Evidence map›Paper›PMID 33755355›Full record

ArticleESC heart failure2021

The effect of high-flow arteriovenous fistulas on systemic haemodynamics and brain oxygenation.

Jan Malik, Anna Valerianova, Vladimir Tuka, Pavel Trachta, Vladimira Bednarova, Zdenka Hruskova, Marcela Slavikova, Mitchell H Rosner, Vladimir Tesar

Open access · goldAbstract read
In one paragraph

Article in ESC heart failure, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

23 citing papers in PubMed, 30 citations in OpenAlex.

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  15. Management of Arteriovenous Fistula After Successful Kidney Transplantation in Long-Term Follow-Up.Transplant international : official journal of the European Society for Organ Transplantation · 2024
    Observational
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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

9 authors at 2 institutions in 2 countries.

Jan MalikThird Department of Internal Medicine, General University Hospital, First Faculty of Medicine, Charles University, U Nemocnice 1, Prague, 128 08, Czech Republic.ORCID 0000-0002-2386-3293
Anna ValerianovaThird Department of Internal Medicine, General University Hospital, First Faculty of Medicine, Charles University, U Nemocnice 1, Prague, 128 08, Czech Republic.ORCID 0000-0002-8864-0816
Vladimir TukaThird Department of Internal Medicine, General University Hospital, First Faculty of Medicine, Charles University, U Nemocnice 1, Prague, 128 08, Czech Republic.
Pavel TrachtaThird Department of Internal Medicine, General University Hospital, First Faculty of Medicine, Charles University, U Nemocnice 1, Prague, 128 08, Czech Republic.ORCID 0000-0002-2218-3157
Vladimira BednarovaDepartment of Nephrology, General University Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic.ORCID 0000-0002-7935-5562
Zdenka HruskovaDepartment of Nephrology, General University Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic.ORCID 0000-0002-2658-365X
Marcela SlavikovaSecond Department of Surgery, General University Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic.ORCID 0000-0001-9485-5154
Mitchell H RosnerDepartment of Medicine, University of Virginia Health System, Charlottesville, VA, USA.
Vladimir TesarDepartment of Nephrology, General University Hospital, First Faculty of Medicine, Charles University, Prague, Czech Republic.ORCID 0000-0001-6982-0689
Charles University · CZUniversity of Virginia Health System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsHigh-flow arteriovenous fistula (AVF) for haemodialysis leads to profound haemodynamic changes and sometimes to heart failure (HF). Cardiac output (CO) is divided between the AVF and body tissues. The term effective CO (COef) represents the difference between CO and AVF flow volume (Qa) and better characterizes the altered haemodynamics that may result in organ hypoxia. We investigated the effects of Qa reduction on systemic haemodynamics and on brain oxygenation. METHODS AND

resultsThis is a single-centre interventional study. Twenty-six patients on chronic haemodialysis with high Qa (>1500 mL/min) were indicated for surgical Qa reduction for HF symptoms and/or signs of structural heart disease on echocardiography. The included patients underwent three sets of examinations: at 4 months and then 2 days prior and 6 weeks post-surgical procedure. Clinical status, echocardiographical haemodynamic assessment, Qa, and brain oximetry were recorded. All parameters remained stable from selection to inclusion. After the procedure, Qa decreased from 3.0 ± 1.4 to 1.3 ± 0.5 L/min, P < 0.00001, CO from 7.8 ± 1.9 to 6.6 ± 1.5 L/min, P = 0.0002, but COef increased from 4.6 ± 1.4 to 5.3 ± 1.4 L/min, P = 0.036. Brain tissue oxygen saturation increased from 56 ± 11% to 60 ± 9%, P = 0.001.

conclusionsQa reduction led to increased COef. This was explained by a decreased proportion of CO running through the AVF in patients with Qa > 2.0 L/min. These observations were mirrored by higher brain oxygenation and might explain HF symptoms and improved haemodynamics even in asymptomatic high Qa patients.

Indexed as

Arteriovenous FistulaArteriovenous Shunt, SurgicalBrainHemodynamicsHumansRenal DialysisArteriovenous fistulaBrain oximetryEffective cardiac outputHigh-output heart failure

Identifiers

PMID33755355
PMCPMC8120398
OpenAlexW3137700537

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.