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

Collaborative, COVIDSurg and Collaborative, GlobalSurg and Ab. Rahman, Norhafiza and Ab. Rashid, Islah Munjih and Abd Aziz, Mohd Fahmi and Abdul Rahman, Mohd Norhisham Azmi and Amjad, Nasser Mohammad and Che Alhadi, Shahidah and Elagili, Faisal and Kamarulzaman, Mohd Nazli and Md Nor, Azmi and Othman, Ahmad Faidzal and Sainal, Mohd. Yusof and Sarif, Mat Salleh (2021) SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study. Anaesthesia. pp. 1-12. E-ISSN 1365-2044

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Abstract

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.

Item Type:	Article (Journal)
Additional Information:	7054/91804
Uncontrolled Keywords:	COVID-19; SARS-CoV-2; deep vein thrombosis; pulmonary embolism; venous thromboembolism.
Subjects:	R Medicine > R Medicine (General) R Medicine > RA Public aspects of medicine R Medicine > RD Surgery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Medicine Kulliyyah of Medicine > Department of Surgery
Depositing User:	Dr Norhafiza Ab. Rahman
Date Deposited:	30 Aug 2021 11:21
Last Modified:	05 Jan 2024 16:29
URI:	http://irep.iium.edu.my/id/eprint/91804

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