Evidence map›Paper›PMID 32299587›Full record

ArticleJournal of the American College of Cardiology2020

Transvalvular Flow Rate Determines Prognostic Value of Aortic Valve Area in Aortic Stenosis.

Mayooran Namasivayam, Wei He, Timothy W Churchill, Romain Capoulade, Shiying Liu, Hang Lee, Jacqueline S Danik, Michael H Picard, Philippe Pibarot, Robert A Levine and 1 more

Open access · greenAbstract read
In one paragraph

Article in Journal of the American College of Cardiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
9.3field-weighted citation impact, top 1% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 97 citations in OpenAlex.

  1. Pooled it
  2. Invasive transvalvular flow rate to predict likely severe aortic valve stenosis with low-gradient and normal ejection fraction.Clinical research in cardiology : official journal of the German Cardiac Society · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Continuous-wave Doppler interrogation in valvular heart disease: pearls and pitfalls.European heart journal. Imaging methods and practice · 2026
    Review
  8. Article
  9. Observational
  10. Article
  11. Review
  12. Re-Exploration of Flow Rate in Low-Flow, Low-Gradient Aortic Stenosis.Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Discordance between aortic valve gradient and area: do I trust the significant gradient?European heart journal supplements : journal of the European Society of Cardiology · 2025
    Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 3 countries.

Mayooran NamasivayamMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts. Electronic address: https://twitter.com/MayoNamasivayam.
Wei HeMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Timothy W ChurchillMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Romain CapouladeMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Université de Nantes, CHU Nantes, CNRS, INSERM, l'institut du thorax, F-44000, Nantes, France; Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada.
Shiying LiuMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Hang LeeMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Jacqueline S DanikMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Michael H PicardMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Philippe PibarotQuebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada.
Robert A LevineMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
Judy HungMassachusetts General Hospital, Harvard Medical School, Boston, Massachusetts. Electronic address: jhung@mgh.harvard.edu.
Harvard University · USCentre National de la Recherche Scientifique · FRMassachusetts General Hospital · USTwitter (United States) · USUniversité Laval · CA

Funding

REVISED CAROL ACT IIU01HL088942 · NHLBI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI GELIJNS, ANNE CHRISTINE, MOSKOWITZ, ALAN J · 2007 to 2025
$122.6M
Improving Mitral Compensation In Ischemic RegurgitationR01HL141917 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI AIKAWA, ELENA, BISCHOFF, JOYCE E. · 2018 to 2021
$5.6M
Improving Mitral Compensation in Ischemic RegurgitationR01HL109506 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI AIKAWA, ELENA, BISCHOFF, JOYCE E. · 2012 to 2015
$3.3M
Treating Ventricle and Valve: New Synergies for Ischemic LV Remodeling with MRR01HL128099 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI AKAR, FADI GABRIEL, LEVINE, ROBERT A · 2016 to 2019
$2.8M
Polymer Therapy for Ischemic Mitral RegurgitationR01HL092101 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI HUNG, JUDY W · 2009 to 2013
$2.1M
CIHR FDN-143225CIHR MOP-114997NHLBI NIH HHS R01 HL092101NHLBI NIH HHS R01 HL109506NHLBI NIH HHS R01 HL128099NHLBI NIH HHS R01 HL141917NHLBI NIH HHS U01 HL088942
6 · The paper itself

Abstract

backgroundAortic valve area (AVA) ≤1.0 cm

objectivesThis study aimed to evaluate the effect of flow rate on prognostic value of AVA in AS.

methodsIn total, 1,131 patients with moderate or severe AS and complete clinical follow-up were included as part of a longitudinal database. The effect of flow rate (ratio of stroke volume to ejection time) on prognostic value of AVA ≤1.0 cm

resultsFlow rate had a significant effect on prognostic value of AVA. AVA ≤1.0 cm

conclusionsTransvalvular flow rate determines prognostic value of AVA in AS. AVA measured at low flow rate is not a good prognostic marker and therefore not a good diagnostic marker for truly severe AS. Flow rate assessment should be incorporated into clinical diagnosis, classification, and prognosis of AS.

Indexed as

AgedAlgorithmsAortic ValveAortic Valve StenosisEchocardiography, DopplerFemaleFollow-Up StudiesHeart Valve Prosthesis ImplantationHemodynamicsHumansMalePrognosisSex FactorsStroke Volumeaortic stenosisflow ratelow flowlow gradientoutcomeprognosis

Identifiers

PMID32299587
PMCPMC8087111
OpenAlexW3015249348

What OpenQuestion holds

Textmetadata
LicenceTDM
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.