Evidence map›Paper›PMID 29134449›Full record

Trial reportPediatric nephrology (Berlin, Germany)2018

Iohexol plasma clearance in children: validation of multiple formulas and single-point sampling times.

Camilla Tøndel, Cathrin Lytomt Salvador, Karl Ove Hufthammer, Bjørn Bolann, Damien Brackman, Anna Bjerre, Einar Svarstad, Atle Brun

Registry-linked trialOpen access · hybridAbstract readClinical TrialValidation Study
In one paragraph

Trial report in Pediatric nephrology (Berlin, Germany), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01092260 (Glomerular Filtration Rate in Children - a Methodological Study With Iohexol Clearance), which is not on this map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.9field-weighted citation impact, top 15% 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.

NCT01092260 completednot on this map

Glomerular Filtration Rate in Children - a Methodological Study With Iohexol Clearance

TypeobservationalSponsorHaukeland University HospitalRan2010 to 2011Enrolled96ConditionsRenal Function Disorder
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 29 citations in OpenAlex.

  1. Trial
  2. Review
  3. Glomerular Filtration Rate Assessment in Children.Children (Basel, Switzerland) · 2022
    Review
  4. Article
  5. Article
  6. Article
  7. Observational
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

8 authors at 2 institutions in 1 country.

Camilla TøndelDepartment of Pediatrics, Haukeland University Hospital, 5021, Bergen, Norway. camilla.tondel@helse-bergen.no.ORCID 0000-0003-3389-3194
Cathrin Lytomt SalvadorDepartment of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.
Karl Ove HufthammerCentre for Clinical Research, Haukeland University Hospital, Bergen, Norway.
Bjørn BolannLaboratory for Clinical Biochemistry, Haukeland University Hospital, Bergen, Norway.
Damien BrackmanDepartment of Pediatrics, Haukeland University Hospital, 5021, Bergen, Norway.
Anna BjerreDepartment of Pediatrics, Oslo University Hospital, Oslo, Norway.
Einar SvarstadDepartment of Clinical Medicine, University of Bergen, Bergen, Norway.
Atle BrunLaboratory for Clinical Biochemistry, Haukeland University Hospital, Bergen, Norway.
Haukeland University Hospital · NOOslo University Hospital · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe non-ionic agent iohexol is increasingly used as the marker of choice for glomerular filtration rate (GFR) measurement. Estimates of GFR in children have low accuracy and limiting the number of blood-draws in this patient population is especially relevant. We have performed a study to evaluate different formulas for calculating measured GFR based on plasma iohexol clearance with blood sampling at only one time point (GFR1p) and to determine the optimal sampling time point.

methodsNinety-six children with chronic kidney disease (CKD) stage 1-5 (median age 9.2 years; range 3 months to 17.5 years) were examined in a cross-sectional study using iohexol clearance and blood sampling at seven time points within 5 h (GFR7p) as the reference method. Median GFR7p was 66 (range 6-153) mL/min/1.73 m

resultsThe GFR1p calculated according to Fleming with sampling at 3 h (GFR1p

conclusionsFor determination of mGFR in children with CKD and an assumed GFR of ≥ 30 mL/min/1.73 m CLINICAL

trial registrationClinicalTrials.gov , Identifier NCT01092260, https://clinicaltrials.gov/ct2/show/NCT01092260?term=tondel&rank=2.

Indexed as

AdolescentChildChild, PreschoolCross-Sectional StudiesFemaleGlomerular Filtration RateHumansInfantIohexolKidneyMaleMetabolic Clearance RateRenal Insufficiency, ChronicIohexolChildrenChronic kidney diseaseGlomerular filtration rateRenal function

Identifiers

PMID29134449
PMCPMC5859061
OpenAlexW2471885789

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.