Alterations in Blood Flow-patho

Pulselessness acute arterial occlusion treatment

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Unformatted text preview: ions---6 “P’s”---pallor, Clinical paraesthesia, paralysis, pain, polar, pulselessness. pulselessness. Acute Arterial Occlusion Treatment: Loosen tight dressing Cut cast Anticoagulant therapy Thrombolytic therapy- clot busters Bypass surgery Embolectomy Amputation Risks for Vascular Insufficiency Risks Arterial – – – – – – – – smoking atherosclerosis inflammatory:Buergers trauma DIC emboli from LV vasospasm diabetes mellitus Venous – stasis of blood flow immobility R heart failure prolonged standing obesity pregnancy – trauma – hypercoagulable high platelets high hematocrit Alterations in Venous Flow Result of obstruction to flow or structural alterations. Incompetent valves (obesity, pregnancy, right heart failure, prolonged standing) producing varicose veins, chronic venous insufficiency, and obstruction by deep vein thrombosis. Accompanied by edema, venous stasis ulcers, and pain. Deep vein thrombosis can be life threatening. Alterations in Venous Flow Alterations Varicose Veins Chronic Venous Insufficiency Deep Vein Thrombosis Valvular Incompetence Valvular Intimal folds of veins that forms valves can be damaged interfering with blood flow in the venous system. Overstretching of the valves owing to excessive venous pressures resulting in backflow of blood Results in: • Venous insufficiency • Varicose veins Varicose Veins Varicose Impaired venous return results in increased capillary Impaired pressure causing edema, and superficial, darkened, raised, and tortuous veins. Primary varicosities may be familial, often first appearing Primary during pregnancy. during Secondary causes of varicosities include extrinsic venous Secondary compression, prior DVT, congenital lesions, arteriovenous fistulas. fistulas. Superficial vein that is twisted and enlarged. Occurs most often in lower extremities. Loss of elasticity of the vein wall and incompetent valves. Incompetent valves causes reduction in venous return, Incompetent increased venous pressure, and venous stasis. increased S&S include distended veins, heaviness in legs, swelling in S&S lower extremities, stasis ulcers. lower Greater saphenous vein most commonly affected Varicose Vein Varicose Varicose Vein Varicose Chronic Venous Insufficiency Chronic Results when va...
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This document was uploaded on 03/25/2014.

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