Evidence map›Paper›PMID 28539343›Full record

ArticleJournal of clinical microbiology2017

Multicenter Clinical Evaluation of BacT/Alert Virtuo Blood Culture System.

Michael R Jacobs, Tony Mazzulli, Kevin C Hazen, Caryn E Good, Ayman M Abdelhamed, Pauline Lo, Bianche Shum, Katharine P Roman, Danielle C Robinson

Abstract readEvaluation StudyMulticenter Study
In one paragraph

Article in Journal of clinical microbiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed.

  1. Trial
  2. Article
  3. Observational
  4. Situation and questions regarding the practice of blood cultures in paediatric patients: an opinion paper.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Impact of 24/7 loading of blood culture bottles in a new automated incubator on the diagnosis of bloodstream infections.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2021
    Article
  19. Article
  20. Comparison of time-to-positivity between two blood culture systems: a detailed analysis down to the genus-level.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2021
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Michael R JacobsDepartment of Pathology, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA michael.jacobs@case.edu.
Tony MazzulliDepartment of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.
Kevin C HazenDepartment of Pathology, Clinical Microbiology Laboratory, Duke University, Durham, North Carolina, USA.
Caryn E GoodDepartment of Pathology, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA.
Ayman M AbdelhamedDepartment of Pathology, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA.
Pauline LoDepartment of Microbiology, Mount Sinai Hospital/University Health Network, Toronto, ON, Canada.
Bianche ShumDepartment of Microbiology, Mount Sinai Hospital/University Health Network, Toronto, ON, Canada.
Katharine P RomanDepartment of Pathology, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA.
Danielle C RobinsonDepartment of Pathology, Clinical Microbiology Laboratory, Duke University, Durham, North Carolina, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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. Of 5,709 bottle sets (52.5% aerobic pairs and 47.5% anaerobic pairs), 430 (7.5%) were positive for bacterial or fungal growth, with 342 (6.0%) clinically significant and 83 (1.5%) contaminated. A total of 3,539 sets (62.0%) were volume compliant, with 203 sets (5.7%) clinically significant. The positivity rates for volume-compliant bottle pairs determined by the two systems were comparable, with 68.7% of clinically significant isolates detected by both instruments, 15.7% by Virtuo only, and 15.7% by BTA3D only. Virtuo detected microbial growth nearly 2 h sooner overall than BTA3D (mean, 15.9 h versus 17.7 h). Shorter time to detection by Virtuo was related to organism group, with the time to detection being significantly shorter for enteric Gram-negative bacilli and enterococci (means, 3.6 h and 2.3 h shorter, respectively). This large clinical study demonstrated that the Virtuo blood culture system produced results comparable to those seen with the long-established BTA3D system, with significantly shorter time to detection.

Indexed as

AerobiosisAnaerobiosisAutomation, LaboratoryBacteremiaBlood CultureFungemiaHumansTime Factorsblood cultureVirtuo

Identifiers

PMID28539343
PMCPMC5527419

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.