Major causes include: decreased sympathetic response to position changes and the loss of reflex vasoconstriction; decreased vascular tone; excessive venous pooling in the lower limbs; and decreased ...

THE term "varicose veins" customarily suggests, immediately, and almost exclusively, abnormal dilatations and tortuosities of the saphenous veins of the lower ... venous drainage of the upper ...

However, in patients with clinical findings suggestive of lower extremity DVT, venous compression US might avoid the need for CT. Furthermore, contraindications to CT limit its usefulness ...

The symptoms include those of right heart failure predominantly dyspnea on exertion.Lower extremity dependant ... inspiration due to the increased venous return to the right heart resulting ...

Patients with active cancer 20 (see the Supplementary Appendix for definitions) and venous thromboembolism (defined as proximal deep-vein thrombosis of the lower limb [popliteal or more proximal ...