Evidence map›Paper›PMID 31882799›Full record

ArticleScientific reports2019

Measurement of Retinal Microvascular Blood Velocity Using Erythrocyte Mediated Velocimetry.

Breanna M Tracey, Lakyn N Mayo, Christopher T Le, Victoria Y Chen, Julian Weichsel, Corinne Y Renner, Jiaqi Li, Joby J Tsai, Sachin P Kalarn, Michael T Ou and 9 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.3field-weighted citation impact, top 20% of its field
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

11 citing papers in PubMed, 16 citations in OpenAlex.

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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

19 authors at 5 institutions in 1 country.

Breanna M TraceyUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.ORCID http://orcid.org/0000-0001-8821-7869
Lakyn N MayoUCSF School of Medicine, San Francisco, California, United States.
Christopher T LeUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Victoria Y ChenUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Julian WeichselHeidelberg Engineering GmbH, Heidelberg, Germany.
Corinne Y RennerUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Jiaqi LiUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Joby J TsaiDonald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, United States.
Sachin P KalarnUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Michael T OuThe Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.
Luke Y ChangMedical College of Georgia, Augusta, Georgia, United States.
Taariq K MohammedUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Isa S K MohammedUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Khelly A ShahRutgers New Jersey Medical School, Newark, New Jersey, United States.
Ginger M ThompsonUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Anja M K JonesRutgers New Jersey Medical School, Newark, New Jersey, United States.
Lily T ImUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Mona A KaleemUniversity of Maryland School of Medicine, Baltimore, Maryland, United States.
Osamah J SaeediUniversity of Maryland School of Medicine, Baltimore, Maryland, United States. osaeedi@som.umaryland.edu.
University of Maryland, Baltimore · USRutgers, The State University of New Jersey · USAugusta University · USDonald & Barbara Zucker School of Medicine at Hofstra/Northwell · USJohns Hopkins University · US

Funding

Role of Capillary Flow and Autoregulation in Primary Open Angle GlaucomaK23EY025014 · NEI · UNIVERSITY OF MARYLAND BALTIMORE · PI SAEEDI, OSAMAH JAWAID · 2015 to 2019
$1.0M
NEI NIH HHS K23 EY025014
6 · The paper itself

Abstract

Changes in retinal blood flow may be involved in the pathogenesis of glaucoma and other ocular diseases. Erythrocyte mediated velocimetry (EMV) is a novel technique where indocyanine green (ICG) dye is sequestered in erythrocyte ghosts and autologously re-injected to allow direct visualization of erythrocytes for in vivo measurement of speed. The purpose of this study is to determine the mean erythrocyte speed in the retinal microvasculature, as well as the intravisit and intervisit variability of EMV. Data from 23 EMV sessions from control, glaucoma suspect, and glaucoma patients were included in this study. In arteries with an average diameter of 43.11 µm ± 6.62 µm, the mean speed was 7.17 mm/s ± 2.35 mm/s. In veins with an average diameter of 45.87 µm ± 12.04 µm, the mean speed was 6.05 mm/s ± 1.96 mm/s. Intravisit variability, as measured by the mean coefficient of variation, was 3.57% (range 0.44-9.68%). Intervisit variability was 4.85% (range 0.15-8.43%). EMV may represent reliable method for determination of retinal blood speed, potentially allowing insights into the effects of pharmacologic agents or pathogenesis of ocular diseases.

Indexed as

AgedBlood Flow VelocityCase-Control StudiesErythrocytesFemaleGlaucomaHumansIntraocular PressureMaleMicrovesselsMiddle AgedRetinal VesselsRheology

Identifiers

PMID31882799
PMCPMC6934793
OpenAlexW2998664403

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.