysis. Second, we conducted a survey regarding BC collection practices and knowledge among physicians in two non-university and one university hospital using an 18-item electronic questionnaire. RESULTS We analyzed 1114 BC collected in 344 patients. Approximately 40% of the BCs were collected inappropriately, in particular in diseases with low pretest probability of bacteremia such as non-severe community acquired pneumonia (CAP). Follow-up blood culture (FUBC) collection was inappropriate in 60%. Growth of a relevant pathogen was more frequently observed in appropriately than in inappropriately collected BCs (18% vs. 3%, p < 0.001). In the survey, uncertainty concerning the need of index BC collection was high in non-severe CAP and uncomplicated cellulitis. CONCLUSIONS Almost half of the BCs was not collected according to the guidelines, especially in non-severe CAP and in case of FUBCs. Substantial uncertainty among physicians regarding BC ordering practices was identified. The implementation of diagnostic stewardship programs may improve BC collection practices, increase adherence to local guidelines, and may help reducing unnecessary diagnostics and treatment.
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Affiliation(s)
- Sarah Dräger
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland; Department of Clinical Research, University of Basel, Schanzenstrasse 55, 4056 Basel, Switzerland.
| | - Céline Giehl
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland.
| | - Kirstine Kobberøe Søgaard
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland; Department of Biomedicine, University Hospital Basel, Hebelstrasse 20, 4031 Basel Switzerland.
| | - Adrian Egli
- Division of Clinical Bacteriology and Mycology, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland; Department of Biomedicine, University Hospital Basel, Hebelstrasse 20, 4031 Basel Switzerland.
| | - Mirjam de Roche
- Department of Internal Medicine, Hospital Thun, Krankenhausstrasse 12, 3600 Thun, Switzerland.
| | - Lars C Huber
- Department of Internal Medicine, City Hospital Triemli Zurich, Birmensdorferstrasse 497, 8063 Zurich, Switzerland; University of Zurich, Raemistrasse 71, 8006 Zurich, Switzerland.
| | - Michael Osthoff
- Division of Internal Medicine, University Hospital Basel, Petersgraben 4, 4031 Basel, Switzerland; Department of Clinical Research, University of Basel, Schanzenstrasse 55, 4056 Basel, Switzerland.
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Giovane R, Sheppard RA. Patient Parameters Associated With a Positive Blood Culture Using NeuroShell: A Retrospective Chart Review. Cureus 2022; 14:e28635. [PMID: 36196317 PMCID: PMC9524715 DOI: 10.7759/cureus.28635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2022] [Indexed: 11/05/2022] Open
Abstract
Bacteremia is a common and life-threatening condition. It has an incidence of 140 to 160 per 100,000 person-years in the United States. Since bacteremia has many presentations, it can be challenging to diagnose. Subsequently there are very few guidelines on when to order a blood culture in an emergency setting. Neural networks are a means of machine learning and are presently being used in medicine to aid in decision making. With the use of machine learning, 22 variables that have been associated with infection and bacteremia were used to build a neural network to determine which variables associated with bacteremia are most associated with a positive blood culture.
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Schinkel M, Boerman AW, Bennis FC, Minderhoud TC, Lie M, Peters-Sengers H, Holleman F, Schade RP, de Jonge R, Wiersinga WJ, Nanayakkara PWB. Diagnostic stewardship for blood cultures in the emergency department: A multicenter validation and prospective evaluation of a machine learning prediction tool. EBioMedicine 2022; 82:104176. [PMID: 35853298 PMCID: PMC9294655 DOI: 10.1016/j.ebiom.2022.104176] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/16/2022] [Accepted: 07/04/2022] [Indexed: 11/19/2022] Open
Abstract
Background Overuse of blood cultures (BCs) in emergency departments (EDs) leads to low yields and high numbers of contaminated cultures, accompanied by increased diagnostics, antibiotic usage, prolonged hospitalization, and mortality. We aimed to simplify and validate a recently developed machine learning model to help safely withhold BC testing in low-risk patients. Methods We extracted data from the electronic health records (EHR) for 44.123 unique ED visits with BC sampling in the Amsterdam UMC (locations VUMC and AMC; the Netherlands), Zaans Medical Center (ZMC; the Netherlands), and Beth Israel Deaconess Medical Center (BIDMC; United States) in periods between 2011 and 2021. We trained a machine learning model on the VUMC data to predict blood culture outcomes and validated it in the AMC, ZMC, and BIDMC with subsequent real-time prospective evaluation in the VUMC. Findings The model had an Area Under the Receiver Operating Characteristics curve (AUROC) of 0.81 (95%-CI = 0.78–0.83) in the VUMC test set. The most important predictors were temperature, creatinine, and C-reactive protein. The AUROCs in the validation cohorts were 0.80 (AMC; 0.78–0.82), 0.76 (ZMC; 0.74–0.78), and 0.75 (BIDMC; 0.74–0.76). During real-time prospective evaluation in the EHR of the VUMC, it reached an AUROC of 0.76 (0.71–0.81) among 590 patients with BC draws in the ED. The prospective evaluation showed that the model can be used to safely withhold blood culture analyses in at least 30% of patients in the ED. Interpretation We developed a machine learning model to predict blood culture outcomes in the ED, which retained its performance during external validation and real-time prospective evaluation. Our model can identify patients at low risk of having a positive blood culture. Using the model in practice can significantly reduce the number of blood culture analyses and thus avoid the hidden costs of false-positive culture results. Funding This research project was funded by the Amsterdam Public Health – Quality of Care program and the Dutch “Doen of Laten” project (project number: 839205002).
