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Blood culture contamination rate

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https://www.readbyqxmd.com/read/29165580/role-of-anaerobic-blood-cultures-in-neonatal-bacteremia
#1
Nathan Messbarger, Kari Neemann
Background: Evaluation for neonatal sepsis routinely includes performing both aerobic and anaerobic blood cultures despite our lack of knowledge of the true incidence of anaerobic bacteremia in this age group and the consequences of not performing these paired cultures. Methods: We performed a retrospective review of all blood cultures performed for neonates in a children's hospital. Clinically significant pathogens were defined as microorganisms that rarely are considered to be contaminants, that were recovered from multiple blood cultures or sites, or were considered significant according to the patient's attending physician...
November 20, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/29153062/-diagnostic-accuracy-of-the-lightcycler%C3%A2-septifast-assay-in-the-childhood-febrile-neutropenia
#2
Esra Mimaroğlu, Elvan Çağlar Çıtak, Necdet Kuyucu, Gönül Arslan
Infection is the main problem among the patients receiving cancer therapy. The mortality rate can be reduced by the appropriate treatment in the right time. Although blood culture is the gold standard for the diagnoses of sepsis, many factors influence the results of blood culture in children. For this reason, real time polymerase chain reaction (Rt-PCR) has gained importance for the diagnoses of microbiological agents as it is faster than the conventional methods. In this study, we aimed to compare the efficacy of SeptiFast (SF) test with blood culture among children with neutropenic fever...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28980274/neutrophil-gelatinase-associated-lipocalin-a-biomarker-for-early-diagnosis-of-urinary-tract-infections-in-infants
#3
Grażyna Krzemień, Małgorzata Pańczyk-Tomaszewska, Dominika Adamczuk, Iwona Kotuła, Urszula Demkow, Agnieszka Szmigielska
Early diagnosis of urinary tract infection (UTI) is challenging in infants due to unspecific symptoms, difficulty in urine collection and possible contamination. The aim of this study was to assesses the usefulness of serum and urine neutrophil gelatinase-associated lipocalin (sNGAL and uNGAL, respectively) in the diagnosis of febrile and non-febrile UTI in infants. This prospective observational study enrolled 66 infants with the first episode of UTI and 18 healthy controls. At the time of enrollment, sNGAL, uNGAL, urinalysis, urine culture, white blood cell count (WBC), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), procalcitonin (PCT), and serum creatinine (sCr) were assessed...
October 5, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28960897/a-uniform-shear-rate-microfluidic-bioreactor-for-real-time-study-of-proplatelet-formation-and-rapidly-released-platelets
#4
Andres F Martinez, Richard D McMahon, Marc Horner, William M Miller
Platelet transfusions, with profound clinical importance in blood clotting and wound healing, are entirely derived from human volunteer donors. Hospitals rely on a steady supply of donations, but these methods are limited by a 5-day shelf life, the potential risk of contamination, and differences in donor/recipient histocompatibility. These challenges invite the opportunity to generate platelets ex vivo. Although much progress has been made in generating large numbers of culture-derived megakaryocytes (Mks, the precursor cells to platelets), stimulating a high percentage of Mks to undergo platelet release remains a major challenge...
September 27, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28952159/bacterial-testing-of-platelets-has-it-prevented-transfusion-transmitted-bacterial-infections-in-australia
#5
J Thyer, Z Perkowska-Guse, S L Ismay, A J Keller, H T Chan, P M Dennington, B Bell, G Kotsiou, J M Pink
BACKGROUND AND OBJECTIVES: Australia introduced bacterial contamination screening (BCS) for platelet components in April 2008. This study presents analysis performed to assess the efficacy of testing. MATERIALS AND METHODS: Seven-day aerobic and anaerobic culture is performed using the BacT/ALERT 3D system. Following an initial machine positive (IMP) flag, all associated components are recalled, and/or clinicians treating already transfused patients are notified...
