Evidence map›Paper›PMID 33017480›Full record

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

Incidence of Deep Venous Thrombosis in Patients With COVID-19 and Pulmonary Embolism: Compression Ultrasound COVID Study.

Anabel Franco-Moreno, Maria Herrera-Morueco, Beatriz Mestre-Gómez, Nuria Muñoz-Rivas, Ane Abad-Motos, Danilo Salazar-Chiriboga, Mercedes Duffort-Falcó, Pilar Medrano-Izquierdo, Ana Bustamante-Fermosel, Virginia Pardo-Guimera and 3 more

Open access · bronzeAbstract readObservational Study
In one paragraph

Observational study 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 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.8field-weighted citation impact, top 10% 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, 20 citations in OpenAlex.

  1. Deep Vein Thrombosis in Critically Ill Patients With COVID-19 Pneumonia: Incidence, Wells Score Diagnostic Performance, and Hospital Prognosis.Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2026
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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

13 authors at 1 institution in 1 country.

Anabel Franco-MorenoDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.ORCID https://orcid.org/0000-0003-1061-0200
Maria Herrera-MoruecoDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Beatriz Mestre-GómezDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Nuria Muñoz-RivasDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Ane Abad-MotosDepartment of Anesthesiology, Infanta Leonor University Hospital, Madrid, Spain.
Danilo Salazar-ChiribogaDepartment of Radiology, Infanta Leonor University Hospital, Madrid, Spain.
Mercedes Duffort-FalcóDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Pilar Medrano-IzquierdoDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Ana Bustamante-FermoselDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Virginia Pardo-GuimeraDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Mariano Ulla-AnésDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Juan Torres-MachoDepartment of Internal Medicine, Infanta Leonor University Hospital, Madrid, Spain.
Infanta Leonor Thrombosis Research Group
Hospital Universitario Infanta Leonor · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesSeveral reports had observed a high risk of pulmonary embolism (PE) in patients with coronavirus disease 2019 (COVID-19), most of them in the intensive care unit. Reported findings indicate that a direct viral-mediated hyperinflammatory response leads to local thromboinflammation. According to those findings, the incidence of deep venous thrombosis (DVT) in patients with COVID-19 and PE should be low. The objective of this study was to evaluate the incidence of DVT in patients with COVID-19 who developed PE.

methodsIn this prospective observational study, consecutive patients hospitalized in the internal medicine ward with a diagnosis of COVID-19 who developed PE were screened for DVT in the lower extremities with complete compression ultrasound.

resultsThe study comprised 26 patients. Fifteen patients (57.7%) were male. The median age was 60 years (interquartile range, 54-73 years). Compression ultrasound findings were positive for DVT in 2 patients (7.7%; 95% confidence interval, 3.6%-11.7%). Patients with DVT had central and bilateral PE. In both, venous thromboembolism was diagnosed in the emergency department, so they did not receive previous prophylactic therapy with low-molecular-weight heparin. Patients without DVT had higher median d-dimer levels: 25,688 μg/dL (interquartile range, 80,000-1210 μg/dL) versus 5310 μg/dL (P < .05).

conclusionsOur study showed a low incidence of DVT in a cohort of patients with COVID-19 and PE. This observation suggests that PE in these patients could be produced mainly by a local thromboinflammatory syndrome induced by severe acute respiratory syndrome coronavirus 2 infection and not by a thromboembolic event.

Indexed as

COVID-19Pulmonary EmbolismThrombosisVenous ThrombosisFemaleHumansIncidenceInflammationMaleMiddle AgedRisk FactorsSARS-CoV-2compression ultrasoundcoronavirus disease 2019COVID-19deep venous thrombosispulmonary embolismthromboinflammatory syndrome

Identifiers

PMID33017480
PMCPMC7675470
OpenAlexW3090180198

What OpenQuestion holds

Textmetadata
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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.