Evidence map›Paper›PMID 32660204›Full record

ArticleUltrasonography (Seoul, Korea)2020

Lung ultrasonography in pregnant women during the COVID-19 pandemic: an interobserver agreement study among obstetricians.

Murat Yassa, Memis Ali Mutlu, Pinar Birol, Taha Yusuf Kuzan, Erkan Kalafat, Canberk Usta, Emre Yavuz, Ilkhan Keskin, Niyazi Tug

Open access · diamondAbstract read
In one paragraph

Article in Ultrasonography (Seoul, Korea), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Clinical and radiologic characteristics of symptomatic pregnant women with COVID-19 pneumoniaJournal of the Turkish German Gynecological Association · 2021
    Article
  7. Article
  8. Article
  9. Reply.Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2021
    Article
  10. Article
  11. Review
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 1 institution in 1 country.

Murat YassaDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Memis Ali MutluDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Pinar BirolDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Taha Yusuf KuzanDepartment of Radiology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Erkan KalafatDepartment of Statistics, Middle East Technical University, Faculty of Arts and Sciences, Ankara, Turkey.
Canberk UstaDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Emre YavuzDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Ilkhan KeskinDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Niyazi TugDepartment of Obstetrics and Gynecology, Sehit Prof. Dr. Ilhan Varank Sancaktepe Training and Research Hospital, Istanbul, Turkey.
Ankara University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study investigated interobserver agreement in lung ultrasonography (LUS) in pregnant women performed by obstetricians with different levels of expertise, with confirmation by an expert radiologist.

methodsThis prospective study was conducted at a tertiary "Coronavirus Pandemic Hospital" in April 2020. Pregnant women suspected to have coronavirus disease 2019 (COVID-19) were included. Two blinded experienced obstetricians performed LUS on pregnant women separately and noted their scores for 14 lung zones. Following a theoretical and hands-on practical course, one experienced obstetrician, two novice obstetric residents, and an experienced radiologist blindly evaluated anonymized and randomized still images and videoclips retrospectively. Weighted Cohen's kappa and Krippendorff's alpha tests were used to assess the interobserver agreement.

resultsFifty-two pregnant women were included, with confirmed COVID-19 diagnosis rate of 82.7%. In total, 336 eligible still images and 115 videoclips were included in the final analysis. The overall weighted Cohen's kappa values ranged from 0.706 to 0.912 for the 14 lung zones. There were only seven instances of major disagreement (>1 point) in the evaluation of 14 lung zones of 52 patients (n=728). The overall agreement between the radiologist and obstetricians for the still images (Krippendorff's α=0.856, 95% confidence interval [CI], 0.797 to 0.915) and videoclips (Krippendorff's α=0.785; 95% CI, 0.709 to 0.861) was good.

conclusionThe interobserver agreement between obstetricians with different levels of experience on still images and videoclips of LUS was good. Following a brief theoretical course, obstetricians' performance of LUS in pregnant women and interpretation of pre-acquired LUS images can be considered consistent.

Indexed as

COVID-19Interobserver variabilityLung ultrasoundPregnancySARS-CoV-2

Identifiers

PMID32660204
PMCPMC7515667
OpenAlexW3039883473

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LicenceCC BY-NC
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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.