Evidence map›Paper›PMID 30464445›Full record

Observational studyInternational journal of chronic obstructive pulmonary disease

Improvement in hypercapnia does not predict survival in COPD patients on chronic noninvasive ventilation.

Tim Raveling, Gerrie Bladder, Judith M Vonk, Jellie A Nieuwenhuis, Fransien M Verdonk-Struik, Peter J Wijkstra, Marieke L Duiverman

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

14 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
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  6. Does PaCOHeliyon · 2024
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  9. Observational
  10. Extracorporeal COThorax · 2020
    Article
  11. Observational
  12. Article
  13. Article
  14. 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

7 authors at 2 institutions in 1 country.

Tim RavelingFaculty of Medical Sciences, University of Groningen, Groningen, the Netherlands.
Gerrie BladderDepartment of Pulmonary Diseases and Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands, m.l.duiverman@umcg.nl.
Judith M VonkGroningen Research Institute of Asthma and COPD (GRIAC), University of Groningen, Groningen, the Netherlands, m.l.duiverman@umcg.nl.
Jellie A NieuwenhuisDepartment of Pulmonary Diseases and Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands, m.l.duiverman@umcg.nl.
Fransien M Verdonk-StruikPrimary Care Group Gelders Rivierenland, Ochten, the Netherlands.
Peter J WijkstraDepartment of Pulmonary Diseases and Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands, m.l.duiverman@umcg.nl.
Marieke L DuivermanDepartment of Pulmonary Diseases and Home Mechanical Ventilation, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands, m.l.duiverman@umcg.nl.
University Medical Center Groningen · NLUniversity of Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIt has recently been shown that chronic noninvasive ventilation (NIV) improves a number of outcomes including survival, in patients with stable hypercapnic COPD. However, the mechanisms responsible for these improved outcomes are still unknown. The aim of the present study was to identify parameters associated with: 1) an improved arterial partial pressure of carbon dioxide (PaCO PATIENTS AND

methodsData from 240 COPD patients treated with chronic NIV were analyzed. Predictors for the change in PaCO

resultsA higher level of bicarbonate before NIV initiation, the use of higher inspiratory ventilator pressures, the presence of anxiety symptoms, and NIV initiated following an exacerbation compared to NIV initiated in stable disease were associated with a larger reduction in PaCO

conclusionPatients with anxiety symptoms and a high bicarbonate level at NIV initiation are potentially good responders in terms of an improvement in hypercapnia. Also, higher inspiratory ventilator pressures are associated with a larger reduction in PaCO

Indexed as

AgedAnxietyBicarbonatesBiomarkersFemaleHumansHypercapniaLungMaleMiddle AgedNoninvasive VentilationProspective StudiesPulmonary Disease, Chronic ObstructiveRecovery of FunctionRespiratory InsufficiencyTime FactorsBicarbonatesBiomarkersbicarbonatecarbon dioxidechronic obstructive pulmonary diseaseexacerbationhome mechanical ventilationrespiratory insufficiency

Identifiers

PMID30464445
PMCPMC6219270
OpenAlexW2899056912

What OpenQuestion holds

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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.