ABSTRACT
Patients undergoing surgery for malignancy are at increased risk of initial and recurrent
venous thromboembolism (VTE). Several factors have been found to increase the risk
of deep vein thrombosis (DVT) in cancer patients both during the first days after
the operation and after discharge from hospital. Although, in general, thromboprophylaxis
is provided to cancer patients after surgery, the length of time these patients require
prophylaxis has not yet been established. Autopsy series, clinical series, and clinical
trials indicate that up to about 40% of VTE occurs post discharge. General surgical
patients undergoing major abdominal surgery require VTE prophylaxis, and prolonged
thromboprophylaxis should be considered in the post-discharge period in high-risk
patients, particularly those with cancer. Evidence from studies in general and orthopedic
surgery show that prolonged prophylaxis reduces the number of thromboembolic events
after discharge from hospital. Prophylaxis should be simple, safe, and effective and
should be administered easily to allow continuation of therapy after discharge. Low-molecular-weight
heparins are potentially the most suitable agents for long-term thromboprophylaxis
in cancer patients.
KEYWORD
Thromboprophylaxis - deep-vein thrombosis - pulmonary embolism - low-molecular-weight
heparin (LMWH) - cancer surgery