Evidence map›Paper›PMID 33098540›Full record

Observational studyJournal of thrombosis and thrombolysis2021

COVID-19 associated coagulopathy in critically ill patients: A hypercoagulable state demonstrated by parameters of haemostasis and clot waveform analysis.

Bingwen Eugene Fan, Jensen Ng, Stephrene Seok Wei Chan, Dheepa Christopher, Allison Ching Yee Tso, Li Min Ling, Barnaby Edward Young, Lester Jun Long Wong, Christina Lai Lin Sum, Hwee Tat Tan and 5 more

Abstract readObservational Study
In one paragraph

Observational study in Journal of thrombosis and thrombolysis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Article
  8. Review
  9. Computational Modeling of Pro-inflammatory Cytokine-Enhanced Blood Coagulation.Computational and structural biotechnology journal · 2026
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Clot Waveform Analysis for Hemostatic Abnormalities.Annals of laboratory medicine · 2023
    Review
  17. The immunology of long COVID.Nature reviews. Immunology · 2023
    Review
  18. Article
  19. COVID-19 and antiphospholipid antibodies.Best practice & research. Clinical haematology · 2022
    Review
  20. Article
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

15 authors.

Bingwen Eugene FanDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore. Bingwen_Eugene_Fan@ttsh.com.sg.ORCID http://orcid.org/0000-0003-4367-5182
Jensen NgDepartment of Anaesthesiology, Intensive Care and Pain Medicine, Tan Tock Seng Hospital, Singapore, Singapore.
Stephrene Seok Wei ChanDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Dheepa ChristopherDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Allison Ching Yee TsoDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Li Min LingDepartment of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore.
Barnaby Edward YoungDepartment of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore.
Lester Jun Long WongDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Christina Lai Lin SumDepartment of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore.
Hwee Tat TanDepartment of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore.
Mui Kia AngDepartment of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore.
Gek Hsiang LimClinical Research and Innovation Office, Tan Tock Seng Hospital, Singapore, Singapore.
Kiat Hoe OngDepartment of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Ponnudurai Kuperan *Department of Haematology, Tan Tock Seng Hospital, Singapore, Singapore.
Yew Woon Chia *Department of Cardiology, Tan Tock Seng Hospital, Singapore, Singapore.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Patients with COVID-19 are known to be at risk of developing both venous, arterial and microvascular thrombosis, due to an excessive immuno-thrombogenic response to the SARS-CoV-2 infection. Overlapping syndromes of COVID-19 associated coagulopathy with consumptive coagulopathy and microangiopathy can be seen in critically ill patients as well. Blood was collected from 12 Intensive Care Unit (ICU) patients with severe COVID-19 who were on either mechanical ventilation or on high flow oxygen with a PaO2/FiO2 ratio of <300 mmHg. Laboratory tests were performed for parameters of haemostasis, clot waveform analysis and anti-phospholipid antibodies. CWA parameters were raised with elevated aPTT median Min1 (clot velocity) 9.3%/s (IQR 7.1-9.9%/s), elevated PT median Min1 10.3%/s (IQR 7.1-11.1%/s), elevated aPTT median Min2 (clot acceleration) 1.5%/s

Indexed as

Blood CoagulationAdultBlood Coagulation TestsCOVID-19Critical IllnessFemaleHumansLupus Coagulation InhibitorMaleMiddle AgedRetrospective StudiesThrombophiliaLupus Coagulation InhibitorCoronavirusHypercoagulabilitySepsisThrombophiliaThrombosis

Identifiers

PMID33098540
PMCPMC7584863

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.