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CC BY 4.0 · TH Open 2024; 08(01): e146-e154
DOI: 10.1055/a-2275-9590
Original Article

Risk of Bleeding and Venous Thromboembolism after Colorectal Cancer Surgery in Patients with and without Type 2 Diabetes: A Danish Cohort Study

Frederik Pagh Bredahl Kristensen
1   Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus N, Denmark
,
Erzsébet Horváth-Puhó
1   Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus N, Denmark
,
Szimonetta Komjáthiné Szépligeti
1   Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus N, Denmark
,
Frederikke Schoenfeldt Troelsen
1   Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus N, Denmark
,
Henrik Toft Sørensen
1   Department of Clinical Epidemiology, Aarhus University Hospital and Aarhus University, Aarhus N, Denmark
› Author Affiliations
Source of Funding F.P.B. Kristensen is supported by a PhD grant from Aarhus University.
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Abstract

Background Bleeding and venous thromboembolism (VTE) are adverse outcomes after colorectal cancer (CRC) surgery. Type 2 diabetes (T2D) clusters with bleeding and VTE risk factors. We examined the bleeding and VTE risk in patients with T2D undergoing CRC surgery and the prognosis after these adverse outcomes.

Methods We conducted a prognostic population-based cohort study of 48,295 patients with and without T2D undergoing surgery for incident CRC during 2005 to 2019. Patients with T2D were diagnosed in a hospital setting or had redeemed a glucose-lowering drug prescription; the remaining cohort was patients without diabetes. We estimated the 30-day and 1-year risks of bleeding and VTE and used a Fine–Gray model to compute age-, sex-, and calendar year-adjusted subdistribution hazard ratios (SHRs). The Kaplan–Meier method was used to calculate 1-year mortality after bleeding or VTE.

Results Within 30 days after CRC surgery, the risk of bleeding was 2.7% in patients with T2D and 2.0% in patients without diabetes (SHR: 1.30 [95% confidence interval [CI]: 1.10–1.53]). For VTE, the 30-day risks were 0.6% for patients with T2D and 0.6% for patients without diabetes (SHR: 1.01 [95% CI: 0.71–1.42]). The SHRs for bleeding and VTE within 1 year after CRC surgery were similar. The 1-year mortality was 26.0% versus 24.9% in the bleeding cohort and 25.8% versus 27.5% in the VTE cohort for patients with T2D versus without diabetes, respectively.

Conclusion Although absolute risks were low, patients with T2D have an increased risk of bleeding but not VTE after CRC surgery.

Keywords

type 2 diabetes - bleeding - venous thromboembolism - colorectal cancer

Author Contributions

F.P.B. Kristensen: conception and design, interpretation of data, drafting of the manuscript, and critical revision of the manuscript for important intellectual content. E. Horváth-Puhó: conception and design, interpretation of data, data management, statistical analyses, and critical revision of the manuscript for important intellectual content. S.K. Szépligeti: conception and design, interpretation of data, data management, statistical analyses, and critical revision of the manuscript for important intellectual content. F.S. Troelsen: conception and design, interpretation of data, drafting of the manuscript, and critical revision of the manuscript for important intellectual content. H.T. Sørensen: acquisition of data, conception and design, interpretation of data, critical revision of the manuscript for important intellectual content, and supervision.


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Publication History

Received: 15 November 2023

Accepted: 23 February 2024

Accepted Manuscript online:
26 February 2024

Article published online:
26 March 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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