Evidence map›Paper›PMID 33280038›Full record

ArticleInteractive cardiovascular and thoracic surgery2021

Lung volume reduction surgery as salvage procedure after previous use of endobronchial valves.

Claudio Caviezel, Laura-Chiara Guglielmetti, Mateja Ladan, Henrik Jessen Hansen, Michael Perch, Didier Schneiter, Walter Weder, Isabelle Opitz, Daniel Franzen

Open access · bronzeAbstract read
In one paragraph

Article in Interactive cardiovascular and thoracic surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 26% 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

4 citing papers in PubMed, 10 citations in OpenAlex.

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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

9 authors at 2 institutions in 2 countries.

Claudio CaviezelDepartment of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland.
Laura-Chiara GuglielmettiDepartment of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland.
Mateja LadanDepartment of Cardiothoracic Surgery, Rigshospitalet, Copenhagen, Denmark.
Henrik Jessen HansenDepartment of Cardiothoracic Surgery, Rigshospitalet, Copenhagen, Denmark.
Michael PerchDepartment of Cardiology, Section for Lung Transplantation, Rigshospitalet, Copenhagen, Denmark.
Didier SchneiterDepartment of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland.
Walter WederDepartment of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland.
Isabelle OpitzDepartment of Thoracic Surgery, University Hospital Zurich, Zurich, Switzerland.
Daniel FranzenDepartment of Pulmonary Medicine, University Hospital Zurich, Zurich, Switzerland.
University Hospital of Zurich · CHRigshospitalet · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesLung volume reduction (LVR) is an efficient and approved treatment for selected emphysema patients. There is some evidence that repeated LVR surgery (LVRS) might be beneficial, but there are no current data on LVRS after unsuccessful bronchoscopic LVR (BLVR) with endobronchial valves (EBVs). We hypothesize good outcome of LVRS after BLVR with valves.

methodsIn this study, we retrospectively investigated all patients who underwent LVRS between 2015 and 2019 at 2 centres after previous unsuccessful EBV treatment. They were further divided into subgroups with patients who never achieved the intended improvement after BLVR (primary failure) and patients whose benefit was fading over time due to the natural development of emphysema (secondary failure). Patients with severe air leak after BLVR and immediate concomitant LVRS and fistula closure thereafter were analysed separately.

resultsA total of 38 patients were included. Of these, 19 patients had primary failure, 15 secondary failure and 4 were treated as an emergency due to severe air leak. At 3 months after LVRS, forced expiratory volume in 1 s had improved significantly by 12.5% (P = 0.011) and there was no 90-day mortality. Considering subgroups, patients with primary failure after BLVR seem to profit more than those with secondary failure. Patients with severe air leak after BLVR did not profit from fistula closure with concomitant LVRS.

conclusionsLVRS after previous BLVR with EBVs can provide significant clinical improvement with low morbidity, although results might not be as good as after primary LVRS.

Indexed as

BronchoscopyForced Expiratory VolumeHumansMaleMiddle AgedPatient SelectionPneumonectomyPulmonary EmphysemaRetrospective StudiesTreatment OutcomeBLVREmphysemaEndobronchial valvesLung volume reduction surgeryLVRS

Identifiers

PMID33280038
PMCPMC8906788
OpenAlexW3111395193

What OpenQuestion holds

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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.