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Chronic venous insufficiency (CVI) is a medical condition characterized by blood pooling in the veins, leading to increased pressure and strain on the vein walls. [1] The most common cause of CVI is superficial venous reflux, which often results in the formation of varicose veins, a treatable condition. [2]
The main cause of endothelial dysfunction is impaired bioavailability of nitric oxide. [ 1 ] In addition to acting as a semipermeable membrane , the endothelium is responsible for maintaining vascular tone and regulating oxidative stress by releasing mediators, such as nitric oxide, prostacyclin and endothelin , and by controlling local ...
Bradykinin (BK) (from Greek brady-'slow' + -kinin, kīn(eîn) 'to move') is a peptide that promotes inflammation.It causes arterioles to dilate (enlarge) via the release of prostacyclin, nitric oxide, and endothelium-derived hyperpolarizing factor and makes veins constrict, via prostaglandin F2, thereby leading to leakage into capillary beds, due to the increased pressure in the capillaries.
The exact cause of lipodermatosclerosis is unknown. [3] [6] Venous disease, such as venous incompetence, venous hypertension, and body mass may be relevant to the underlying pathogenesis. [3] Increased blood pressure in the veins (venous hypertension) can cause diffusion of substances, including fibrin, out of capillaries.
[19] [20] Both ovarian and internal iliac vein reflux causes leg varicose veins. This condition affects 14% of women with varicose veins or 20% of women who have had vaginal delivery and have leg varicose veins. [21] In addition, evidence suggests that failing to look for and treat pelvic vein reflux can be a cause of recurrent varicose veins. [22]
Knee-high stockings are more comfortable, easier to apply, and wearing them increases patients' compliance with treatment. [22] Knee-high stockings are easier to size for limb measurement than thigh-high compression stockings. [9] Thigh-high compression stockings may create a tourniquet effect and cause localized restriction when rolled down. [23]
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