<unk>  prevention is initiated with assessing the risk for its development. Some people have a higher risk of developing<unk>  and its possible development into thromboembolism. Some of these risk factors are related to inflammation. "Virchow's triad" has been suggested to describe the three factors necessary for the formation of<unk> : stasis of blood, vessel wall injury, and altered blood coagulation. Some risk factors predispose for venous<unk>  while others increase the risk of arterial<unk> . Newborn babies in the neonatal period are also at risk of a thromboembolism. + Risk factors for<unk>  Factor Notes References Previous episodes of<unk>  Vasoconstriction Slow or turbulent blood flow slow flow is modifiable with exercise Stroke Heart failure Sedentary life style modifiable Plaster cast transient Dehydration modifiable Acute respiratory failure Dysrhythmias Shock Obesity modifiable Pregnancy and the post-partum period Varicose veins Surgery Trauma Estrogen-based oral contraceptive discontinuation reduces risk Hormone replacement therapy discontinuation reduces risk Ovarian hyper-stimulation therapy to treat infertility Compression of a vein or artery by abnormality, tumor, hematoma Long surgeries Pacing wires Local vein damage, incompetent valves Central venous catheters Dialysis catheters Repetitive motion injury Immobility modifiable risk Spinal cord injury Age Cancers Sepsis Polycythemia Protein C and/or S deficiency congenital; associated with Warfarin necrosis Antiphospholipid antibody syndrome altered coagulation Factor V Leiden defect altered coagulation Prothrombin G20210A defect altered coagulation Hyperhomocysteinemia altered coagulation Elevated factors II, VIII, IX, XI altered coagulation Antithrombin III deficiency altered coagulation Falls and hip fracture related to immobility Selective estrogen-receptor modulators Erythropoiesis-stimulating agents Acute medical illness Inflammatory bowel disease Nephrotic syndrome Myeloproliferative disorders Paroxysmal nocturnal hemoglobinnuria Thrombophilias Post-menopausal hormone replacement therapy discontinuation reduces risk Right heart failure Venous inflammation/phlebitis when a thrombus forms, it is thrombophlebitis Ambient air pollution thought to be related to inflammation
Thrombosis
Thrombus
Angiopathy
Sclerosis 
Calcification
Infarction
Adhesion 
Abscess