Evidence map›Paper›PMID 34698582›Full record

SynthesisClinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis

COVID-19 Vaccine-Associated Thrombosis With Thrombocytopenia Syndrome (TTS): A Systematic Review and Post Hoc Analysis.

Muhammad Usman Hafeez, Maha Ikram, Zunaira Shafiq, Azza Sarfraz, Zouina Sarfraz, Vikash Jaiswal, Muzna Sarfraz, Ivan Chérrez-Ojeda

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
8.2field-weighted citation impact, top 2% 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

26 citing papers in PubMed, 46 citations in OpenAlex.

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  9. How We Interpret Thrombosis with Thrombocytopenia Syndrome?International journal of molecular sciences · 2024
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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

8 authors at 6 institutions in 3 countries.

Muhammad Usman Hafeez194832Central Park Medical College, Lahore, Pakistan.ORCID https://orcid.org/0000-0002-3504-8237
Maha Ikram427002Shalamar Medical and Dental College, Lahore, Pakistan.ORCID https://orcid.org/0000-0001-9189-3112
Zunaira Shafiq66873Fatima Jinnah Medical University, Lahore, Pakistan.ORCID https://orcid.org/0000-0002-8021-0889
Azza Sarfraz9615The Aga Khan University, Karachi, Pakistan.ORCID https://orcid.org/0000-0001-8206-5745
Zouina Sarfraz66873Fatima Jinnah Medical University, Lahore, Pakistan.ORCID https://orcid.org/0000-0002-5132-7455
Vikash Jaiswal471979AMA School of Medicine, Makati, Philippines.
Muzna Sarfraz66886King Edward Medical University, Lahore, Pakistan.ORCID https://orcid.org/0000-0002-1406-5740
Ivan Chérrez-Ojeda27890Universidad Espíritu Santo, Samborondón, Ecuador.
Fatima Jinnah Medical University · PKAga Khan University · PKAMA Computer University · PHKing Edward Medical University · PKShalamar Hospital · PKUniversidad de Especialidades Espíritu Santo · EC

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA new clinical syndrome has been recognized following the COVID-19 vaccine, termed thrombosis with thrombocytopenia syndrome (TTS). The following systematic review focuses on extrapolating thrombotic risk factors, clinical manifestations, and outcomes of patients diagnosed with TTS following the COVID-19 vaccine.

methodsWe utilized the World Health Organization's criteria for a confirmed and probable case of TTS following COVID-19 vaccination and conducted a systematic review and posthoc analysis using the PRISMA 2020 statement. Data analysis was conducted using SPSS V25 for factors associated with mortality, including age, gender, anti-PF4/heparin antibodies, platelet nadir, D-dimer peak, time to event diagnosis, arterial or venous thrombi.

resultsOf the 175 studies identified, a total of 25 studies with 69 patients were included in this systematic review and post hoc analysis. Platelet nadir (

conclusionAdenoviral COVID-19 vaccines have been shown to trigger TTS, however, reports of patients having received mRNA COVID-19 vaccines are also present. Healthcare providers are recommended to maintain a high degree of suspicion among individuals who have received the COVID-19 vaccine within the last 4 weeks.

Indexed as

COVID-19COVID-19 VaccinesHumansSARS-CoV-2ThrombocytopeniaThrombosisCOVID-19 Vaccinesanti-platelet factor-4COVID-19heparin-induced thrombocytopeniathrombosis with thrombocytopenia syndromeTTSvaccinevaccine-induced immune thrombotic thrombocytopeniaVITT

Identifiers

PMID34698582
PMCPMC8552386
OpenAlexW3210617075

What OpenQuestion holds

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LicenceCC BY-NC
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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.