September 26, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28885399/clinical-risk-factors-associated-with-peripartum-maternal-bacteremia
#6
Sarah Rae Easter, Rose L Molina, Kartik K Venkatesh, Anjali Kaimal, Ruth Tuomala, Laura E Riley
OBJECTIVE: To evaluate risk factors associated with maternal bacteremia in febrile peripartum women. METHODS: We performed a case-control study of women with fevers occurring between 7 days before and up to 42 days after delivery of viable neonates at two academic hospitals. Women with positive blood cultures were matched with the next two febrile women meeting inclusion criteria with negative blood cultures in the microbiology data without other matching parameters...
October 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28835382/utility-of-blood-culture-among-children-hospitalized-with-community-acquired-pneumonia
#7
MULTICENTER STUDY
Mark I Neuman, Matthew Hall, Susan C Lipsett, Adam L Hersh, Derek J Williams, Jeffrey S Gerber, Thomas V Brogan, Anne J Blaschke, Carlos G Grijalva, Kavita Parikh, Lilliam Ambroggio, Samir S Shah
BACKGROUND AND OBJECTIVES: National guidelines recommend blood cultures for children hospitalized with presumed bacterial community-acquired pneumonia (CAP) that is moderate or severe. We sought to determine the prevalence of bacteremia and characterize the microbiology and penicillin-susceptibility patterns of positive blood culture results among children hospitalized with CAP. METHODS: We conducted a cross-sectional study of children hospitalized with CAP in 6 children's hospitals from 2007 to 2011...
September 2017: Pediatrics
https://www.readbyqxmd.com/read/28777419/the-neutraclear%C3%A2-needleless-connector-is-equally-effective-against-catheter-colonization-compared-to-microclave%C3%A2
#8
María Guembe, María Jesús Pérez Granda, Raquel Cruces, Luis Alcalá, Emilio Bouza
INTRODUCTION: Neutral-valve closed-system connectors can reduce the frequency of catheter colonization. Commercially available closed system connectors need to be tested and compared with each other to assess how they protect against contamination. We aimed to compare, in vitro, the efficacy of connectors NeutraClear® and MicroClave® against contamination under conditions of daily clinical practice. METHODS: The model consisted of a set of 200 blood culture bottles (BCBs) with a cannula inserted (100 closed with NeutraClear® and 100 closed with MicroClave®) that were assessed in two experiments while instilling 1 mL of saline: manipulation based on the standard of care and manipulation using gloves impregnated with a 0...
July 29, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/28735318/trends-of-bloodstream-infections-in-a-university-greek-hospital-during-a-three-year-period-incidence-of-multidrug-resistant-bacteria-and-seasonality-in-gram-negative-predominance
#9
Fevronia Kolonitsiou, Matthaios Papadimitriou-Olivgeris, Anastasia Spiliopoulou, Vasiliki Stamouli, Vasileios Papakostas, Eleni Apostolopoulou, Christos Panagiotopoulos, Markos Marangos, Evangelos D Anastassiou, Myrto Christofidou, Iris Spiliopoulou
The aim of the study was to assess the epidemiology, the incidence of multidrug-resistant bacteria and bloodstream infections' (BSIs) seasonality in a university hospital. This retrospective study was carried out in the University General Hospital of Patras, Greece, during 2011-13 y. Blood cultures from patients with clinical presentation suggestive of bloodstream infection were performed by the BacT/ALERT System. Isolates were identified by Vitek 2 Advanced Expert System. Antibiotic susceptibility testing was performed by the disk diffusion method and E-test...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28702307/childhood-pneumonia-and-meningitis-in-the-eastern-highlands-province-papua-new-guinea-in-the-era-of-conjugate-vaccines-study-methods-and-challenges
#10
Christopher C Blyth, Rebecca Ford, Joycelyn Sapura, Tonny Kumani, Geraldine Masiria, John Kave, Lapule Yuasi, Andrew Greenhill, Ilomo Hwaihwanje, Amanda Lang, Deborah Lehmann, William Pomat
BACKGROUND: Pneumonia and meningitis are common causes of severe childhood illness in Papua New Guinea (PNG). The etiology of both clinical conditions in PNG has not been recently assessed. Changes in lifestyle, provision and access to healthcare, antimicrobial utilization and resistance, and the national childhood vaccination schedule necessitate reassessment. METHODS: A prospective case-control study was undertaken, enrolling children <5 years of age to determine the contemporary etiology of clinically defined moderate or severe pneumonia or suspected meningitis...
