Evidence map›Paper›PMID 33777369›Full record

ArticleClinical kidney journal2021

The difference between delivered and prescribed dialysate sodium in haemodialysis machines.

Ali M Shendi, Andrew Davenport

Abstract read
In one paragraph

Article in Clinical kidney journal, 2021. 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
–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

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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.

  1. Article
  2. Sodium handling in pediatric patients on maintenance dialysis.Pediatric nephrology (Berlin, Germany) · 2023
    Review
  3. Review
4 · The record

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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

2 authors.

Ali M ShendiNephrology Unit, Internal Medicine Department, Zagazig University, Zagazig, Egypt.ORCID 0000-0001-5383-1383
Andrew DavenportDepartment of Nephrology, Royal Free Hospital, University College London, London, UK.ORCID 0000-0002-4467-6833

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe choice of dialysate sodium (DNa) for haemodialysis (HD) patients remains controversial, with some studies reporting that a lower DNa improves blood pressure control and reduces intradialytic weight gain. Studies on DNa depend on the alignment of programmed to delivered DNa. We wished to determine whether there were differences between programmed and delivered DNa.

methodsDialysate samples were obtained from three dialysis machines: Fresenius 4008H (F4008H) and 5008S (F5008S) and B-Braun hemodiafiltration (HDF) Dialog+(BB). DNa was measured by indirect ion-selective electrode (ISE), flame photometry (FP) and ion chromatography (IC) at different DNa concentrations.

resultsWe tested 18 F5008S, 18 F4008H and 31 BB machines over 153 HD treatments. The median measured minus programmed DNa was significantly greater with the BB machine [ISE, 7 (6-8); FP, 7 (6-8); IC, 6 (5-7)], followed by the F4008H [ISE, 5.5 (5-7); FP, 4 (2.25-5.75); IC, 4 (2-5)]and F5008S [ISE, 4 (2-5); FP, 1 (-1-1.75); IC, 1 (-0.5 to 2)] mEq/L (P < 0.05). At higher programmed DNa (140-145 mEq/L), measured DNa was greater for the BB and F4008 machines by all methods (P < 0.05), but only by ISE for the F5008 (P < 0.05).

conclusionsWe noted a systematic bias in DNa delivery with measured DNa being greater than that programmed by our HD machines. The magnitude of the bias varied between machines and with DNa. Our results may help explain the diverse results reported in studies of DNa.

Indexed as

dialysateflame photometryhaemodialysision chromatographysodium

Identifiers

PMID33777369
PMCPMC7986319

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