Evidence map›Paper›PMID 33186849›Full record

ArticleThrombosis research2021

The effect of anticoagulation on clinical outcomes in novel Coronavirus (COVID-19) pneumonia in a U.S. cohort.

Lei Lynn, Juan A Reyes, Katrina Hawkins, Arjun Panda, Laura Linville, Walaa Aldhahri, Ghazal Kango, Sneha Shah, Shant Ayanian, Karolyn Teufel

Open access · bronzeAbstract readLetterComment
In one paragraph

Article in Thrombosis research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
1.0field-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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 46 citations in OpenAlex.

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  12. Thromboprophylaxis in COVID-19: Weight and severity adjusted intensified dosing.Research and practice in thrombosis and haemostasis · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Lei LynnDivision of Hospital Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America. Electronic address: Ldu@mfa.gwu.edu.
Juan A ReyesDivision of Hospital Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America. Electronic address: jreyes@mfa.gwu.edu.
Katrina HawkinsDepartment of Anesthesiology and Critical Care Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Arjun PandaDepartment of Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Laura LinvilleDepartment of Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Walaa AldhahriDepartment of Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Ghazal KangoDivision of Hospital Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Sneha ShahDepartment of Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Shant AyanianDivision of Hospital Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
Karolyn TeufelDivision of Hospital Medicine, The George Washington University School of Medicine and Health Sciences, The GW Medical Faculty Associates, Washington, DC, United States of America.
GW Medical Faculty Associates · USGeorge Washington University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCOVID-19 infection is associated with D-dimer elevations, high rates of thrombus formation, and poor clinical outcomes. We sought to determine if empiric therapeutic anticoagulation (AC) affected survival in COVID-19 patients compared to standard prophylactic AC.

methodsRetrospective analysis of 402 COVID-19 patients hospitalized between March 15 and May 31, 2020 was performed. Clinical outcomes were compared between 152 patients treated with therapeutic AC to 250 patients on prophylactic AC. An elastic net logistic regression was designed to first identify the important variables affecting mortality. These variables were then included as covariates to AC in standard multivariate logistic regression models studying the effect of AC on death. Nonparametric survival analysis was conducted, and Kaplan Meier curves were constructed.

resultsIncreased mortality was associated with therapeutic AC [OR 3.42 (2.06, 5.67)]. The log-rank test was statistically significant at p = 0.001 showing higher mortality for patients treated with therapeutic AC compared to prophylactic AC. Subset analysis of critically ill and intubated patients had similar survival curves regardless of AC dose. The log-rank test was not significant even with Prentice modification. For non-ICU patients, the log rank test favoring prophylactic AC disappeared when the analysis was stratified by D-dimer level less or greater than 3 μg/mL. Approximately 9% of patients receiving therapeutic AC experienced clinically significant bleeding or thrombocytopenia, versus 3% in those receiving prophylactic AC.

conclusionsIn our cohort, therapeutic anticoagulation provided no mortality benefit over thromboprophylaxis, independent of co-morbidities or disease severity. More adverse events were observed with therapeutic AC.

Indexed as

COVID-19Venous ThromboembolismAnticoagulantsHumansPrevalenceRetrospective StudiesSARS-CoV-2Anticoagulants

Identifiers

PMID33186849
PMCPMC7644262
OpenAlexW3097754889

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.