2017: Pneumonia
https://www.readbyqxmd.com/read/28653472/residual-risk-of-bacterial-contamination-of-platelets-six-years-of-experience-with-sterility-testing
#11
Sandra Ramirez-Arcos, Caesar DiFranco, Terri McIntyre, Mindy Goldman
BACKGROUND: Canadian Blood Services screens 100% of platelet concentrates (PCs) for bacterial contamination with the BacT/ALERT system. Quality-control sterility testing of 1% (≥10 units) of outdated PCs is performed monthly. Data from routine screening, quality-control testing, and septic reactions obtained from 2010 to 2016 are presented herein. STUDY DESIGN AND METHODS: In total, 601,988 buffy coat PC pools and 186,737 apheresis PCs were routinely screened with aerobic cultures over 6 years...
September 2017: Transfusion
https://www.readbyqxmd.com/read/28558478/bacteria-on-urine-microscopy-is-not-associated-with-systemic-infection-in-patients-with-obstructing-urolithiasis
#12
Felix Cheung, Charles A Loeb, Michael P Croglio, Wayne C Waltzer, Steven J Weissbart
INTRODUCTION: Determining whether bacterial presence in urine microscopy represents infection is important as ureteral stent placement is indicated in patients with obstructing urolithiasis and infection. We aim to investigate whether the presence of bacteria on urine microscopy is associated with other markers of infection in patients with obstructing urolithiasis presenting to the emergency room. METHODS: We performed a cross-sectional study of 199 patients with obstructing urolithiasis and divided patients into two groups according to the presence of bacteria on urine microscopy...
June 27, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28539343/multicenter-clinical-evaluation-of-bact-alert-virtuo-blood-culture-system
#13
Michael R Jacobs, Tony Mazzulli, Kevin C Hazen, Caryn E Good, Ayman M Abdelhamed, Pauline Lo, Bianche Shum, Katharine P Roman, Danielle C Robinson
BacT/Alert Virtuo is an advanced, automated blood culture system incorporating improved automation and an enhanced detection algorithm to shorten time to detection. A multicenter study of the investigational Virtuo system (bioMérieux, Inc., Durham, NC) compared to BacT/Alert 3D (BTA3D) for detection of bacteremia/fungemia in four bottle types, SA and FA Plus (aerobic) and SN and FN Plus (anaerobic), was performed in a clinical setting with patient samples in a matched system design clinical trial. Blood was added to paired aerobic or anaerobic bottles, with the volume in each bottle in each pair required to be ≤10 ml and with the volumes required to be within 30% of each other...
August 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28491246/significance-of-coagulase-negative-staphylococcus-from-blood-cultures-persisting-problems-and-partial-progress-in-resource-constrained-settings
#14
Shailpreet K Sidhu, Sita Malhotra, Pushpa Devi, Arpandeep K Tuli
BACKGROUND AND OBJECTIVES: Coagulase negative Staphylococcus (CoNS) is frequently isolated from blood cultures but their significance is difficult to interpret. CoNS bacteria which are often previously dismissed as culture contaminants are attracting greater importance as true pathogens in the past decades. Clinical evaluation of these isolates suggests that although there is a relative increase of CoNS associated bloodstream infections in recent years, the microorganisms still remain the most common contaminants in blood cultures...
