Evidence map›Paper›PMID 30212837›Full record

ArticleNephron2018

Role of Albumin Assay on Calcium Levels and Prescription of Phosphate Binders in Chronic Hemodialysis Patients.

Camiel L M de Roij van Zuijdewijn, Dinky E de Haseth, Bastiaan van Dam, Willem A Bax, Muriel P C Grooteman, Michiel L Bots, Peter J Blankestijn, Menso J Nubé, Marinus A van den Dorpel, Pieter M Ter Wee and 1 more

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in Nephron, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.6field-weighted citation impact, top 33% 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

3 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Review
  3. 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

11 authors at 6 institutions in 2 countries.

Camiel L M de Roij van ZuijdewijnAmsterdam UMC, Vrije Universiteit Amsterdam, Department of Nephrology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands.
Dinky E de HasethDepartment of Internal Medicine, Northwest Clinics, Alkmaar, the Netherlands.
Bastiaan van DamDepartment of Internal Medicine, Northwest Clinics, Alkmaar, the Netherlands.
Willem A BaxDepartment of Internal Medicine, Northwest Clinics, Alkmaar, the Netherlands.
Muriel P C GrootemanAmsterdam UMC, Vrije Universiteit Amsterdam, Department of Nephrology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands.
Michiel L BotsJulius Center for Health Sciences and Primary Care, University Medical Center, Utrecht University, Utrecht, the Netherlands.
Peter J BlankestijnDepartment of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Menso J NubéAmsterdam UMC, Vrije Universiteit Amsterdam, Department of Nephrology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands.
Marinus A van den DorpelDepartment of Internal Medicine, Maasstad Hospital, Rotterdam, the Netherlands.
Pieter M Ter WeeAmsterdam UMC, Vrije Universiteit Amsterdam, Department of Nephrology, Amsterdam Cardiovascular Sciences, Amsterdam, the Netherlands.
Erik L PenneDepartment of Internal Medicine, Northwest Clinics, Alkmaar, the Netherlands.
Northwest Hospital · USVrije Universiteit Amsterdam · NLAmsterdam University Medical Centers · NLMaasstad Ziekenhuis · NLUniversity Medical Center Utrecht · NLUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsIn hemodialysis (HD) patients, the bromcresol green (BCG) assay overestimates, whereas the bromcresol purple (BCP) assay underestimates albumin concentration. Since corrected calcium concentrations depend on albumin, the albumin assay may have implications for the management of bone mineral disorders.

methodsA subset of patients from CONTRAST, a cohort of prevalent HD patients, was analyzed. Bone mineral parameters and prescription of medication were compared between patients in whom albumin was assessed by BCP versus BCG.

resultsAlbumin was assessed by BCP in 331 patients (9 of 25 centers) and by BCG in 175 patients (16 of 25 centers). Albumin was the lowest in the BCP group (34.5 ± 4.2 vs. 40.3 ± 3.1 g/L; p < 0.0005). Measured calcium levels and the prescription of calcium-based phosphate binders were similar in both groups. Corrected calcium levels, however, were markedly higher in the BCP group (2.45 ± 0.18 vs. 2.33 ± 0.18 mmol/L; p < 0.0005).

conclusionThese findings suggest that calcium levels are not corrected for albumin in clinical practice when considering the prescription of calcium-free or calcium-based phosphate-binders in dialysis patients.

Indexed as

Renal DialysisAgedAlbuminuriaCalciumCross-Sectional StudiesFemaleHumansKidney Failure, ChronicMaleMiddle AgedPhosphatesCalciumPhosphatesAlbuminAssayCalciumChronic kidney disease-mineral and bone disorderHemodialysisPhosphate-binding agents

Identifiers

PMID30212837
PMCPMC6262677
OpenAlexW2890676612

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.