What is the recommended duration of pharmacologic thromboprophylaxis after major colorectal surgery

What is known

- Pharmacologic (with mechanical) thromboprophylaxis is recommended perioperatively for hospitalized IBD patients undergoing major surgery ^1–3. - VTE risk remains elevated after discharge. Most outpatient VTE occurs within about 3 months of hospitalization, with highest readmission risk in the first ~10 days ^4,5.

What is unknown / caveats

- The retrieved excerpts do not state a specific recommended duration (number of days/weeks) of pharmacologic thromboprophylaxis after major colorectal surgery - No excerpt gives a defined post-colorectal-surgery prophylaxis duration

## References

1. Wang KT, Su MI, Chiou WR, Chao CL, Huang YF, Cheng CH. Impact of venous thromboembolism on mortality in hospitalized patients with inflammatory bowel disease: analysis of the MIMIC-IV database, 2008 to 2022. BMC Gastroenterol. 2025. PMID: 41267022.

2. Dwyer JP, Javed A, Hair CS, Moore GT. Venous thromboembolism and underutilisation of anticoagulant thromboprophylaxis in hospitalised patients with inflammatory bowel disease. Intern Med J. 2014. PMID: 24893756.

3. Martín-Masot R, Ortiz Pérez P, Serrano Nieto J, Martínez León M, Pascual Martínez A, Blasco-Alonso J, Navas-López VM. Central Venous Sinus Thrombosis in a Boy With Acute Severe Ulcerative Colitis. Front Pediatr. 2019. PMID: 30775357.

4. Bryant RV, Jairath V, Curry N, Travis SP. Thrombosis in inflammatory bowel disease: are we tailoring prophylaxis to those most at risk?. J Crohns Colitis. 2014. PMID: 24095288.

5. Levartovsky A, Barash Y, Ben-Horin S, Ungar B, Klang E, Soffer S, Kopylov U. Thromboprophylaxis for Hospitalized Patients with Inflammatory Bowel Disease-Are We There Yet?. J Clin Med. 2020. PMID: 32858826.

For educational use only, not a substitute for clinical judgement or medical advice. Consult qualified clinicians for diagnosis and treatment decisions. This tool may contain errors; use the flag button below to report inaccurate or harmful content.

---

_Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct._