ABSTRACT
This chapter includes recommendations from an international consensus statement for prevention and treatment of venousthrombo-embolism (VTE). Clinical scores can help determine probability of deep vein thrombosis and pulmonary embolism. Continue with the patient laying supine andthe limb externally rotated to examine thefemoral and great saphenous veins from anantero-medial approach. A preferred method to view calf veins isto sit the patient on the side of the bedfacing the sonographer with the foot on thesonographers knee to allow calf muscles todrop away and better fill veins. Cancer associated with VTE is usuallyknown to be present so that screening for undiagnosed cancer is not often required. However, a general history and examination, including rectal and pelvic examination, areindicated, and routine age-appropriate can-cer screening such as chest X-ray, mammog-raphy and breast ultrasound, and blood testsfor prostate specific antigens are performed. Ultrasound provides an opportunity to make a differential diagnosis inmost patients.
