Evidence map›Paper›PMID 30530658›Full record

Observational studyJournal of the American Society of Nephrology : JASN2019

Investigating the Relationship between Cerebral Blood Flow and Cognitive Function in Hemodialysis Patients.

Mark Duncan Findlay, Jesse Dawson, David Alexander Dickie, Kirsten P Forbes, Deborah McGlynn, Terry Quinn, Patrick B Mark

Registry-linked trialAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Journal of the American Society of Nephrology : JASN, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07377500 (Randomised Controlled Trial of Dialysate Cooling for the Preservation of Cognitive Function in People Receiving Haemodialysis), which is not on this map. Cited by 115 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
115citing papers in PubMed, 4 pooled it
–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

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.

NCT07377500 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Randomised Controlled Trial of Dialysate Cooling for the Preservation of Cognitive Function in People Receiving Haemodialysis

TypeinterventionalSponsorUniversity Hospitals of Derby and Burton NHS Foundation TrustRan2026 to 2028Enrolled356ConditionsHaemodialysis, Kidney FailureArmsDialysis cooling
3 · Its place in the literature

Who cites it

115 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Cognitive Impairment in End Stage Renal Disease Patients Undergoing Hemodialysis: Markers and Risk Factors.International journal of environmental research and public health · 2022
    Pooled it
  3. Pooled it
  4. Guideline
  5. Trial
  6. Randomized trial comparing standard versus thermocontrolled haemodialysis using intradialytic cardiac, brain and renal magnetic resonance imaging.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2024
    Trial
  7. Kidney Disease, Hypertension Treatment, and Cerebral Perfusion and Structure.American journal of kidney diseases : the official journal of the National Kidney Foundation · 2022
    Trial
  8. Observational
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Article
  20. Review

55 more citing papers are in PubMed but not listed here.

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

7 authors.

Mark Duncan FindlayInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK; mark.findlay@nhs.net.
Jesse DawsonInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
David Alexander DickieInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
Kirsten P ForbesDepartment of Neuroradiology, Queen Elizabeth University Hospital, Glasgow, UK.
Deborah McGlynnInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
Terry QuinnInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK.
Patrick B MarkInstitute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK; mark.findlay@nhs.net.

Funding

Chief Scientist Office TSA PPA 2015/01_CSOMedical Research Council MR/N003403/1
6 · The paper itself

Abstract

backgroundThe immediate and longer-term effects of hemodialysis on cerebral circulation, cerebral structure, and cognitive function are poorly understood.

methodsIn a prospective observational cohort study of 97 adults (median age 59 years) receiving chronic hemodialysis, we used transcranial Doppler ultrasound to measure cerebral arterial mean flow velocity (MFV) throughout dialysis. Using a well validated neuropsychological protocol, we assessed cognitive function during and off dialysis and after 12 months of treatment. We also used brain magnetic resonance imaging (MRI) to assess atrophy, white matter hyperintensities (WMHs), and diffusion parameters, and tested correlations between MFV, cognitive scores, and changes on MRI.

resultsMFV declined significantly during dialysis, correlating with ultrafiltrate volumes. Percentage of decline in MFV correlated with intradialytic decline in cognitive function, including global function, executive function, and verbal fluency. At follow-up, 73 patients were available for repeat testing, 34 of whom underwent repeat MRI. In a subgroup of patients followed for 12 months of continued dialysis, percentage of decline in MFV correlated significantly with lower global and executive function and with progression of WMH burden (a marker of small vessel disease). Twelve of 15 patients who received renal transplants during follow-up had both early and follow-up off-dialysis assessments. After transplant, patients' memory (on a delayed recall test) improved significantly; increased fractional anisotropy of white matter (a measure of cerebral diffusion) in these patients correlated with improving executive function.

conclusionsPatients undergoing hemodialysis experience transient decline in cerebral blood flow, correlating with intradialytic cognitive dysfunction. Progressive cerebrovascular disease occurred in those continuing dialysis, but not in transplanted patients. Cognitive function and cerebral diffusion improved after transplant.

Indexed as

AdultAgedAge FactorsCerebrovascular CirculationChi-Square DistributionCognitive DysfunctionCohort StudiesDisease ProgressionFemaleFollow-Up StudiesHumansIncidenceKidney Failure, ChronicKidney TransplantationMagnetic Resonance ImagingMalecardiovascular diseasecerebrovascular diseasecognitionhemodialysis

Identifiers

PMID30530658
PMCPMC6317612

What OpenQuestion holds

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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.