TY - CHAP M1 - Book, Section TI - Venous Insufficiency, Chronic A1 - Doherty, Gerard M. Y1 - 2010 N1 - T2 - Quick Answers Surgery AB - • Chronic venous insufficiency (CVI) caused by chronic elevation in venous pressure• 3 factors1. Calf muscle pump dysfunction2. Valvular reflux3. Outflow obstruction• Venous outflow obstruction results in "venous claudication" pain during exercise• Valvular incompetence -Congenital or secondary to phlebitis-Varicose veins-Deep venous thrombosis (DVT)• Venous stasis changes centered in "gaiter areas" around ankles: commonly affected perforator veins, region of sparse soft-tissue support• Local inflammation, hemosiderin deposits, leakage of plasma fluid results in fibrosis and ulceration• Isolated saphenous vein incompetence & DVT can lead to chronic venous stasis changes• May-Thurner syndrome: Compression of left iliac vein by right iliac artery causing venous stasis, CVI SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accesssurgery.mhmedical.com/content.aspx?aid=58105420 ER -