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Disorders of Blood Flow in the Systemic Circulation

45 45 virchows triad associated with s venous

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Unformatted text preview: orm and saccular aneurysms – Most often found in the thoracic and abdominal aorta – Characterized by gradual and progressive enlargement of the aorta 41 41 Dissecting Aneurysms Acute, life­threatening condition – Involves hemorrhage into the vessel wall with longitudinal tearing (dissection) of the vessel wall to form a blood­filled channel Diagnosis: physical exam, CT and MRI studies Treatment: Surgery, medications often to reduce blood pressure 42 42 44 44 Disorders of the Venous Circulation Produce congestion of the affected tissues Predispose to clot formation – stagnation of flow – activation of the clotting system Types of disorders – Varicose veins – Thrombophlebitis Inflammatory proce the veins. 45 45 Virchow’’s Triad Associated with s Venous Thrombosis Venous Stasis of Blood Increased blood coagulability Vessel wall injury = Thrombus 46 46 Risk Factors Associated Risk with Venous Stasis Venous Bed rest Immobility Spinal cord injury Acute myocardial infarction (flow is diminished) Congestive heart failure Shock Venous obstruction 47 47 Risk Factors Associated with Hyperactivity Risk of blood coagulation of Stress and trauma Pregnancy Childbirth Oral contraceptive use Dehydration Cancer 48 48 Risk Factors Associated with Risk Vascular Trauma Vascular With indw catheters with pun vessel wa an obstru vessel. Indwelling venous catheters Surgery Massive trauma or infection Fractured hip Orthopedic surgery 49 49...
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