Toggle Main Menu Toggle Search

Open Access padlockePrints

SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study

Lookup NU author(s): John Hammond, John Moir, Dr Corey ChanORCiD, Nick Dawe, Roxane Hillier, Dr Sam Tingle, Dr Timothy Williams

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

© 2021 The Authors. Anaesthesia published by John Wiley & Sons Ltd on behalf of Association of Anaesthetists.SARS-CoV-2 has been associated with an increased rate of venous thromboembolism in critically ill patients. Since surgical patients are already at higher risk of venous thromboembolism than general populations, this study aimed to determine if patients with peri-operative or prior SARS-CoV-2 were at further increased risk of venous thromboembolism. We conducted a planned sub-study and analysis from an international, multicentre, prospective cohort study of elective and emergency patients undergoing surgery during October 2020. Patients from all surgical specialties were included. The primary outcome measure was venous thromboembolism (pulmonary embolism or deep vein thrombosis) within 30 days of surgery. SARS-CoV-2 diagnosis was defined as peri-operative (7 days before to 30 days after surgery); recent (1–6 weeks before surgery); previous (≥7 weeks before surgery); or none. Information on prophylaxis regimens or pre-operative anti-coagulation for baseline comorbidities was not available. Postoperative venous thromboembolism rate was 0.5% (666/123,591) in patients without SARS-CoV-2; 2.2% (50/2317) in patients with peri-operative SARS-CoV-2; 1.6% (15/953) in patients with recent SARS-CoV-2; and 1.0% (11/1148) in patients with previous SARS-CoV-2. After adjustment for confounding factors, patients with peri-operative (adjusted odds ratio 1.5 (95%CI 1.1–2.0)) and recent SARS-CoV-2 (1.9 (95%CI 1.2–3.3)) remained at higher risk of venous thromboembolism, with a borderline finding in previous SARS-CoV-2 (1.7 (95%CI 0.9–3.0)). Overall, venous thromboembolism was independently associated with 30-day mortality (5.4 (95%CI 4.3–6.7)). In patients with SARS-CoV-2, mortality without venous thromboembolism was 7.4% (319/4342) and with venous thromboembolism was 40.8% (31/76). Patients undergoing surgery with peri-operative or recent SARS-CoV-2 appear to be at increased risk of postoperative venous thromboembolism compared with patients with no history of SARS-CoV-2 infection. Optimal venous thromboembolism prophylaxis and treatment are unknown in this cohort of patients, and these data should be interpreted accordingly.


Publication metadata

Author(s): Li E, Hammond J, Moir J, Abbadessa F, Chan C, Dawe N, De Silva C, Ferrara M, Hillier R, Kadhim MR, Myszkowski S, Salisbury T, Sudworth P, Tingle S, Williams T

Publication type: Article

Publication status: Published

Journal: Anaesthesia

Year: 2022

Volume: 77

Issue: 1

Pages: 28-39

Print publication date: 01/01/2022

Online publication date: 24/08/2021

Acceptance date: 20/07/2021

ISSN (print): 0003-2409

ISSN (electronic): 1365-2044

Publisher: John Wiley and Sons Inc

URL: https://doi.org/10.1111/anae.15563

DOI: 10.1111/anae.15563

PubMed id: 34428858


Altmetrics

Altmetrics provided by Altmetric


Share