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  • Title: Inflammatory bowel disease increases the risks of deep vein thrombosis and pulmonary embolism in the hospitalized patients: a nationwide cohort study.
    Author: Chung WS, Lin CL, Hsu WH, Kao CH.
    Journal: Thromb Res; 2015 Mar; 135(3):492-6. PubMed ID: 25596768.
    Abstract:
    BACKGROUND & AIMS: We conducted a nationwide, population-based cohort study to evaluate the effects of inflammatory bowel disease (IBD) on the risks of developing deep vein thrombosis (DVT) and pulmonary embolism (PE) in Taiwan. METHODS: We randomly selected the study cohort with IBD from the National Health Insurance (NHI) database (N = 23.74 million) and the control cohort without IBD who was frequency-matched the study cohort based on age, sex, and index year to each IBD patient between 2000 and 2010. Using a follow-up period ending in 2011, we analyzed the risks of DVT and PE using Cox proportional hazard regression analyses. RESULTS: The 11 445 IBD patients and 45 780 controls were followed 65 256 and 293 377 person-years, respectively. After adjusting for age, sex, and comorbidities, the risks of IBD patients developing DVT and PE was 1.98-fold and 1.80-fold higher, respectively, than those of the comparison cohort. The IBD patients presenting with 2 or more annual hospitalizations exhibited a significantly greater risk of developing DVT (adjusted hazard ratio [HR] 32.9, 95% confidence interval [CI] 20.5-52.8) and PE (adjusted HR = 24.2, 95% CI = 11.1-52.9) than did the comparison cohort. Women with IBD showed a significantly greater risk of DVT and PE than did the comparison cohort (adjusted HR = 1.80, 95% CI = 1.18-2.78 for DVT and adjusted HR=2.08, 95% CI = 1.14-3.80 for PE respectively). CONCLUSION: The risks of DVT and PE are significantly higher in IBD patients compared with risks in the general population. WHAT IS CURRENT KNOWLEDGE: Thromboembolic complications are easily overlooked in IBD patients. WHAT IS NEW HERE: The risks of DVT and PE are significantly higher in IBD patients.
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