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Affiliation(s)
- Michiel Schinkel
- Section General Internal Medicine, Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC, location VU University Medical Center, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands; Center for Experimental and Molecular Medicine (CEMM), Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Anneroos W Boerman
- Section General Internal Medicine, Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC, location VU University Medical Center, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands; Department of Clinical Chemistry, Amsterdam UMC, Vrije Universiteit Amsterdam, AGEM Research Institute, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands
| | - Frank C Bennis
- Department of Computer Science, Quantitative Data Analytics Group, Department of Computer Science, Faculty of Science, VU University, De Boelelaan 1105, 1081HV Amsterdam, the Netherlands
| | - Tanca C Minderhoud
- Section General Internal Medicine, Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC, location VU University Medical Center, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands
| | - Mei Lie
- Department of EVA Service Center, Amsterdam UMC, location VU University Medical Center, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands; Department of EVA Service Center, Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Hessel Peters-Sengers
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Frits Holleman
- Section General and Acute Internal Medicine, Department of Internal Medicine, Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Rogier P Schade
- Department of Medical Microbiology and Infection Prevention, Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Robert de Jonge
- Department of Clinical Chemistry, Amsterdam UMC, Vrije Universiteit Amsterdam, AGEM Research Institute, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands
| | - W Joost Wiersinga
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands; Section Infectious Diseases, Department of Internal Medicine, Amsterdam UMC, location Academic Medical Center, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands
| | - Prabath W B Nanayakkara
- Section General Internal Medicine, Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam UMC, location VU University Medical Center, De Boelelaan 1118, 1081 HZ Amsterdam, the Netherlands.
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Minami K, Yamada T, Yoshioka K, Kawanishi F, Ogawa T, Ukimura A. Effect of the introduction of a management bundle for blood culture collection. Am J Infect Control 2022; 50:772-776. [PMID: 34863897 DOI: 10.1016/j.ajic.2021.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Inappropriate blood collection subjected to blood culture (BC) causes BC contamination and may complicate the diagnose is of infectious diseases. Therefore, we developed a bundle based on the guideline recommendations for appropriate blood collection and examined the effects of bundle introduction. METHODS We performed a retrospective analysis of BC samples to determine the contamination rates before and after introducing the BC bundle. We also analyzed the correlation between the compliance rate of the bundle and contamination rate, and between each bundle element and contamination. RESULTS After the introduction of the bundle, the contamination rate was significantly reduced from 5.4% ± 0.9% to 1.7± 0.7% (P < .01). The compliance rate of the bundle was significantly associated with a lower contamination rate (P < .01). Multivariable logistic regression showed that collection from superficial veins of the cubital fossa (odds ratio [OR], 0.25; 95% confidence interval [CI], 0.13-0.51, P < .01) and disinfection of the skin at the blood collection site with 1% chlorhexidine alcohol swab (OR, 0.41; 95% CI, 0.25-0.68, P < .01) were significantly associated with lower contamination. CONCLUSIONS This study suggests that the introduction of the BC bundle significantly reduced the contamination rate, and bundle compliance was associated with a lower contamination rate.
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Affiliation(s)
- Kenta Minami
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan; Department of Central Clinical Laboratory, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan.
| | - Tomoyuki Yamada
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan; Department of Pharmacy, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan
| | - Kyouhei Yoshioka
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan
| | - Fumiko Kawanishi
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan
| | - Taku Ogawa
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan; Department of Microbiology and Infection Control, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Akira Ukimura
- Infection Control Center, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan; Department of Central Clinical Laboratory, Osaka Medical and Pharmaceutical University Hospital, Osaka, Japan
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The ability of inflammatory markers to recognize infection in cancer patients with fever at admission. Immunol Res 2022; 70:667-677. [PMID: 35764901 DOI: 10.1007/s12026-022-09299-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/23/2022] [Indexed: 11/05/2022]
Abstract
Infection is one of the main causes of death in cancer patients. Accurate identification of fever caused by infection could avoid unnecessary antibiotic treatment and hospitalization. This study evaluated the diagnostic value of procalcitonin (PCT), C-reactive protein (CRP), interleukin-6 (IL-6), interleukin-10 (IL-10), and other commonly used inflammatory markers in suspected infected adult cancer patients with fever, for better use of antibiotics. This research retrospective analyzed the clinical data of 102 adult cancer patients with fever and compared the serum levels of commonly used inflammatory markers for different fever reasons. Receiver-operating characteristic (ROC) curve and logistic regression analyses were performed. In adult cancer patients with fever, the serum PCT, CRP, IL-6, and IL-10 levels of infected patients were significantly higher than uninfected patients (median 1.19 ng/ml vs 0.14 ng/ml, 93.11 mg/l vs 56.55 mg/l, 123.74 pg/ml vs 47.35 pg/ml, 8.74 pg/ml vs 3.22 pg/ml; Mann-Whitney p = 0.000, p = 0.009, p = 0.004, p = 0.000, respectively). The ROC area under the curve(AUC) was 0.769 (95% confidence interval (CI) 0.681-0.857; p = 0.000) for PCT, 0.664 (95% CI 0.554-0.775; p = 0.009) for CRP, 0.681(95% CI 0.576-0.785; p = 0.004) for IL-6, and 0.731(95% CI 0.627-0.834; p = 0.000) for IL-10. PCT had specificity of 96.67% and positive predictive value (PPV) of 97.6%, when the cut-off value is set as 0.69 ng/ml. The serum IL-6 and IL-10 levels also had significant differences between the infected and uninfected cancer patients with advanced disease (median 128.92 pg/ml vs 36.40 pg/ml, 8.05 pg/ml vs 2.92 pg/ml; Mann-Whitney p = 0.003, p = 0.001, respectively). For the patients with neutropenia, IL-6 and IL-10 had higher AUC of 0.811 and 0.928, respectively. With a cut-off of 9.10 pg/ml, IL-10 had the highest sensitivity 83.33% and specificity 100%. In adult cancer patients, PCT had the best performance compared to CRP, IL-6, and IL-10 in differentiating infected from uninfected causes of fever, with high specificity and PPV. IL-6 and IL-10 might be useful in cancer patients with severe bloodstream infections and advanced disease. However, for patients with neutropenia, IL-10 might be more valuable than PCT in diagnosing infection.
