Evidence map›Paper›PMID 21989980›Full record

ArticlePediatric radiology2012

Urea cycle disorders: brain MRI and neurological outcome.

William R Bireley, Johan L K Van Hove, Renata C Gallagher, Laura Z Fenton

Abstract readCase Reports
PubMed Publisher
In one paragraph

Article in Pediatric radiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.9field-weighted citation impact, top 16% 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

16 citing papers in PubMed, 45 citations in OpenAlex.

  1. Review
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  4. ClinicalNeuroradiology · 2022
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  13. Neonatal neuroimaging findings in inborn errors of metabolism.Journal of magnetic resonance imaging : JMRI · 2013
    Review
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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

4 authors at 3 institutions in 1 country.

William R BireleyDepartment of Radiology, University of Colorado, 12631 E. 17th Ave., Aurora, CO 80045, USA. william.bireley@ucdenver.edu
Johan L K Van Hove
Renata C Gallagher
Laura Z Fenton
Children's Hospital Colorado · USUniversity of Colorado Boulder · USUniversity of Colorado Denver · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundUrea cycle disorders encompass several enzyme deficiencies that can result in cerebral damage, with a wide clinical spectrum from asymptomatic to severe.

objectiveThe goal of this study was to correlate brain MRI abnormalities in urea cycle disorders with clinical neurological sequelae to evaluate whether MRI abnormalities can assist in guiding difficult treatment decisions. MATERIALS AND

methodsWe performed a retrospective chart review of patients with urea cycle disorders and symptomatic hyperammonemia. Brain MRI images were reviewed for abnormalities that correlated with severity of clinical neurological sequelae.

resultsOur case series comprises six urea cycle disorder patients, five with ornithine transcarbamylase deficiency and one with citrullinemia type 1. The observed trend in distribution of brain MRI abnormalities as the severity of neurological sequelae increased was the peri-insular region first, extending into the frontal, parietal, temporal and, finally, the occipital lobes. There was thalamic restricted diffusion in three children with prolonged hyperammonemia. Prior to death, this site is typically reported to be spared in urea cycle disorders.

conclusionThe pattern and extent of brain MRI abnormalities correlate with clinical neurological outcome in our case series. This suggests that brain MRI abnormalities may assist in determining prognosis and helping clinicians with subsequent treatment decisions.

Indexed as

BrainBrain DiseasesChildChild, PreschoolFemaleHumansInfantInfant, NewbornMagnetic Resonance ImagingMaleNervous System DiseasesReproducibility of ResultsSensitivity and SpecificityUrea Cycle Disorders, Inborn

Identifiers

PMID21989980
OpenAlexW1994301952

What OpenQuestion holds

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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.