Evidence map›Paper›PMID 25887446›Full record

ArticleJournal of cardiac failure2015

Submaximal Exercise Pulmonary Gas Exchange in Left Heart Disease Patients With Different Forms of Pulmonary Hypertension.

Bryan J Taylor, Michael R Smetana, Robert P Frantz, Bruce D Johnson

Abstract read
In one paragraph

Article in Journal of cardiac failure, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 17% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

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  12. Effect of βThe Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2017
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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

4 authors at 1 institution in 1 country.

Bryan J TaylorDivision of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota. Electronic address: b.taylor@exeter.ac.uk.
Michael R SmetanaDivision of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota.
Robert P FrantzDivision of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota.
Bruce D JohnsonDivision of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota.
Mayo Clinic · US

Funding

Pulmonary Limitations in Chronic Heart FailureR01HL071478 · NHLBI · MAYO CLINIC ROCHESTER · PI JOHNSON, BRUCE D · 2002 to 2014
$3.7M
Functional Optimization of Cardiac Resynchronization Therapy in Heart FailureR21HL098663 · NHLBI · MAYO CLINIC ROCHESTER · PI JOHNSON, BRUCE D · 2010 to 2011
$425k
NHLBI NIH HHS HL71478NHLBI NIH HHS HL98663NHLBI NIH HHS R01 HL071478NHLBI NIH HHS R21 HL098663
6 · The paper itself

Abstract

backgroundWe determined whether pulmonary gas exchange indices during submaximal exercise are different in heart failure (HF) patients with combined post- and pre-capillary pulmonary hypertension (PPC-PH) versus HF patients with isolated post-capillary PH (IPC-PH) or no PH. METHODS AND

resultsPulmonary hemodynamics and pulmonary gas exchange were assessed during rest and submaximal exercise in 39 HF patients undergoing right heart catheterization. After hemodynamic evaluation, patients were classified as having no PH (n = 11), IPC-PH (n = 12), or PPC-PH (n = 16). At an equivalent oxygen consumption, end-tidal CO2 (PETCO2) and arterial oxygen saturation (SaO2) were greater in no-PH and IPC-PH versus PPC-PH patients (36.1 ± 3.2 vs. 31.7 ± 4.5 vs. 26.2 ± 4.7 mm Hg and 97 ± 2 vs. 96 ± 3 vs. 91 ± 1%, respectively). Conversely, dead-space ventilation (VD/VT) and the ventilatory equivalent for carbon dioxide (V˙(E)/V˙CO2 ratio) were lower in no-PH and IPC-PH versus PPC-PH patients (0.37 ± 0.05 vs. 0.38 ± 0.04 vs. 0.47 ± 0.03 and 38 ± 5 vs. 42 ± 8 vs. 51 ± 8, respectively). The exercise-induced change in V(D)/V(T), V˙(E)/V˙CO2 ratio, and PETCO2 correlated significantly with the change in mean pulmonary arterial pressure, diastolic pressure difference, and transpulmonary pressure gradient in PPC-PH patients only.

conclusionsNoninvasive pulmonary gas exchange indices during submaximal exercise are different in HF patients with combined post- and pre-capillary PH compared with patients with isolated post-capillary PH or no PH.

Indexed as

AdultAgedExerciseFemaleHeart FailureHemodynamicsHumansHypertension, PulmonaryMaleMiddle AgedOxygen ConsumptionPulmonary Gas ExchangeDiastolic pressure differencepre- and post-capillary pulmonary hypertensionright-heart catheterizationsubmaximal exercise

Identifiers

PMID25887446
PMCPMC4522389
OpenAlexW2097841320

What OpenQuestion holds

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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.