December 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/28425610/bacterial-screening-of-platelet-components-by-national-health-service-blood-and-transplant-an-effective-risk-reduction-measure
#15
Carl McDonald, Jennifer Allen, Susan Brailsford, Anjana Roy, Joanne Ball, Richard Moule, Mariza Vasconcelos, Rachael Morrison, Tyrone Pitt
BACKGROUND: Bacterial contamination of blood components remains a major cause of sepsis in transfusion medicine. Between 2006 and 2010 in the 5 years before the introduction of bacterial screening of platelet (PLT) components by National Health Service Blood and Transplant (NHSBT), seven cases of PLT component-associated transmission of bacterial infection were recorded for 10 patients, three of which were fatal. STUDY DESIGN AND METHODS: Sampling of individual PLT components was undertaken at 36 to 48 hours after donation and tested in the BacT/ALERT system with 8 mL inoculated into each of aerobic and anaerobic culture bottles...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28397472/comparison-of-novel-blood-culture-system-dl-bt112tm-with-bact-alert-3dtm-by-using-clinical-samples
#16
COMPARATIVE STUDY
Mustafa Altindis, Tayfur Demiray, Mehmet Koroglu, Umit Kilic, Aybala Neslihan Alagoz, Aziz Ogutlu, Oguz Karabay
BACKGROUND: Blood cultures are the main diagnostic laboratory tool to detect bloodstream infections. Many clinical microbiology laboratories utilize automated blood culture systems to isolate infectious agents from blood samples. The diagnostic performance and time-to-detection values of the novel automated blood culture system, DLBt112TM (DL), was compared with BacT/Alert 3DTM (B3D) in this prospective comparative study with clinical samples. METHODS: A total of 356 blood culture sets (178 sets for each system) were evaluated over a 6-month period in a university hospital...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28379370/reduction-in-blood-culture-contamination-through-use-of-initial-specimen-diversion-device
#17
Mark E Rupp, R Jennifer Cavalieri, Cole Marolf, Elizabeth Lyden
Background: Blood culture contamination is a clinically significant problem that results in patient harm and excess cost. Methods: In a prospective, controlled trial at an academic center Emergency Department, a device that diverts and sequesters the initial 1.5-2 mL portion of blood (which presumably carries contaminating skin cells and microbes) was tested against standard phlebotomy procedures in patients requiring blood cultures due to clinical suspicion of serious infection...
July 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28277262/eliminating-blood-culture-false-positives-harnessing-the-power-of-nursing-shared-governance
#18
Dawn Moeller
Our emergency department struggled with unacceptable blood culture contamination rates for several years. The objective of this project was to create a self-governing culture within nursing that would generate and sustain the achievement of monthly blood culture contamination rates below the national benchmark of 3% and the hospital laboratory acceptable threshold of 2.3%. METHODS: The ED shared governance council partnered with the laboratory team to review the monthly epidemiology reports for all adult and pediatric ED patients having blood cultures performed from January 2010 through December 2015...
October 26, 2016: Journal of Emergency Nursing: JEN: Official Publication of the Emergency Department Nurses Association
https://www.readbyqxmd.com/read/28243751/septifast-versus-blood-culture-in-clinical-routine-a-report-on-3-years-experience
#19
Florian Korber, Iris Zeller, Michaela Grünstäudl, Birgit Willinger, Petra Apfalter, Alexander M Hirschl, Athanasios Makristathis
BACKGROUND: In recent years a multiplex real-time PCR (SeptiFast) has been introduced, allowing detection of 25 common blood pathogens considerably faster than conventional blood culture. METHODS: SeptiFast was applied routinely in addition to blood culture in cases of critically ill patients with fever and other signs of severe systemic infections. In this study data of 470 episodes were retrospectively analysed to assess the impact of various parameters, such as clinical indications, assigning ward and antimicrobial treatment on test outcome using a multivariate logistic model...
June 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28215967/leukocyte-esterase-strip-test-can-predict-subsequent-failure-following-reimplantation-in-patients-with-periprosthetic-joint-infection
#20
Michael M Kheir, Colin T Ackerman, Timothy L Tan, Andrea Benazzo, Eric H Tischler, Javad Parvizi
BACKGROUND: Leukocyte esterase (LE) strip test is an accurate marker for diagnosing periprosthetic joint infection (PJI). This study aims to determine if LE is a good predictor of persistent infection and/or subsequent failure in patients undergoing reimplantation. METHODS: This single-institution study prospectively recruited and retrospectively analyzed 109 patients who underwent two-stage exchange treatment of PJI, from 2009-2016, and had an LE test performed at time of reimplantation...
January 26, 2017: Journal of Arthroplasty
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