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Blood Culture Contamination: A Single General Hospital Experience of 2-Year Retrospective Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19053009. [PMID: 35270715 PMCID: PMC8910491 DOI: 10.3390/ijerph19053009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/24/2022] [Accepted: 02/28/2022] [Indexed: 01/25/2023]
Abstract
In the event of blood culture contamination (BCC), blood culture (BC) needs to be repeated. This may delay appropriate treatment, prolong hospitalization and, consequently, increase its costs. The aim of the study was to assess the frequency of BCC and associated factors in a general hospital in Poland based on reports of BC in samples submitted for laboratory testing in 2019−2020. BCC is recognized when bacteria (especially those belonging to natural human microbiota) are isolated from a single sample and no clinical signs indicated infection. True positive BC is confirmed by the growth of bacteria in more than one set of blood samples with the corresponding clinical signs present. The structure of BC sets, microorganisms, and laboratory costs of BCC were analyzed. Out of 2274 total BC cases, 11.5% were true positive BC and 9.5% were BCC. Of all the BCC identified in the entire hospital, 72% was from Internal Medicine (IM) and Intensive Care Unit (ICU) combined. When single sets for BC were used in IM in 2020, the use increased to 85% compared with 2019 (p < 0.05). The predominant isolates were coagulase-negative staphylococci (84%). The estimated extra laboratory costs of BCC exceeded EUR 268,000. The BCC was a more serious problem than expected, including non-recommended using of single BC sets. Compliance with the BC collection procedure should be increased in order to reduce BCC and thus extra hospital costs.
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Brink AJ, Centner CM, Opperman S. Microbiology Assessments in Critically Ill Patients. Semin Respir Crit Care Med 2022; 43:75-96. [PMID: 35172360 DOI: 10.1055/s-0041-1741018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The prevalence of suspected or proven infections in critically ill patients is high, with a substantial attributable risk to in-hospital mortality. Coordinated guidance and interventions to improve the appropriate microbiological assessment for diagnostic and therapeutic decisions are therefore pivotal. Conventional microbiology follows the paradigm of "best practice" of specimen selection and collection, governed by laboratory processing and standard operating procedures, and informed by the latest developments and trends. In this regard, the preanalytical phase of a microbiological diagnosis is crucial since inadequate sampling may result in the incorrect diagnosis and inappropriate management. In addition, the isolation and detection of contaminants interfere with multiple intensive care unit (ICU) processes, which confound the therapeutic approach to critically ill patients. To facilitate bedside enablement, the microbiology laboratory should provide expedited feedback, reporting, and interpretation of results. Compared with conventional microbiology, novel rapid and panel-based diagnostic strategies have the clear advantages of a rapid turnaround time, the detection of many microorganisms including antimicrobial resistant determinants and thus promise substantial improvements in health care. However, robust data on the clinical evaluation of rapid diagnostic tests in presumed sepsis, sepsis and shock are extremely limited and more rigorous intervention studies, focusing on direct benefits for critically ill patients, are pivotal before widespread adoption of their use through the continuum of ICU stay. Advocating the use of these diagnostics without firmly establishing which patients would benefit most, how to interpret the results, and how to treat according to the results obtained, could in fact be counterproductive with regards to diagnostic "best practice" and antimicrobial stewardship. Thus, for the present, they may supplement but not yet supplant conventional microbiological assessments.
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Affiliation(s)
- Adrian John Brink
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
| | - Chad M Centner
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Groote Schuur Hospital, Cape Town, South Africa
| | - Stefan Opperman
- Division of Medical Microbiology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.,National Health Laboratory Service, Green Point, Cape Town, South Africa
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Sastry A, Shaji R, Madigubba H, Priyadarshi K, Anandh P, Nathan B, Vivekanandan M. Effectiveness of multimodal intervention to improve blood culture collection in the emergency department. J Glob Infect Dis 2022; 14:10-16. [PMID: 35418732 PMCID: PMC8996457 DOI: 10.4103/jgid.jgid_138_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/20/2021] [Accepted: 09/24/2021] [Indexed: 11/10/2022] Open
Abstract
Introduction: The blood culture (BC) contamination was a significant problem in our hospital, especially in the emergency department (ED). The study, therefore, was undertaken to improve the BC collection in the ED. Methods: The study was conducted for 1 year divided into two phases of 6 months each: Preintervention phase and intervention phase (regular and phlebotomist groups). The interventions comprised implementing standard protocol for BC collection and conducting educational sessions. In preintervention and regular groups, the BCs were collected by interns and technicians, while dedicated phlebotomist did so in the phlebotomist group. Data were analyzed and interpreted for the contamination rate as well as compliance in adequate filling of the requisition form. Statistical Package for the Social Sciences (SPSS) version 22. A value of P < 0.005 was considered statistically significant, and P < 0.01 was considered statistically significant. Results: In the preintervention group, 13.7% of specimens were reported as contaminated which was reduced to 4.2% and 3.2% in the regular and phlebotomist group, respectively, after intervention. Compliance of health-care workers to various elements of BC collection protocol was also found to be significantly improved in the intervention phase compared to the preintervention phase (P < 0.001). Conclusions: Implementation of this multimodal intervention resulted in a drastic reduction in BC contamination and improvement in compliance to BC collection protocol and filling of various parameters in the BC requisition form, thus improving the overall effectiveness of BC testing. It was also noted that the contamination rate was further reduced by implementing dedicated phlebotomist.
