Evidence map›Paper›PMID 26438414›Full record

ArticleEuropean radiology2016

Impact of endobronchial coiling on segmental bronchial lumen in treated and untreated lung lobes: Correlation with changes in lung volume, clinical and pulmonary function tests.

C Kloth, W M Thaiss, J Hetzel, H Ditt, U Grosse, K Nikolaou, M Horger

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In one paragraph

Article in European radiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 20% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 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

7 authors at 2 institutions in 2 countries.

C KlothDepartment of Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str.3, 72076, Tübingen, Germany. christopher.kloth@med.uni-tuebingen.de.
W M ThaissDepartment of Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str.3, 72076, Tübingen, Germany.
J HetzelDepartment of Internal Medicine II, Eberhard Karls University, Otfried-Müller-Str. 10, 72076, Tübingen, Germany.
H DittSiemens AG Healthcare, Imaging & Therapy Systems Computed Tomography & Radiation Oncology, HC IM CR R&D PA CA DC, Siemensstr. 1, 91301, Forchheim, Germany.
U GrosseDepartment of Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str.3, 72076, Tübingen, Germany.
K NikolaouDepartment of Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str.3, 72076, Tübingen, Germany.
M HorgerDepartment of Diagnostic and Interventional Radiology, Eberhard Karls University, Hoppe-Seyler-Str.3, 72076, Tübingen, Germany.
University of Tübingen · DESiemens Healthcare (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess the impact of endobronchial coiling on the segment bronchus cross-sectional area and volumes in patients with lung emphysema using quantitative chest-CT measurements. MATERIALS AND

methodsThirty patients (female = 15; median age = 65.36 years) received chest-CT before and after endobronchial coiling for lung volume reduction (LVR) between January 2010 and December 2014. Thin-slice (0.6 mm) non-enhanced image data sets were acquired both at end-inspiration and end-expiration using helical technique and 120 kV/100-150 mAs. Clinical response was defined as an increase in the walking distance (Six-minute walk test; 6MWT) after LVR-therapy. Additionally, pulmonary function test (PFT) measurements were used for clinical correlation.

resultsIn the treated segmental bronchia, the cross-sectional lumen area showed significant reduction (p < 0.05) in inspiration and tendency towards enlargement in expiration (p > 0.05). In the ipsilateral lobes, the lumina showed no significant changes. In the contralateral lung, we found tendency towards increased cross-sectional area in inspiration (p = 0.06). Volumes of the treated segments correlated with the treated segmental bronchial lumina in expiration (r = 0.80, p < 0.001). Clinical correlation with changes in 6MWT/PFT showed a significant decrease of the inspiratory volume of the treated lobe in responders only.

conclusionEndobronchial coiling causes significant decrease in the cross-sectional area of treated segment bronchi in inspiration and a slight increase in expiration accompanied by a volume reduction. KEY POINTS: • Endobronchial coiling has indirect impact on cross-sectional area of treated segment bronchi • Volume changes of treated lobes correlate with changes in bronchial cross-sectional area • Coil-induced effects reflect their stabilizing and stiffening impact on lung parenchyma • Endobronchial coiling reduces bronchial collapsing compensating the loss of elasticity.

Indexed as

AgedBronchiBronchoscopyExhalationFemaleForced Expiratory VolumeHumansImage Processing, Computer-AssistedImaging, Three-DimensionalLungMalePneumonectomyPulmonary Diffusing CapacityPulmonary EmphysemaRespiratory Function TestsRetrospective StudiesChronic obstructive pulmonary disease (COPD)Computed tomography densitometryEndobronchial coilingHigh-resolution CT (HRCT)Lung volume reduction (LVR)

Identifiers

PMID26438414
OpenAlexW1874497048

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.