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P221 Thromboembolic events in hospitalised patients with inflammatory bowel disease – a large tertiary hospital experience

A. Levartovsky1, Y. Barash2,3, S. Ben-Horin1, B. Ungar1, E. Klang2,3, S. Soffer2,3, U. Kopylov1

1Department of Gastroenterology, Sheba Medical Center, Tel Hashomer, Israel, 2Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel, 3DeepVision Lab, Sheba Medical Center, Tel Hashomer, Israel

Background

Patients with inflammatory bowel disease (IBD) have a greater risk of venous thromboembolism (VTE) events compared with the general population especially during flares, in both hospitalised and ambulatory patients. Although VTE prophylaxis (thromboprophylaxis) is recommended in hospitalised IBD patients, the implementation is not universal, especially for non-IBD-related hospitalisations. In this study, we aimed to present the rates of VTEs and thromboprophylaxis among hospitalised IBD patients.

Methods

We created an electronic data repository of all IBD patients who visited the emergency department (ED) of our tertiary medical centre between 2012 and 2018. Data included tabular demographic and clinical variables (reason for referral, VTEs, clinical characteristics, hospitalisation, lab results, treatment and outcome) as well as free-text physician records. For this study, we searched the data repository for VTE cases, using ICD10 coding.

Results

Overall, there were 7009 ED visits of 2405 patients with IBD, 1556 (64.7%) Crohn's disease and 849 (35.3%) Ulcerative colitis patients. Thromboprophylaxis was administered in 463 hospitalisations (12.4% of IBD-related and 10.9% of non-IBD-related hospitalisations). 1.5% of patients (36/2405) who visited the ED had a new VTE. Thirty patients were diagnosed with a deep vein thrombosis (DVT), two patients with a pulmonary embolism (PE) and six additional patients were diagnosed with both a DVT and PE in the same hospitalisation. Eleven patients had a VTE during a non-IBD-related hospitalisation and six patients during an IBD-related hospitalisation (0.6% vs. 0.3%, respectively, pv = 0.12). Five patients (29.4%) developed VTEs after receiving thromboprophylaxis during hospitalisation. The majority (72.7%) of VTEs diagnosed during a non-IBD-related hospitalisation did not have additional thrombosis-related risk factors. One patient died during hospitalisation and two more patients died in the upcoming 30 days (unrelated to VTEs).

Conclusion

The rate of thromboprophylaxis in hospitalised IBD patients is low, despite posing life-threatening implications. Thromboprophylaxis should be implemented in IBD patients hospitalised for all indications.