HMG-CoA reductase inhibitors, other lipid-lowering medication, antiplatelet therapy, and the risk of venous thrombosis

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Ramcharan, A.S. and Stralen van, K.J. and Snoep, J.D. and Mantel-Teeuwisse, A.K. and Doggen, C.J.M. (2009) HMG-CoA reductase inhibitors, other lipid-lowering medication, antiplatelet therapy, and the risk of venous thrombosis. Journal of Thrombosis and Haemostasis, 7 (4). pp. 514-520. ISSN 1538-7933

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Abstract:Background: Statins [3-hydroxymethyl-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors] and antiplatelet therapy reduce the risk of atherosclerotic disease. Besides a reduction of lipid levels, statins might also have antithrombotic and anti-inflammatory properties, and anti-platelet therapy reduces clot formation. We have studied the risk of venous thrombosis with use of statins, other lipid-lowering medication, and antiplatelet therapy. Materials and methods: Patients with a first episode of deep vein thrombosis in the leg or pulmonary embolism between March 1999 and September 2004 were included in a large population-based case–control study (MEGA study). Control subjects were partners of patients (53%) or recruited via a random-digit-dialing method (47%). Participants reported different all-medication use in a questionnaire. Results: Of 4538 patients, 154 used statins (3.3%), as did 354 of 5914 control subjects (5.7%). The use of statins [odds ratio (OR) 0.45; 95% confidence interval (CI) 0.36–0.56] but not other lipid-lowering medications (OR 1.22; 95% CI 0.62–2.43), was associated with a reduced venous thrombosis risk as compared with individuals who did not use any lipid-lowering medication, after adjustment for age, sex, body mass index, atherosclerotic disease, antiplatelet therapy and use of vitamin K antagonists. Different types and various durations of statin therapy were all associated with a decreased venous thrombosis risk. Antiplatelet therapy also reduced venous thrombosis risk (OR 0.56; 95% CI 0.42–0.74). However, sensitivity analyses suggested that this effect is most likely explained by a so-called ‘healthy user effect’. Simultaneous use of medication most strongly reduced venous thrombosis risk. Conclusion: These results suggest that the use of various types of statins is associated with a reduced risk of venous thrombosis, whereas antiplatelet therapy and other lipid-lowering medications are not.
Item Type:Article
Copyright:© John Wiley & Sons, Inc
Link to this item:http://purl.utwente.nl/publications/76796
Official URL:http://dx.doi.org/10.1111/j.1538-7836.2008.03235.x
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