Evidence map›Paper›PMID 26418553›Full record

ArticlePloS one2015

Altered Right Ventricular Kinetic Energy Work Density and Viscous Energy Dissipation in Patients with Pulmonary Arterial Hypertension: A Pilot Study Using 4D Flow MRI.

Q Joyce Han, Walter R T Witschey, Christopher M Fang-Yen, Jeffrey S Arkles, Alex J Barker, Paul R Forfia, Yuchi Han

Abstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 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.

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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Right heart flow hemodynamic assessment using 4D flow CMR: a systematic review.European heart journal. Imaging methods and practice · 2025
    Review
  4. Review
  5. Observational
  6. A Non-Invasive Approach to Pulmonary Hypertension.Journal of clinical medicine · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Right ventricular energetic biomarkers from 4D Flow CMR are associated with exertional capacity in pulmonary arterial hypertension.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2022
    Article
  12. Hemodynamic Parameters for Cardiovascular System in 4D Flow MRI: Mathematical Definition and Clinical Applications.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
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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

7 authors.

Q Joyce HanCardiovascular Division, University of Pennsylvania, Philadelphia, PA, United States of America.
Walter R T WitscheyDepartment of Radiology, University of Pennsylvania, Philadelphia, PA, United States of America.
Christopher M Fang-YenDepartment of Bioengineering, University of Pennsylvania, Philadelphia, PA, United States of America.
Jeffrey S ArklesCardiovascular Division, Temple University, Philadelphia, PA, United States of America.
Alex J BarkerDepartment of Radiology, Northwestern University, Chicago, IL, United States of America.
Paul R ForfiaCardiovascular Division, Temple University, Philadelphia, PA, United States of America.
Yuchi HanCardiovascular Division, University of Pennsylvania, Philadelphia, PA, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRight ventricular (RV) function has increasingly being recognized as an important predictor for morbidity and mortality in patients with pulmonary arterial hypertension (PAH). The increased RV after-load increase RV work in PAH. We used time-resolved 3D phase contrast MRI (4D flow MRI) to derive RV kinetic energy (KE) work density and energy loss in the pulmonary artery (PA) to better characterize RV work in PAH patients.

methods4D flow and standard cardiac cine images were obtained in ten functional class I/II patients with PAH and nine healthy subjects. For each individual, we calculated the RV KE work density and the amount of viscous dissipation in the PA.

resultsPAH patients had alterations in flow patterns in both the RV and the PA compared to healthy subjects. PAH subjects had significantly higher RV KE work density than healthy subjects (94.7±33.7 mJ/mL vs. 61.7±14.8 mJ/mL, p = 0.007) as well as a much greater percent PA energy loss (21.1±6.4% vs. 2.2±1.3%, p = 0.0001) throughout the cardiac cycle. RV KE work density and percent PA energy loss had mild and moderate correlations with RV ejection fraction.

conclusionThis study has quantified two kinetic energy metrics to assess RV function using 4D flow. RV KE work density and PA viscous energy loss not only distinguished healthy subjects from patients, but also provided distinction amongst PAH patients. These metrics hold promise as imaging markers for RV function.

Indexed as

AdultBlood Flow VelocityFemaleHeart VentriclesHumansHypertension, PulmonaryMagnetic Resonance ImagingMaleMiddle AgedPilot ProjectsPulmonary ArteryVentricular Dysfunction, RightVentricular Function, RightYoung Adult

Identifiers

PMID26418553
PMCPMC4587751

What OpenQuestion holds

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Registered trials

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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.