Evidence map›Paper›PMID 34349598›Full record

ArticleSisli Etfal Hastanesi tip bulteni2021

Retinal Vascular Changes in Patients with Chronic Obstructive Pulmonary Disease: An Optical Coherence Tomography Angiography Study.

Abdurrahman Alpaslan Alkan, Eyup Duzgun, Murat Karapapak, Mufide Arzu Ozkarafakili, Ece Ozdemir Zeydanli, Gurcan Dogukan Arslan, Mehmet Egemen Karatas, Dilek Guven

Open access · hybridAbstract read
In one paragraph

Article in Sisli Etfal Hastanesi tip bulteni, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.8field-weighted citation impact, top 27% 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

6 citing papers in PubMed, 11 citations in OpenAlex.

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  6. Asymmetric Dimethylarginine in COPD Exacerbation.Sisli Etfal Hastanesi tip bulteni · 2022
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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

8 authors at 1 institution in 1 country.

Abdurrahman Alpaslan AlkanDepartment of Ophthalmology, Ercis Sehit Ridvan Cevik State Hospital, Van, Turkey.
Eyup DuzgunDepartment of Ophthalmology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Murat KarapapakDepartment of Ophthalmology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Mufide Arzu OzkarafakiliDepartment of Thoracic Diseases, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Ece Ozdemir ZeydanliDepartment of Ophthalmology, Ardahan State Hospital, Ardahan, Turkey.
Gurcan Dogukan ArslanDepartment of Ophthalmology, Tatvan State Hospital, Bitlis, Turkey.
Mehmet Egemen KaratasDepartment of Ophthalmology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Dilek GuvenDepartment of Ophthalmology, University of Health Sciences Turkey, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
Sivas State Hospital · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIn the current study, we aimed to investigate retinal vascular density and blood flow changes in patients with chronic obstructive pulmonary disease (COPD) using optical coherence tomography angiography (OCTA) (AngioVue Avanti, Optovue).

methodsThirty eyes of 30 patients with COPD and 30 eyes of 30 healthy controls were evaluated with OCTA. Foveal and parafoveal vessel density, inner retinal and choriocapillary flow area, and foveal avascular zone (FAZ) area were measured and compared between the groups.

resultsNo statistically significant differences were observed in the outer retinal flow area and choriocapillary flow area measurements between the groups (p=0.609 and p=0.162, respectively). There was no statistically significant difference in FAZ and FAZ perimeter values between the groups (p=0.725 and p=0.820, respectively). Vascular density measurements in the superficial foveal and parafoveal areas were not statistically significantly different between the groups (p>0.05, for all). Deep parafoveal vascular density values of the COPD group were statistically significantly lower than the control group in all investigated areas except the superior and inferior quadrants.

conclusionThe results of our study demonstrated for the first time that vascular density decreased in the parafoveal area due to COPD-related hypoxemia and endothelial dysfunction.

Indexed as

Chronic obstructive pulmonary diseasedeep capillary plexusfoveal avascular zoneoptical coherence tomography angiographysuperficial capillary plexus

Identifiers

PMID34349598
PMCPMC8298078
OpenAlexW3084262411

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.