Evidence map›Paper›PMID 35332069›Full record

SynthesisThe European respiratory journal2022

Diagnostic, prognostic and differential-diagnostic relevance of pulmonary haemodynamic parameters during exercise: a systematic review.

Katarina Zeder, Chiara Banfi, Gregor Steinrisser-Allex, Bradley A Maron, Marc Humbert, Gregory D Lewis, Andrea Berghold, Horst Olschewski, Gabor Kovacs

Open access · greenAbstract readSystematic Review
In one paragraph

Synthesis in The European respiratory journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 2 pooled it
12.3field-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

46 citing papers in PubMed, 2 syntheses or guidelines pooled it, 90 citations in OpenAlex.

  1. Normal limits for the right ventricle-pulmonary circulation exercise echocardiography: a meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2026
    Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Exercise-Induced Pulmonary Hypertension: What Is New?Journal of cardiovascular development and disease · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Advances in the imaging of pulmonary hypertension.International journal of cardiology. Congenital heart disease · 2025
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Observational
  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

9 authors at 4 institutions in 3 countries.

Katarina ZederDivision of Pulmonology, Dept of Internal Medicine, Medical University of Graz, Graz, Austria.
Chiara BanfiInstitute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria.
Gregor Steinrisser-AllexLibrary of the Medical University of Graz, Graz, Austria.
Bradley A MaronBrigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Marc HumbertUniversity Paris-Sud, Faculté de Médecine, Université Paris Saclay, Le Kremlin-Bicêtre, France.ORCID 0000-0003-0703-2892
Gregory D LewisDivision of Cardiology and Division of Pulmonary and Critical Care Medicine, Dept of Medicine, Massachusetts General Hospital, Boston, MA, USA.ORCID 0000-0001-8108-8240
Andrea BergholdInstitute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Graz, Austria.
Horst OlschewskiDivision of Pulmonology, Dept of Internal Medicine, Medical University of Graz, Graz, Austria horst.olschewski@medunigraz.at.
Gabor KovacsDivision of Pulmonology, Dept of Internal Medicine, Medical University of Graz, Graz, Austria.
Medical University of Graz · ATBrigham and Women's Hospital · USMassachusetts General Hospital · USUniversité Paris-Saclay · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe cardiopulmonary haemodynamic profile observed during exercise may identify patients with early-stage pulmonary vascular and primary cardiac diseases, and is used clinically to inform prognosis. However, a standardised approach to interpreting haemodynamic parameters is lacking.

methodsWe performed a systematic literature search according to PRISMA guidelines to identify parameters that may be diagnostic for an abnormal haemodynamic response to exercise and offer optimal prognostic and differential-diagnostic value. We performed random-effects meta-analyses of the normal values and report effect sizes as weighted mean±sd. Results of diagnostic and prognostic studies are reported descriptively.

resultsWe identified 45 eligible studies with a total of 5598 subjects. The mean pulmonary arterial pressure (mPAP)/cardiac output (CO) slope, pulmonary arterial wedge pressure (PAWP)/CO slope and peak cardiac index (or CO) provided the most consistent prognostic haemodynamic parameters during exercise. The best cut-offs for survival and cardiovascular events were a mPAP/CO slope >3 Wood units (WU) and PAWP/CO slope >2 WU. A PAWP/CO slope cut-off >2 WU best differentiated pre- from post-capillary causes of PAP elevation during exercise. Upper limits of normal (defined as mean+2sd) for the mPAP/CO and PAWP/CO slopes were strongly age-dependent and ranged in 30-70-year-old healthy subjects from 1.6 to 3.3 WU and 0.6 to 1.8 WU, respectively.

conclusionAn increased mPAP/CO slope during exercise is associated with impaired survival and an independent, prognostically relevant cut-off >3 WU has been validated. A PAWP/CO slope >2 WU may be suitable for the differentiation between pre- and post-capillary causes of PAP increase during exercise.

Indexed as

HemodynamicsLungAdultAgedHumansMiddle AgedPrognosisPulmonary Wedge PressureVascular Resistance

Identifiers

PMID35332069
PMCPMC9556812
OpenAlexW4220754497

What OpenQuestion holds

Textmetadata
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.