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Jouffroy R, Gilbert B, Hassan A, Tourtier JP, Bloch-Laine E, Ecollan P, Boularan J, Bounes V, Vivien B, Gueye P. Adequacy of probabilistic prehospital antibiotic therapy for septic shock. Am J Emerg Med 2021; 53:80-85. [PMID: 34995860 DOI: 10.1016/j.ajem.2021.12.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Guidelines on sepsis management recommend early recognition, diagnosis and treatment, especially early antibiotic therapy (ABT) administration in order to reduce septic shock (SS) mortality. However, the adequacy of probabilistic prehospital ABT remains unknown. METHODS From May 2016 to March 2021, all consecutive patients with SS cared for by a prehospital mICU intervention were retrospectively analyzed. RESULTS Among 386 patients retrospectively analyzed, 119 (33%) received probabilistic prehospital ABT, among which 74% received a 3rd generation cephalosporin: 31% cefotaxime and 42% ceftriaxone. No patient had a serious adverse effect related to ABT administration. Overall mortality rate on day-30 was 29%. Among the 119 patients with prehospital ABT, bacteriological identification was obtained for 81 (68%) patients with adequate prehospital ABT for 65 patients (80%) of which 10 (15%) deceased on day-30. Conversely, among the 16 (20%) patients with inadequate prehospital ABT, 9 patients (56%) were deceased on day-30. Prehospital adequate ABT was significantly different between alive and deceased patients on day-30 (p = 4.10-3). After propensity score matching, a significant association between adequate prehospital ABT administration and day-30 mortality was observed (aOR = 0.09 [0.01-0.47]). Inverse probability treatment weighting with multivariable logistic regression reported a day-30 mortality decrease in the adequate prehospital ABT group: aOR = 0.70 [0.53-0.93]. CONCLUSIONS Among SS cared for by a mICU, probabilistic prehospital ABT is adequate most of the time and associated with a day-30 mortality decrease. Further prospective studies are needed to confirm these results and the weight of prehospital ABT in the prehospital bundle of care for SS.
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Affiliation(s)
- Romain Jouffroy
- Intensive Care Unit, University Hospital Ambroise Paré, Boulogne Billancourt, France; Intensive Care Unit, Anaesthesiology, SAMU, Necker Enfants Malades Hospital, Assistance Publique - Hôpitaux de Paris, Université de Paris, Paris, France; Centre de recherche en Epidémiologie et Santé des Populations, U1018 INSERM, Université Paris Saclay, France; Institut de Recherche bioMédicale et d'Epidémiologie du Sport - EA7329, INSEP, Université de Paris, France; EA 7525 Université des Antilles, France.
| | - Basile Gilbert
- Department of Emergency Medicine, SAMU 31, University Hospital of Toulouse, Toulouse, France; Paris Fire Brigade, Paris, France
| | - Anna Hassan
- Intensive Care Unit, University Hospital Ambroise Paré, Boulogne Billancourt, France
| | - Jean-Pierre Tourtier
- Emergency Department, Cochin Hospital, Paris, France; Emergency Department, SMUR, Hôtel Dieu Hospital, Paris, France
| | - Emmanuel Bloch-Laine
- Intensive Care Unit, SMUR, Pitie Salpêtriere Hospital, 47 Boulevard de l'Hôpital, 75013 Paris, France
| | | | - Josiane Boularan
- SAMU 972 University Hospital of Martinique, Fort-de-France, Martinique, France
| | - Vincent Bounes
- Department of Emergency Medicine, SAMU 31, University Hospital of Toulouse, Toulouse, France; Paris Fire Brigade, Paris, France
| | - Benoit Vivien
- Intensive Care Unit, Anaesthesiology, SAMU, Necker Enfants Malades Hospital, Assistance Publique - Hôpitaux de Paris, Université de Paris, Paris, France
| | - Papa Gueye
- EA 7525 Université des Antilles, France; SAMU 972 University Hospital of Martinique, Fort-de-France, Martinique, France
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ÖKSÜZ Ş, DÖNMEZ B, KESKİN B, MEMİŞ N, KARAMURAT ZD, ÇALIŞKAN E, ÖZTÜRK C, ŞAHİN İ. Evaluatıon of Qualıty Assurance Indıcators and Contamınatıon Rate in Blood Culture. KONURALP TIP DERGISI 2021. [DOI: 10.18521/ktd.858764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Lephart P, LeBar W, Newton D. Behind Every Great Infection Prevention Program is a Great Microbiology Laboratory: Key Components and Strategies for an Effective Partnership. Infect Dis Clin North Am 2021; 35:789-802. [PMID: 34362544 DOI: 10.1016/j.idc.2021.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A great clinical microbiology laboratory supporting a great infection prevention program requires focusing on the following services: rapid and accurate identification of pathogens associated with health care-associated infections; asymptomatic surveillance for health care-acquired pathogens before infections arise; routine use of broad and flexible antimicrobial susceptibility testing to direct optimal therapy; implementation of epidemiologic tracking tools to identify outbreaks; development of clear result communication with interpretative comments for clinicians. These goals are best realized in a collaborative relationship with the infection prevention program so that both can benefit from the shared priorities of providing the best patient care.
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Affiliation(s)
- Paul Lephart
- Clinical Microbiology Laboratory, Department of Pathology, University of Michigan Medical School, 2800 Plymouth Road Building 36-1221-52, Ann Arbor, MI 48109-2800, USA.
| | - William LeBar
- Clinical Microbiology Laboratory, Department of Pathology, University of Michigan Medical School, 2800 Plymouth Road Building 36-1221-52, Ann Arbor, MI 48109-2800, USA
| | - Duane Newton
- NaviDx Consulting, Department of Pathology, University of Michigan Medical School, 2800 Plymouth Road Building 36-1221-52, Ann Arbor, MI 48109-2800, USA
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Sommerstein R, Damonti L, Marschall J, Harbarth S, Gasser M, Kronenberg A, Buetti N. Distribution of pathogens and antimicrobial resistance in ICU-bloodstream infections during hospitalization: a nationwide surveillance study. Sci Rep 2021; 11:16876. [PMID: 34413340 PMCID: PMC8376881 DOI: 10.1038/s41598-021-95873-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 07/28/2021] [Indexed: 12/14/2022] Open
Abstract
Changing microorganism distributions and decreasing antibiotic susceptibility over the duration of hospitalization have been described for the colonization or infection of selected organ systems. Few data are available on bacteremias in the intensive care unit (ICU) setting. We conducted a nationwide study on bloodstream infection (BSI) using data from the Swiss Centre for Antibiotic Resistance (ANRESIS). We analyzed data on BSI detected in the ICU from hospitals that sent information on a regular basis during the entire study period (2008–2017). We described specific trends of pathogen distribution and resistance during hospitalization duration. We included 6505 ICU- BSI isolates from 35 Swiss hospitals. We observed 2587 possible skin contaminants, 3788 bacteremias and 130 fungemias. The most common microorganism was Escherichia coli (23.2%, 910), followed by Staphylococcus aureus (18.7%, 734) and enterococci (13.1%, 515). Enterococcus spp (p < 0.0001) and Candida spp (p < 0.0001) increased in proportion, whereas E. coli (p < 0.0001) and S. aureus (p < 0.0001) proportions decreased during hospitalization. Resistances against first- and second-line antibiotics increased linearly during hospitalization. Pathogen distribution and antimicrobial resistance in ICU-BSI depends on the duration of the hospitalization. The proportion of enterococcal BSI, candidemia and resistant microorganisms against first- and second-line antibiotics increased during hospitalization.
