Evidence map›Paper›PMID 30837249›Full record

ArticleBMJ open2019

Association between plasma B-type natriuretic peptide and anaemia in heart failure with or without ischaemic heart disease: a retrospective study.

Mitsutoshi Tominaga, Makoto Kawai, Kosuke Minai, Kazuo Ogawa, Yasunori Inoue, Satoshi Morimoto, Toshikazu Tanaka, Tomohisa Nagoshi, Takayuki Ogawa, Michihiro Yoshimura

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.8field-weighted citation impact, top 26% 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

8 citing papers in PubMed, 10 citations in OpenAlex.

  1. Cardiac Biomarkers in Chronic Kidney Disease: Signal or Noise?Clinical journal of the American Society of Nephrology : CJASN · 2026
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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

10 authors at 1 institution in 1 country.

Mitsutoshi TominagaDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Makoto KawaiDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.ORCID 0000-0002-0914-9376
Kosuke MinaiDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Kazuo OgawaDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Yasunori InoueDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Satoshi MorimotoDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Toshikazu TanakaDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Tomohisa NagoshiDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Takayuki OgawaDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Michihiro YoshimuraDivision of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Jikei University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesAnaemia is a risk of worsening heart failure. However, anaemia sometimes remains undetected because the superficial cardiac function does not precisely reflect the adverse impact of anaemia. Plasma B-type natriuretic peptide (BNP) could be helpful in these cases. However, the direct anaemic effects on BNP remain unknown. Herein, we compared the direct effect of anaemia on BNP and left ventricular ejection fraction (LVEF) using an advanced statistical procedure.

designA retrospective study.

settingSecondary care (cardiology), single-centre study.

participantsThe study consisted of 3756 inpatients, including 684 without ischaemic heart disease (IHD) and 3072 with IHD. PRIMARY AND SECONDARY OUTCOME MEASURES: Relationship between plasma BNP levels and LVEF values.

resultsA path model was constructed to simultaneously examine the adverse impact of anaemia on LVEF and plasma BNP, allowing for renal function. The path model revealed that LVEF increased in response to low haemoglobin (Hb), and the phenomenon was prominent in non-IHD (standardised regression coefficients (St.β): -0.264, p<0.001) rather than in IHD (St.β: 0.015, p=0.531). However, the response of BNP was commonly observed in both groups (non-IHD St.β: -0.238, IHD St.β: -0.398, p<0.001, respectively). Additionally, this study showed a direct link between low estimated glomerular filtration rate and high BNP independently of LVEF. Incrementally, Bayesian structural equation modelling in covariance structure analysis clearly supported this result. The scatter plots and simple regression analysis revealed that an adequate blood supply was approximately Hb 110 g/L and over in the non-IHD patients, whereas blood was not supplied in sufficient quantities even by Hb 130 g/L in patients with IHD.

conclusionThe current study demonstrated that anaemia was a substantial risk for worsening cardiac overload as estimated by plasma BNP. The anaemic response of LVEF likely changed depending on underlying cardiac disorders (IHD or not). However, the response of BNP was robustly observed.

Indexed as

AgedAnemiaBiomarkersCardiac CatheterizationCross-Sectional StudiesFemaleHeart FailureHumansMaleMiddle AgedMyocardial IschemiaNatriuretic Peptide, BrainRadionuclide VentriculographyRetrospective StudiesStroke VolumeBiomarkersNatriuretic Peptide, BrainAnaemiaB-type Natriuretic Peptidecardiac overloadchronic kidney diseaseheart failuresystolic function

Identifiers

PMID30837249
PMCPMC6429955
OpenAlexW2919826508

What OpenQuestion holds

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LicenceCC BY-NC
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.