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  • Title: Venous Thromboembolism Following Discharge from Hospital in Patients Admitted for Inflammatory Bowel Disease.
    Author: Harvey PR, Coupland B, Mytton J, De Silva S, Trudgill NJ.
    Journal: J Crohns Colitis; 2023 Jan 27; 17(1):103-110. PubMed ID: 35948280.
    Abstract:
    BACKGROUND AND AIMS: Patients admitted to hospital with inflammatory bowel disease[IBD] are at increased risk of venous thromboembolism[VTE]. This study aims to identify IBD patients at increased VTE risk on hospital discharge and to develop a risk scoring system to recognise them. METHODS: Hospital episode statistics data were used to identify all patients admitted with IBD as an emergency or electively for surgery. All patients with VTE within 90 days of hospital discharge were identified. A multilevel logistic regression model was used to identify patient- and admission-level factors associated with VTE. A scoring system to identify patients at higher risk for VTE was constructed. RESULTS: A total of 201 779 admissions in 101 966 patients were included. The rate of VTE within 90 days was 17.2 per 1000 patient-years at risk and was highest in patients admitted as an emergency who underwent surgery[36.9]. VTE was associated with: female sex (odds ratio 0.65 [95% confidence interval 0.53-0.80], p <0.001); increasing age [49-60 years] (4.67 [3.36-6.49], p <0.001); increasing length of hospital stay [>10 days] (3.80 [2.80-5.15], p <0.001); more than two hospital admissions in previous 3 months (2.23 [1.60-3.10], p <0.001); ulcerative colitis (1.48 [1.21-1.82], p <0.001); and emergency admission including surgery (1.59 [1.12-2.27], p = 0.010); or emergency admission not including surgery (1.59 [1.08-2.35], p = 0.019) compared with elective surgery. A score >12 in the VTE scoring system gave a positive predictive value [PPV] of VTE of 1%. The area under the curve [AUC] was 0.714 [95% CI 0.70-0.73]. CONCLUSION: IBD patients admitted to hospital with a prolonged length of stay, increasing age, male sex, or as an emergency were at increased risk of VTE following discharge. Higher-risk patients were identifiable by a VTE risk scoring system.
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