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Affiliation(s)
- Rami Sommerstein
- Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland.
| | - Lauro Damonti
- Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland
| | - Jonas Marschall
- Department of Infectious Diseases, Bern University Hospital, Bern, Switzerland
| | - Stephan Harbarth
- Infection Control Programme, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - Michael Gasser
- Swiss Centre for Antibiotic Resistance (ANRESIS), Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Andreas Kronenberg
- Swiss Centre for Antibiotic Resistance (ANRESIS), Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Niccolò Buetti
- Infection Control Programme, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland. .,INSERM, IAME, University of Paris, Paris, France.
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Codina-Jiménez C, Marin S, Álvarez M, Quesada MD, Rodríguez-Ponga B, Valls E, Quiñones C. Risk factors for nosocomial bloodstream infections in COVID-19 affected patients: protocol for a case-control study. Eur J Hosp Pharm 2021; 29:e2-e5. [PMID: 34400550 PMCID: PMC8899639 DOI: 10.1136/ejhpharm-2021-002776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 07/05/2021] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Nosocomial bloodstream infection (nBSI) is an important clinical concern among COVID-19 hospitalised patients. It can cause sepsis and septic shock leading to high morbidity, mortality, and the emergence of antibiotic resistance. The aim of this case-control study is to identify the risk factors associated with the nBSI development in COVID-19 hospitalised patients and its incidence. METHODS AND ANALYSIS A retrospective case-control study will be performed. Cases will include nBSI episodes of adult patients (≥18 years) admitted to Hospital Universitari Germans Trias i Pujol, Barcelona, Spain, from April to December 2020 with a diagnosis of SARS-CoV-2 pneumonia. Patients transferred from other hospitals will be excluded. Controls will include hospitalisation episodes of COVID-19 patients without nBSI. We will recruit a minimum of 74 nBSI episodes (cases) and 74 controls (according to sample size calculation). We will collect data on sociodemographics, clinical status at admission, hospital admission, in-hospital mortality, and exposure data (use of antivirals, glucocorticoids or immunomodulatory agents, length of hospitalisation, and use of medical devices such as intravenous catheters). A bivariate and a subsequent multivariate regression analysis will be performed to assess the independent effect of the associated risk factors after adjusting for confounders. The nBSI incidence rate will be estimated according to the number of nBSI episodes in admitted COVID-19 patients among the total person-month of follow-up. ETHICS AND DISSEMINATION The protocol of this study was approved by the Ethical Committee for Drug Investigation of the Hospital Universitari Germans Trias i Pujol. The results of this case-control study will be published in a peer reviewed journal.
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Affiliation(s)
- Carla Codina-Jiménez
- Pharmacy Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Sergio Marin
- Pharmacy Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Marlene Álvarez
- Pharmacy Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Maria Dolores Quesada
- Microbiology Department, Clinical Laboratory North Metropolitan Area, Autonomous University of Barcelona, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Beatriz Rodríguez-Ponga
- Microbiology Department, Clinical Laboratory North Metropolitan Area, Autonomous University of Barcelona, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Ester Valls
- Pharmacy Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Carles Quiñones
- Pharmacy Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
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O'Hagan S, Nelson P, Speirs L, Moriarty P, Mallett P. How to interpret a paediatric blood culture. Arch Dis Child Educ Pract Ed 2021; 106:244-250. [PMID: 33637581 DOI: 10.1136/archdischild-2020-321121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/08/2021] [Indexed: 11/04/2022]
Abstract
Blood culture is one of the most important diagnostic tests in medicine, considering the significant morbidity and mortality associated with bloodstream infection (BSI). However, it is an often misused and misinterpreted test in everyday paediatric practice. In this article, we explore the evidence related to paediatric blood cultures, with the aim of providing clear and clinically-relevant recommendations for its judicious use.
