Summary
Patients with atherosclerosis have an increased risk of venous thromboembolism (VTE).
We studied patients in the population-based Worcester VTE Study of 1,822 consecutive
patients with validated VTE to compare clinical characteristics, prophylaxis, treatment,
and outcomes of VTE in patients with and without symptomatic atherosclerotic cardiovascular
disease, defined as history of ischaemic heart disease, history of positive cardiac
catheterisation, percutaneous coronary intervention, or coronary artery bypass graft
surgery, or history of peripheral artery disease. Of the 1,818 patients with VTE,
473 (26%) had a history of symptomatic atherosclerosis. Patients with atherosclerosis
were significantly older (mean age 71.9 years vs. 61.6 years) and were more likely
to have immobility (57.2% vs. 46.7%), prior heart failure (36.9% vs. 10.7%), chronic
lung disease (26.4% vs. 15.5%), cerebrovascular disease (18.1% vs. 9.8%), and chronic
kidney disease (4.9% vs. 1.9%) (all p<0.001) compared with non-atherosclerosis patients.
Thromboprophylaxis was omitted in more than one-third of atherosclerosis patients
who had been hospitalised for non-VTE-related illness or had undergone major surgery
within the three months prior to VTE. Patients with atherosclerosis were significantly
more likely to suffer in-hospital major bleeding (7.6% vs. 3.8%, p=0.0008). In conclusion,
patients with atherosclerosis and VTE are more likely to suffer a complicated hospital
course. Despite a high frequency of comorbid conditions contributing to the risk of
VTE, we observed a low rate of thromboprophylaxis in patients with symptomatic atherosclerosis.
Keywords
Atherosclerosis - deep-vein thrombosis - prophylaxis - pulmonary embolism - treatment
- venous thromboembolism