Evidence map›Paper›PMID 33655769›Full record

ArticleAmerican journal of physiology. Lung cellular and molecular physiology2021

Right ventricular pressure-volume loop shape and systolic pressure change in pulmonary hypertension.

Manuel J Richter, Steven Hsu, Athiththan Yogeswaran, Faeq Husain-Syed, István Vadász, Hossein A Ghofrani, Robert Naeije, Sebastian Harth, Friedrich Grimminger, Werner Seeger and 3 more

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Lung cellular and molecular physiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 41 citations in OpenAlex.

  1. Chemotherapy-Induced Right Ventricular Dysfunction.Medicina (Kaunas, Lithuania) · 2026
    Review
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  16. Observational
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  18. Pulmonary Hypertension: A Contemporary Review.American journal of respiratory and critical care medicine · 2023
    Review
  19. Article
  20. Review
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

13 authors at 4 institutions in 4 countries.

Manuel J RichterDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Steven HsuDivision of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Athiththan YogeswaranDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.ORCID 0000-0001-9505-8608
Faeq Husain-SyedDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
István VadászDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.ORCID 0000-0003-1370-9783
Hossein A GhofraniDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Robert NaeijeErasme University Hospital, Brussels, Belgium.
Sebastian HarthDepartment of Radiology, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Friedrich GrimmingerDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Werner SeegerInstitute for Lung Health, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Henning GallDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Ryan J TedfordDivision of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.
Khodr TelloDepartment of Internal Medicine, Justus-Liebig-University Giessen, Universities of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Giessen, Germany.
Justus-Liebig-Universität Gießen · DEErasmus Hospital · BEJohns Hopkins University · USMedical University of South Carolina · US

Funding

Mechanisms of Right Ventricular Dysfunction in Scleroderma-associated PAHR01HL114910 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI HASSOUN, PAUL M. · 2012 to 2023
$6.2M
Mechanisms and treatment of right ventricular sarcomere dysfunction in scleroderma-associated pulmonary arterial hypertensionK23HL146889 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI HSU, STEVEN · 2019 to 2023
$886k
HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI) K23-HL146889HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI) R01-HL114910NHLBI NIH HHS K23 HL146889NHLBI NIH HHS R01 HL114910
6 · The paper itself

Abstract

Right ventricular (RV) function determines outcome in pulmonary arterial hypertension (PAH). RV pressure-volume loops, the gold standard for measuring RV function, are difficult to analyze. Our aim was to investigate whether simple assessments of RV pressure-volume loop morphology and RV systolic pressure differential reflect PAH severity and RV function. We analyzed multibeat RV pressure-volume loops (obtained by conductance catheterization with preload reduction) in 77 patients with PAH and 15 patients without pulmonary hypertension in two centers. Patients were categorized according to their pressure-volume loop shape (triangular, quadratic, trapezoid, or notched). RV systolic pressure differential was defined as end-systolic minus beginning-systolic pressure (ESP - BSP), augmentation index as ESP - BSP/pulse pressure, pulmonary arterial capacitance (PAC) as stroke volume/pulse pressure, and RV-arterial coupling as end-systolic/arterial elastance (Ees/Ea). Trapezoid and notched pressure-volume loops were associated with the highest afterload (Ea), augmentation index, pulmonary vascular resistance (PVR), mean pulmonary arterial pressure, stroke work, B-type natriuretic peptide, and the lowest Ees/Ea and PAC. Multivariate linear regression identified Ea, PVR, and stroke work as the main determinants of ESP - BSP. ESP - BSP also significantly correlated with multibeat Ees/Ea (Spearman's ρ: -0.518,

Indexed as

Stroke VolumeSystoleVascular ResistanceVentricular PressureBlood PressureFemaleHumansHypertension, PulmonaryMaleMiddle AgedRetrospective StudiesVentricular Dysfunction, Rightpressure-volume relationshippulmonary arterial hypertensionright ventricleright ventricle-pulmonary arterialsystolic function coupling

Identifiers

PMID33655769
PMCPMC8174826
OpenAlexW3133652497

What OpenQuestion holds

Textmetadata
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.