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Affiliation(s)
- Shaun O'Hagan
- Department of Paediatrics, Royal Belfast Hospital for Sick Children, Belfast, UK shaun.o'
| | - Peter Nelson
- Clinical Microbiology, Belfast Health and Social Care Trust, Belfast, UK
| | - Lynne Speirs
- Department of Paediatrics, Royal Belfast Hospital for Sick Children, Belfast, UK
| | - Paul Moriarty
- Department of Paediatrics, Royal Belfast Hospital for Sick Children, Belfast, UK
| | - Peter Mallett
- Department of Paediatrics, Royal Belfast Hospital for Sick Children, Belfast, UK
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Kalanxhi E, Osena G, Kapoor G, Klein E. Confidence interval methods for antimicrobial resistance surveillance data. Antimicrob Resist Infect Control 2021; 10:91. [PMID: 34108041 PMCID: PMC8191092 DOI: 10.1186/s13756-021-00960-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 06/04/2021] [Indexed: 11/30/2022] Open
Abstract
Background Antimicrobial resistance (AMR) is one of the greatest global health challenges today, but burden assessment is hindered by uncertainty of AMR prevalence estimates. Geographical representation of AMR estimates typically pools data collected from several laboratories; however, these aggregations may introduce bias by not accounting for the heterogeneity of the population that each laboratory represents. Methods We used AMR data from up to 381 laboratories in the United States from The Surveillance Network to evaluate methods for estimating uncertainty of AMR prevalence estimates. We constructed confidence intervals for the proportion of resistant isolates using (1) methods that account for the clustered structure of the data, and (2) standard methods that assume data independence. Using samples of the full dataset with increasing facility coverage levels, we examined how likely the estimated confidence intervals were to include the population mean. Results Methods constructing 95% confidence intervals while accounting for possible within-cluster correlations (Survey and standard methods adjusted to employ cluster-robust errors), were more likely to include the sample mean than standard methods (Logit, Wilson score and Jeffreys interval) operating under the assumption of independence. While increased geographical coverage improved the probability of encompassing the mean for all methods, large samples still did not compensate for the bias introduced from the violation of the data independence assumption. Conclusion General methods for estimating the confidence intervals of AMR rates that assume data are independent, are likely to produce biased results. When feasible, the clustered structure of the data and any possible intra-cluster variation should be accounted for when calculating confidence intervals around AMR estimates, in order to better capture the uncertainty of prevalence estimates. Supplementary Information The online version contains supplementary material available at 10.1186/s13756-021-00960-5.
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Affiliation(s)
- Erta Kalanxhi
- Center for Disease Dynamics, Economics and Policy (CDDEP), Washington, DC, USA
| | - Gilbert Osena
- Center for Disease Dynamics, Economics and Policy (CDDEP), Washington, DC, USA
| | - Geetanjali Kapoor
- Center for Disease Dynamics, Economics and Policy (CDDEP), Washington, DC, USA
| | - Eili Klein
- Center for Disease Dynamics, Economics and Policy (CDDEP), Washington, DC, USA. .,Johns Hopkins University, Baltimore, MD, USA.
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Investigation of Antimicrobial Susceptibilities Among Bacteria Isolated from Blood Cultures in Hospitalized Patients, Tehran, Iran. ARCHIVES OF CLINICAL INFECTIOUS DISEASES 2021. [DOI: 10.5812/archcid.86878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Bacteremia is the status, which is detected via a positive blood culture test with no contamination. Centers for Disease Control and Prevention (CDC) indicates that direct medical procedures and total costs are significantly high. Antibiotic resistance can play a major role in the costs, which are related to the long duration of treatment. Objectives: The aim of this study was to investigate the rate and profiles of antimicrobial susceptibility of blood culture isolates from Tehran, Iran. Methods: In the current cross-sectional study, a total of 5,000 blood culture samples were collected from patients hospitalized in the Loghman General Hospital, Tehran, Iran, with positive blood culture results from 2012 to 2013. Susceptibility to antimicrobial agents was analyzed using National Committee for Clinical Laboratory Standards guidelines. Results: Coagulase-negative staphylococci (38.8%), Staphylococcus aureus (20.5%), Acinetobacter (11.9%), and Escherichia coli (11.7%) were the most frequent bacteria isolated from the blood cultures, collectively accounting for > 80% of the isolates. Of isolated microorganisms, 63.75% and 36.24% belonged to Gram-positive and Gram-negative bacteria, respectively. Moreover, 88% of the isolates were MRSA (oxacillin-/methicillin-resistant), and 7% were VRE (vancomycin-resistant). Conclusions: The most frequent isolated organisms were Gram-positive bacteria, and the rate of MDR (multi-drug resistance) was high. The results of the current study obviously indicate the misuse of antibiotic in society. National surveillance studies in Iran will be useful for clinicians to choose the right empirical treatment and will help control and prevent infections caused by resistant organisms.
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A Quality Improvement Initiative to Reduce Blood Culture Contamination in the Neonatal Unit. Pediatr Qual Saf 2021; 6:e413. [PMID: 34046542 PMCID: PMC8143735 DOI: 10.1097/pq9.0000000000000413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 12/07/2020] [Indexed: 11/25/2022] Open
Abstract
Peripheral blood culture contamination (BCC) can lead to an initiation of unnecessary antimicrobial treatment, further laboratory tests, increased length of stay, and increased costs. This study describes a 12-month quality improvement (QI) program to reduce the BCC rate in a neonatal unit by 50%. Methods The QI team focused on standardizing processes to align with best practices using process mapping and cause and effect diagrams. Plan-Do-Study-Act (PDSA) 1: inoculation of blood culture bottles with the introduction of transfer device; PDSA 2: preparation of the skin for peripheral intravenous cannula insertion; PDSA 3: aseptic technique education package; and PDSA 4: optimizing blood volume of blood collected for culture. The team used statistical process control methodology to detect special cause variation. Results Compliance with the standard processes as part of PSDA 1 improved from a mean level of 50% to 100% and for PDSA 2 improved from a mean level of 50% to 95%. After implementation of PDSA 3, scores on a relevant knowledge test increased from a mean of 39% (pretraining test; n = 10) to 92% (posttraining test; n = 10) (P < 0.001). Postimplementation of the processes for PDSA 4, a minimum of 1 mL was collected in 94% of blood culture collection events (n = 450) (mean 1.1 mL; range 0.5-3.5 mL). Special cause variation occurred after the implementation of the PDSA cycles. During the baseline period, the BCC rate was 2.0% and decreased to 1.0% postinterventions implementation. Conclusions Interventions focused on standardizing practices around collection of blood cultures in neonates were associated with fewer contaminants.This study is reported according to the SQUIRE 2.0 guidelines.
