Evidence map›Paper›PMID 40134848›Full record

ArticleEuropean heart journal open2025

Pulmonary haemodynamics by echocardiography over 3 days of acclimatization in lowlanders with chronic obstructive pulmonary disease travelling to 3100 m of high altitude.

Konstantinos Bitos, Julian Müller, Adilet Omuralieva, Simon R Schneider, Mona Lichtblau, Stéphanie Saxer, Felix C Tanner, Michael Furian, Maamed Mademilov, Talant Sooronbaev and 2 more

Abstract read
In one paragraph

Article in European heart journal open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

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

  1. Change in pulmonary artery pressure upon acute exposure to high altitude: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2026
    Pooled it
  2. 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

12 authors.

Konstantinos BitosDepartment of Cardiology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0009-0002-2609-6330
Julian MüllerDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0000-0003-4059-5937
Adilet OmuralievaDepartment of Cardiology, National Center of Cardiology and Internal Medicine Named after Academician M. Mirrakhimov, Bishkek, Kyrgyzstan.
Simon R SchneiderDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.
Mona LichtblauDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0000-0003-4485-1758
Stéphanie SaxerDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0000-0002-3278-6277
Felix C TannerDepartment of Cardiology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0000-0002-4315-2667
Michael FurianDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.
Maamed MademilovDepartment of Cardiology, National Center of Cardiology and Internal Medicine Named after Academician M. Mirrakhimov, Bishkek, Kyrgyzstan.ORCID https://orcid.org/0000-0001-8528-3115
Talant SooronbaevDepartment of Cardiology, National Center of Cardiology and Internal Medicine Named after Academician M. Mirrakhimov, Bishkek, Kyrgyzstan.
Konrad E BlochDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.
Silvia UlrichDepartment of Pulmonology, University Hospital of Zurich, Raemistrasse 100, Zurich 8091, Switzerland.ORCID https://orcid.org/0000-0002-5250-5022

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aims: Patients with chronic obstructive pulmonary disease experience an increase in systolic pulmonary artery pressure (sPAP) when exposed to high altitude with an unclear acclimatization. We investigated the effects of acute ascent to 3100 m on pulmonary haemodynamics of patients with chronic obstructive pulmonary disease and their acclimatization during a 3-day stay at high altitude. Methods and results: In this prospective, interventional study, stable, normocapnic patients with chronic obstructive pulmonary disease, with FEV Conclusion: In stable patients with chronic obstructive pulmonary disease travelling to and staying at 3100 m for 3 days/nights without adverse events, sPAP initially increased, along with an increased pulmonary resistance and a reduced right ventricular-arterial coupling reflected by a lower TAPSE/sPAP. Whereas sPAP steadily decreased during acclimatization, other echocardiographic parameters remained unchanged.

Indexed as

AcclimatizationHigh altitudePulmonary haemodynamics

Identifiers

PMID40134848
PMCPMC11935530

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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.