Evidence map›Paper›PMID 33282205›Full record

ArticlePulmonary circulation

Diagnostic utility of sub-maximum cardiopulmonary exercise testing in the ambulatory setting for heart failure with preserved ejection fraction.

Hannah T Oakland, Phillip Joseph, Ahmed Elassal, Marjorie Cullinan, Paul M Heerdt, Inderjit Singh

Open access · goldAbstract read
In one paragraph

Article in Pulmonary circulation. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.3field-weighted citation impact, top 16% 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

13 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Article
  3. 3D echo derived right ventricular principal surface strain in pulmonary arterial hypertension.American journal of physiology. Heart and circulatory physiology · 2026
    Article
  4. Article
  5. Article
  6. Observational
  7. Article
  8. Article
  9. Cognitive impairment in pulmonary arterial hypertension.Annals of clinical and translational neurology · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Article
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

6 authors at 1 institution in 1 country.

Hannah T OaklandDivision of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Yale New Haven Hospital and Yale School of Medicine, New Haven, CT, USA.ORCID https://orcid.org/0000-0003-4678-1554
Phillip JosephDivision of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Yale New Haven Hospital and Yale School of Medicine, New Haven, CT, USA.ORCID https://orcid.org/0000-0001-9299-8629
Ahmed ElassalDepartment of Anesthesiology, Yale New Haven Hospital and Yale School of Medicine, New Haven, CT, USA.
Marjorie CullinanDepartment of Respiratory Care, Yale New Haven Hospital, New Haven, CT, USA.
Paul M HeerdtDepartment of Anesthesiology, Yale New Haven Hospital and Yale School of Medicine, New Haven, CT, USA.ORCID https://orcid.org/0000-0002-9765-9885
Inderjit SinghDivision of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Yale New Haven Hospital and Yale School of Medicine, New Haven, CT, USA.
Yale New Haven Hospital · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Research Training in AnesthesiaT32GM086287 · NIGMS · YALE UNIVERSITY · PI ROBERT SCHONBERGER · 2009 to 2026
$3.7M
NCATS NIH HHS UL1 TR001863NIGMS NIH HHS T32 GM086287
6 · The paper itself

Abstract

Pulmonary hypertension is commonly associated with heart failure with preserved ejection fraction. In heart failure with preserved ejection fraction, the elevated left-sided filling pressures result in isolated post-capillary pulmonary hypertension or combined pre- and post-capillary pulmonary hypertension. Although right heart catheterization is the gold standard for diagnosis, it is an invasive test with associated risks. The ability of sub-maximum cardiopulmonary exercise test as an adjunct diagnostic tool in pulmonary hypertension-associated heart failure with preserved ejection fraction is not known. Forty-six patients with heart failure with preserved ejection fraction and pulmonary hypertension (27 patients with combined pre- and post-capillary pulmonary hypertension and 19 patients with isolated post-capillary pulmonary hypertension) underwent sub-maximum cardiopulmonary exercise test followed by right heart catheterization. The study also included 18 age- and gender-matched control subjects. Several sub-maximum gas exchange parameters were examined to determine the ability of sub-maximum cardiopulmonary exercise test to distinguish between isolated post-capillary pulmonary hypertension and combined pre- and post-capillary pulmonary hypertension. Conventional echocardiogram measures did not distinguish between isolated post-capillary pulmonary hypertension and combined pre- and post-capillary pulmonary hypertension. Compared to isolated post-capillary pulmonary hypertension, combined pre- and post-capillary pulmonary hypertension had greater ventilatory equivalent for carbon dioxide (VE/VCO

Indexed as

cardiopulmonary exercise testing (CPET)exercise capacityheart failure with preserved ejection fraction (HFpEF)pulmonary hypertension

Identifiers

PMID33282205
PMCPMC7691918
OpenAlexW3095056122

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.