Abstract
The objective of this study is to evaluate the effect of autoimmune disease on the risk of venous thromboembolism (VTE) including deep vein thrombosis (DVT) and pulmonary embolism (PE) in pregnant women. Using the Health Care Cost and Utilization Project, Nationwide Inpatient Sample database from 2003 to 2011, the risk of developing DVT, PE, and VTE among pregnant patients with selected autoimmune diseases was estimated using unconditional logistic regression analysis. Our study cohort consisted of 7 917 453 women of which 43 523 had underlying autoimmune diseases. Risk of VTE was high in pregnant women with systemic lupus erythematosus, dermatomyositis, rheumatoid arthritis, type 1 diabetes mellitus, ulcerative colitis, and Crohn's disease. Most autoimmune diseases considerably increase the risk of VTE. Thromboprophylaxis may be considered in pregnancies with autoimmune disease, particularly those with systemic lupus erythematosus and dermatomyositis.
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