Evidence map›Paper›PMID 34937034›Full record

ArticleRespiration; international review of thoracic diseases2022

Implementation of Bronchoscopic Lung Volume Reduction Using One-Way Endobronchial Valves: A Retrospective Single-Centre Cohort Study.

Rein Posthuma, Anouk W Vaes, Kim H M Walraven, Peyman Sardari Nia, Jan U Schreiber, Hester A Gietema, Geertjan Wesseling, Emiel F M Wouters, Lowie E G W Vanfleteren

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In one paragraph

Article in Respiration; international review of thoracic diseases, 2022. 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 30% 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, 4 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 4 institutions in 3 countries.

Rein PosthumaDepartment of Research and Development, Ciro, Horn, The Netherlands.
Anouk W VaesDepartment of Research and Development, Ciro, Horn, The Netherlands.
Kim H M WalravenNUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands.
Peyman Sardari NiaDepartment of Cardiothoracic Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands.
Jan U SchreiberDepartment of Anaesthesiology, Maastricht University Medical Centre, Maastricht, The Netherlands.
Hester A GietemaDepartment of Radiology, Maastricht University Medical Centre+, Maastricht, The Netherlands.
Geertjan WesselingDepartment of Respiratory Medicine, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands.
Emiel F M WoutersDepartment of Research and Development, Ciro, Horn, The Netherlands.
Lowie E G W VanfleterenDepartment of Respiratory Medicine and Allergology, COPD Centre, Sahlgrenska University Hospital, Gothenburg, Sweden.
Maastricht University Medical Centre · NLCiro · NLLudwig Boltzmann Institute for Lung Vascular Research · ATSahlgrenska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBronchoscopic lung volume reduction (BLVR) using 1-way endobronchial valves (EBV) has become a guideline treatment in patients with advanced emphysema. Evidence from this minimally invasive treatment derives mainly from well-designed controlled trials conducted in high-volume specialized intervention centres. Little is known about real-life outcome data in hospitals setting up this novel treatment and which favourable conditions are required for a continuous successful program.

objectivesIn this study, we aim to evaluate the eligibility rate for BLVR and whether the implementation of BLVR in our academic hospital is feasible and yields clinically significant outcomes.

methodA retrospective evaluation of patients treated with EBV between January 2016 and August 2019 was conducted. COPD assessment test (CAT), forced expiratory volume in 1 s (FEV1), residual volume (RV), and 6-min walking test (6MWT) were measured at baseline and 3 months after intervention. Paired sample t tests were performed to compare means before and after intervention.

resultsOf 350 subjects screened, 283 (81%) were not suitable for intervention mostly due to lack of a target lobe. The remaining 67 subjects (19%) underwent bronchoscopic assessment, and if suitable, valves were placed in the same session. In total, 55 subjects (16%) were treated with EBV of which 10 did not have complete follow-up: 6 subjects had their valves removed because of severe pneumothorax (n = 2) or lack of benefit (n = 4) and the remaining 4 had missing follow-up data. Finally, 45 patients had complete follow-up at 3 months and showed an average change ± SD in CAT -4 ± 6 points, FEV1 +190 ± 140 mL, RV -770 ± 790 mL, and +37 ± 65 m on the 6MWT (all p < 0.001). After 1-year follow-up, 34 (76%) subjects had their EBV in situ.

conclusionImplementing BLVR with EBV is feasible and effective. Only 16% of screened patients were eligible, indicating that this intervention is only applicable in a small subset of highly selected subjects with advanced emphysema, and therefore a high volume of COPD patients is essential for a sustainable BLVR program.

Indexed as

EmphysemaPulmonary EmphysemaBronchoscopyCohort StudiesForced Expiratory VolumeHumansPneumonectomyRetrospective StudiesTreatment OutcomeBronchoscopic lung volume reductionEmphysemaInterventionInterventional bronchoscopy

Identifiers

PMID34937034
PMCPMC9153356
OpenAlexW4200326946

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.