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Risk factors and clinical outcomes associated with blood culture contamination. Infect Control Hosp Epidemiol 2021; 43:291-297. [PMID: 33896442 DOI: 10.1017/ice.2021.111] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To determine patient-specific risk factors and clinical outcomes associated with contaminated blood cultures. DESIGN A single-center, retrospective case-control risk factor and clinical outcome analysis performed on inpatients with blood cultures collected in the emergency department, 2014-2018. Patients with contaminated blood cultures (cases) were compared to patients with negative blood cultures (controls). SETTING A 509-bed tertiary-care university hospital. METHODS Risk factors independently associated with blood-culture contamination were determined using multivariable logistic regression. The impacts of contamination on clinical outcomes were assessed using linear regression, logistic regression, and generalized linear model with γ log link. RESULTS Of 13,782 blood cultures, 1,504 (10.9%) true positives were excluded, leaving 1,012 (7.3%) cases and 11,266 (81.7%) controls. The following factors were independently associated with blood-culture contamination: increasing age (adjusted odds ratio [aOR], 1.01; 95% confidence interval [CI], 1.01-1.01), black race (aOR, 1.32; 95% CI, 1.15-1.51), increased body mass index (BMI; aOR, 1.01; 95% CI, 1.00-1.02), chronic obstructive pulmonary disease (aOR, 1.16; 95% CI, 1.02-1.33), paralysis (aOR 1.64; 95% CI, 1.26-2.14) and sepsis plus shock (aOR, 1.26; 95% CI, 1.07-1.49). After controlling for age, race, BMI, and sepsis, blood-culture contamination increased length of stay (LOS; β = 1.24 ± 0.24; P < .0001), length of antibiotic treatment (LOT; β = 1.01 ± 0.20; P < .001), hospital charges (β = 0.22 ± 0.03; P < .0001), acute kidney injury (AKI; aOR, 1.60; 95% CI, 1.40-1.83), echocardiogram orders (aOR, 1.51; 95% CI, 1.30-1.75) and in-hospital mortality (aOR, 1.69; 95% CI, 1.31-2.16). CONCLUSIONS These unique risk factors identify high-risk individuals for blood-culture contamination. After controlling for confounders, contamination significantly increased LOS, LOT, hospital charges, AKI, echocardiograms, and in-hospital mortality.
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Ross G, Pasquill K, Steele L, Parfitt EC, Laupland KB. Determinants and outcomes of bloodstream infection in adults associated with one versus two sets of positive index blood cultures. Clin Microbiol Infect 2021; 27:1856.e1-1856.e5. [PMID: 33813121 DOI: 10.1016/j.cmi.2021.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/17/2021] [Accepted: 03/22/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To investigate whether positivity in one or both index sets of blood cultures influences clinical determinants and mortality when diagnosing bloodstream infections (BSI). METHODS Retrospective population-based surveillance of all mono-microbial BSI was conducted among residents of the western interior of British Columbia. Clinical details were obtained by chart review and all-cause case-fatality was established at 30 days. Index cultures were defined as the first two sets of cultures initially drawn to diagnose incident BSI. RESULTS A total of 2500 incident BSI were identified of which 945 (37.8%) and 1555 (62.2%) were based on one and two positive index cultures, respectively. There was an overall difference in the distribution of pathogens, with both Staphylococcus aureus and Streptococcus pneumoniae more likely to have two positive index cultures. Different foci of infection were associated with one versus two positive index cultures. Overall, 409 patients died within 30 days of index BSI for an all-cause case-fatality of 16.4%; with no difference between two positive (250/1555; 16.1%) and one positive (159/945; 16.8%; p 0.3) index blood culture. The number of positive index blood cultures was not associated with 30-day case-fatality after adjustment for confounding variables using logistic regression analysis. CONCLUSIONS Although approximately one-third of BSI are diagnosed on the basis of a single positive blood culture and are associated with different clinical determinants, whether one or both index blood cultures are positive is not associated with lethal outcome.
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Affiliation(s)
- Georgia Ross
- Department of Intensive Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Kelsey Pasquill
- Department of Pathology and Laboratory Medicine, Royal Inland Hospital, Kamloops, BC, Canada
| | - Lisa Steele
- Department of Pathology and Laboratory Medicine, Royal Inland Hospital, Kamloops, BC, Canada
| | | | - Kevin B Laupland
- Department of Intensive Care Services, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia; Department of Medicine, Royal Inland Hospital, Kamloops, BC, Canada; Faculty of Health, Queensland University of Technology (QUT), Brisbane, QLD, Australia.
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Central Line Care and Management: Adopting Evidence-Based Nursing Interventions. J Perianesth Nurs 2021; 36:328-333. [PMID: 33771443 DOI: 10.1016/j.jopan.2020.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 11/23/2022]
Abstract
Central line-associated bloodstream infections occur not only in the intensive care unit but also the non-intensive care units of the hospital. The purpose of this article is to review current evidence to guide perianesthesia nurses in the care of a patient with a central vascular access device (CVAD). The CVAD bundle focuses on five key elements: hand hygiene, maximal sterile barrier, chlorhexidine antiseptic, catheter site selection, and daily evaluation of the need for the device. Once the CVAD is placed, evidence-based care and maintenance are the responsibility of the nurse. Ensuring proper maintenance and care of a CVAD falls within nursing practice and interventions can significantly reduce the patient's risk of central line-associated bloodstream infection. The single most crucial step a nurse can take to help prevent central line-associated bloodstream infections is performing proper hand hygiene. Other interventions focus on dressing management, bathing practices, access of intravenous infusion sets, blood draws, and management of port line occlusions. Familiarity and adoption of best practice interventions in the maintenance and care of patients with CVADs will help the perianesthesia nurse protect patients and prevent harm.
