Evidence map›Paper›PMID 33522131›Full record

ArticleESC heart failure2021

Iron deficiency impacts prognosis but less exercise capacity in heart failure with preserved ejection fraction.

Arantxa Barandiarán Aizpurua, Sandra Sanders-van Wijk, Hans-Peter Brunner-La Rocca, Michiel T H M Henkens, Jerremy Weerts, Mireille H A Spanjers, Christian Knackstedt, Vanessa P M van Empel

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 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

27 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
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  10. Heart failure with preserved ejection fraction: diagnosis, risk assessment, and treatment.Clinical research in cardiology : official journal of the German Cardiac Society · 2024
    Review
  11. Article
  12. Review
  13. Article
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  16. Advances in extracardiac mechanisms for heart failure with preserved ejection fraction.Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2022
    Article
  17. Review
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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

8 authors at 1 institution in 1 country.

Arantxa Barandiarán AizpuruaDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.ORCID 0000-0002-3448-5531
Sandra Sanders-van WijkDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Hans-Peter Brunner-La RoccaDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Michiel T H M HenkensDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Jerremy WeertsDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Mireille H A SpanjersDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Christian KnackstedtDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Vanessa P M van EmpelDepartment of Cardiology, Maastricht University Medical Centre (MUMC+), PO 5800, Maastricht, 6202AZ, The Netherlands.
Maastricht University Medical Centre · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsWhether and how iron deficiency (ID) impacts patients with heart failure (HF) with preserved ejection fraction (HFpEF) remain unclear. The aim of our study was to investigate the impact of ID on functional status, exercise capacity, and prognosis in HFpEF. METHODS AND

resultsThe study population consisted of 300 HFpEF patients. ID was defined as serum ferritin <100 μg/L or 100-300 μg/L and transferrin-saturation <20%. Baseline functional status, quality of life (HADS score and EQ 5D index), 6 min walking test, echocardiography, and outcome (all-cause mortality and combined all cause-mortality and HF hospitalization) were evaluated. ID was found in 159 (53%) patients. Patients with ID had a worse prognosis with a higher combined endpoint of all-cause mortality and HF hospitalization after 4 years of follow-up (log rank = 0.008). Pulmonary hypertension, depression, and thyroid disease were more prevalent in the ID group. Multivariable analysis showed that ID was independently associated with body mass index (P = 0.003), pulmonary hypertension (P = 0.008), and thyroid disease (P = 0.01). Although patients with ID had a lower exercise capacity compared with patients without ID (393 m [294-455] vs. 344 m [260-441], P = 0.008), there was no significant correlation after multivariable correction for age, BMI, NT-proBNP, DM, and depression.

conclusionsHeart failure with preserved ejection fraction patients with ID have a worse prognosis and impaired exercise capacity compared with those without ID. However, although a trend was observed, after multivariable correction ID was no longer significantly associated with a reduced exercise capacity. This reflects that impaired exercise capacity in HFpEF is complex and seems multifactorial. Interestingly, pulmonary hypertension was an independent predictor of both ID and exercise capacity.

Indexed as

Anemia, Iron-DeficiencyHeart FailureExercise ToleranceHumansPrognosisQuality of LifeStroke VolumeExercise capacityHeart failure with preserved ejection fractionIron deficiency

Identifiers

PMID33522131
PMCPMC8006701
OpenAlexW3128017191

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

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.