Evidence map›Paper›PMID 33426734›Full record

ArticleJournal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine2021

Interobserver Agreement of Lung Ultrasound Findings of COVID-19.

Andre Kumar, Yingjie Weng, Sally Graglia, Sukyung Chung, Youyou Duanmu, Farhan Lalani, Kavita Gandhi, Viveta Lobo, Trevor Jensen, Jeffrey Nahn and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
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  8. Review
  9. Article
  10. Ultrasonographic assessment of pulmonary and Central venous congestion in experimental heart failure.American journal of physiology. Heart and circulatory physiology · 2024
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  11. Article
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  15. Simplified Lung Ultrasound Examination and Telehealth Feasibility in Early SARS-CoV-2 Infection.Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography · 2022
    Article
  16. Point-of-Care Ultrasound Predicts Clinical Outcomes in Patients With COVID-19.Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2022
    Article
  17. Observational
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  19. Observational
  20. CPIS Lung Ultrasound and the Erratic March toward Diagnostic Certainty in VAP.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2021
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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

11 authors at 3 institutions in 1 country.

Andre KumarDepartment of Medicine, Stanford University School of Medicine, Stanford, California, USA.ORCID https://orcid.org/0000-0002-4631-3307
Yingjie WengQuantitative Sciences Unit, Stanford University, Stanford, California, USA.
Sally GragliaDepartment of Emergency Medicine, University of California San Francisco, San Francisco, California, USA.
Sukyung ChungQuantitative Sciences Unit, Stanford University, Stanford, California, USA.
Youyou DuanmuDepartment of Emergency Medicine, Stanford University School of Medicine, Stanford, California, USA.
Farhan LalaniDepartment of Medicine, University of California San Francisco, San Francisco, California, USA.
Kavita GandhiDepartment of Emergency Medicine, University of California San Francisco, San Francisco, California, USA.ORCID https://orcid.org/0000-0001-7349-3473
Viveta LoboDepartment of Emergency Medicine, Stanford University School of Medicine, Stanford, California, USA.
Trevor JensenDepartment of Medicine, University of California San Francisco, San Francisco, California, USA.
Jeffrey NahnDepartment of Emergency Medicine, University of California San Francisco, San Francisco, California, USA.
John KuglerDepartment of Medicine, Stanford University School of Medicine, Stanford, California, USA.
University of California, San Francisco · USStanford University · USQuantitative BioSciences · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLung ultrasound (LUS) has received considerable interest in the clinical evaluation of patients with COVID-19. Previously described LUS manifestations for COVID-19 include B-lines, consolidations, and pleural thickening. The interrater reliability (IRR) of these findings for COVID-19 is unknown.

methodsThis study was conducted between March and June 2020. Nine physicians (hospitalists: n = 4; emergency medicine: n = 5) from 3 medical centers independently evaluated n = 20 LUS scans (n = 180 independent observations) collected from patients with COVID-19, diagnosed via RT-PCR. These studies were randomly selected from an image database consisting of COVID-19 patients evaluated in the emergency department with portable ultrasound devices. Physicians were blinded to any patient information or previous LUS interpretation. Kappa values (κ) were used to calculate IRR.

resultsThere was substantial IRR on the following items: normal LUS scan (κ = 0.79 [95% CI: 0.72-0.87]), presence of B-lines (κ = 0.79 [95% CI: 0.72-0.87]), ≥3 B-lines observed (κ = 0.72 [95% CI: 0.64-0.79]). Moderate IRR was observed for the presence of any consolidation (κ = 0.57 [95% CI: 0.50-0.64]), subpleural consolidation (κ = 0.49 [95% CI: 0.42-0.56]), and presence of effusion (κ = 0.49 [95% CI: 0.41-0.56]). Fair IRR was observed for pleural thickening (κ = 0.23 [95% CI: 0.15-0.30]). DISCUSSION: Many LUS manifestations for COVID-19 appear to have moderate to substantial IRR across providers from multiple specialties utilizing differing portable devices. The most reliable LUS findings with COVID-19 may include the presence/count of B-lines or determining if a scan is normal. Clinical protocols for LUS with COVID-19 may require additional observers for the confirmation of less reliable findings such as consolidations.

Indexed as

COVID-19HumansLungObserver VariationReproducibility of ResultsSARS-CoV-2UltrasonographyCOVID-19interobserver agreementinterraterlungPOCUSreliabilitySARS-CoV-2ultrasound

Identifiers

PMID33426734
PMCPMC8013417
OpenAlexW3078354330

What OpenQuestion holds

Textmetadata
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.