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Buzard BA, Evans P, Schroeder T. Evaluation of an Initial Specimen Diversion Device (ISDD) on Rates of Blood Culture Contamination in the Emergency Department. Kans J Med 2021; 14:73-76. [PMID: 33763182 PMCID: PMC7984743 DOI: 10.17161/kjm.vol1413804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 01/05/2021] [Indexed: 11/17/2022] Open
Abstract
Introduction Blood cultures are the gold standard for identifying bloodstream infections. The Clinical and Laboratory Standards Institute recommends a blood culture contamination rate of less than 3%. Contamination can lead to misdiagnosis, increased length of stay and hospital costs, unnecessary testing, and antibiotic use. These reasons led to the development of initial specimen diversion devices (ISDD). The purpose of this study was to evaluate the impact of an initial specimen diversion device on rates of blood culture contamination in the emergency department. Methods This was a retrospective, multi-site study including patients who had blood cultures drawn in an emergency department. February 2018 to April 2018, when an ISDD was not utilized, was compared with June 2019 to August 2019, when an ISDD was being used. The primary outcome was total blood culture contamination. Secondary outcomes were total hospital cost, hospital and intensive care unit length of stay, vancomycin duration of use, vancomycin serum concentrations obtained, and repeat blood cultures obtained. Results A statistically significant difference was found in blood culture contamination rates in the pre-ISDD group vs. the ISDD group (7.47% vs. 2.59%, p < 0.001). None of the secondary endpoints showed a statistically significant difference. Conclusions Implementation of an ISDD reduced blood culture contamination. When implementing the ISDD to a healthcare system, compliance is important and will affect contamination rates dramatically.
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Affiliation(s)
| | - Patrick Evans
- Ascension Via Christi St. Francis Hospital, Wichita, KS
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47
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[S3 Guideline Sepsis-prevention, diagnosis, therapy, and aftercare : Long version]. Med Klin Intensivmed Notfmed 2021; 115:37-109. [PMID: 32356041 DOI: 10.1007/s00063-020-00685-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Indwelling Device-Associated Biofilms in Critically Ill Cancer Patients-Study Protocol. Pathogens 2021; 10:pathogens10030306. [PMID: 33800769 PMCID: PMC8001301 DOI: 10.3390/pathogens10030306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 11/26/2022] Open
Abstract
Health care-associated infections are a leading cause of inpatient complications. Rapid pathogen detection/identification is a major challenge in sepsis management that highly influences the successful outcome. The current standard of microorganism identification relies on bacterial growth in culture, which has several limitations. Gene sequencing research has developed culture-independent techniques for microorganism identification, with the aim to improve etiological diagnosis and, therefore, to change sepsis outcome. A prospective, observational, non-interventional, single-center study was designed that assesses biofilm-associated pathogens in a specific subpopulation of septic critically ill cancer patients. Indwelling device samples will be collected in septic patients at the moment of the removal of the arterial catheter, central venous catheter, endotracheal tube and urinary catheter. Concomitantly, clinical data regarding 4 sites (nasal, pharyngeal, rectal and skin) of pathogen colonization at the time of hospital/intensive care admission will be collected. The present study aims to offer new insights into biofilm-associated infections and to evaluate the infection caused by catheter-specific and patient-specific biofilm-associated pathogens in association with the extent of colonization. The analysis relies on the two following detection/identification techniques: standard microbiological method and next generation sequencing (NGS). Retrospectively, the study will estimate the clinical value of the NGS-based detection and its virtual potential in changing patient management and outcome, notably in the subjects with missing sepsis source or lack of response to anti-infective treatment.
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Arenas M, Boseman GM, Coppin JD, Lukey J, Jinadatha C, Navarathna DH. Asynchronous Testing of 2 Specimen-Diversion Devices to Reduce Blood Culture Contamination: A Single-Site Product Supply Quality Improvement Project. J Emerg Nurs 2021; 47:256-264.e6. [PMID: 33431137 DOI: 10.1016/j.jen.2020.11.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/13/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Blood culture contamination above the national threshold has been a consistent clinical issue in the ED setting. Two commercially available devices were examined that divert an initial small volume of the specimen before the collection of blood culture to reduce skin contamination. METHODS Prospectively, 2 different blood culture-diversion devices were made available in the unit supplies to ED clinicians at a single site during 2 different periods of time as a follow-up strategy to an ongoing quality improvement project. Blood samples were collected in the emergency department over a period of 16 months. A retrospective record review study was conducted comparing the use of the 2 specimen-diversion devices with no device (control group) for blood culture contamination rates. The main outcome of monthly blood culture contamination per device was tested using a Bayesian Poisson multilevel regression model. RESULTS A total of 4030 blood samples were collected and analyzed from November 2017 to February 2019. The model estimated that the mean incidence of contaminated blood draws in the device A group was 0.29 (0.14-0.55) times the incidence of contaminated draws in the control group. The mean incidence of contaminated blood draws in the device B group was 0.23 (0.13-0.37) times the incidence of contaminated draws in the control group, suggesting that initial-diversion methods reduced blood culture contamination. CONCLUSION Initial specimen-diversion devices supplement present standard phlebotomy protocols to bring down the blood culture contamination rate.
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Incidence of Bacteremia Consequent to Different Endoscopic Procedures in Dogs: A Preliminary Study. Animals (Basel) 2020; 10:ani10122265. [PMID: 33271911 PMCID: PMC7760813 DOI: 10.3390/ani10122265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/24/2020] [Accepted: 11/30/2020] [Indexed: 11/16/2022] Open
Abstract
Endoscopic procedures are widely used in veterinary medicine, and their role in producing transient bacteremia is debatable. The growing issue of antibiotic resistance requires the correct use of antibiotics, avoiding their administration when not strictly necessary. Studies highlighting post-endoscopy bacteremia in veterinary medicine are extremely rare and often involve very few animals. This study describes the results from 74 owned dogs, brought to the Veterinary Teaching Hospital of the Department of Veterinary Medical Science of the University of Bologna, for the purpose of undergoing an endoscopic procedure. Two blood samples were taken from each dog, one before and one after the procedure, in order to assess the incidence of bacteremia linked to endoscopic procedures. Eight dogs were tested positive at the second blood culture with an Incidence Risk (IR) of 10.8%. No statistical differences were found by comparing positive and negative blood cultures with respect to sex, age, weight and anesthesia duration. In addition, no difference was found between airway and digestive tract procedures. The present findings showed that the probability of developing bacteremia after an endoscopic procedure was quite low, and additional studies confirming this are certainly recommended as well as the evaluation of categories of patients potentially considered at risk.
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