factor viii assay…

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what the risks are plasma factor viii antigen, factor viii assay, blood test to measure the activity of factor viii, the proteins important, coagulation, blood is drawn, a vein, on the inside, the elbow, the hand, puncture site is cleaned, antiseptic, an elastic band, around the upper arm to apply pressure, restrict blood flow, the vein, veins below the band to swell, blood, a needle is inserted, vein, blood is collected in an air-tight vial, a syringe, band is removed, restore circulation, once the blood has been collected, needle is removed, puncture site is covered to stop any bleeding, an infant, young child, area is cleansed, antiseptic, punctured, a sharp needle, a lancet, blood collected, pipette, small glass tube, on a slide, onto a test strip, into a small container, cotton, a bandage applied, puncture site, any continued bleeding, no special preparation is necessary, the needle is inserted to draw blood, feel moderate pain, others feel only a prick, stinging sensation, some throbbing, plasma factor viii, measured to diagnose, monitor treatment, hemophilia, detect the specific cause of, excessive bleeding, decreased blood clotting, a result between 50%, 200%, the laboratory reference value, considered normal, decreased levels, hemophilia a, disseminated intravascular coagulation, a state, the clotting factors, used up, due to diffuse coagulation, the blood, presence of a factor viii inhibitor, antibody, additional conditions under which the test performed, von willebrand's disease, excessive bleeding, fainting, feeling lightheaded, hematoma, blood accumulating under the skin, infection, a slight risk, the skin is broken, multiple punctures to locate veins, often performed on people, bleeding problems, risk of, excessive bleeding is slightly greater, bleeding problems than, bleeding problems, coagulation, blood clotting, a sequence of reactions involving several proteins known, coagulation factors, of these factors have other names, factor i, fibrinogen, factor ii is prothrombin, factor xii is hageman factor, liver produces these proteins, secretes them, blood, vitamin k is important to blood clotting, body converts it into prothrombin, take warfarin to keep blood from clotting, warfarin inhibits prothrombin, interrupting the clotting cascade, the link between vitamin k, prothrombin, people who take warfarin need to have consistent levels of vitamin k in diet, coagulation begins, the coagulation factors contact damaged tissue, each factor reaction triggers the next reaction, cascade, final product, the coagulation cascade, blood clot, substances that inhibit, "turn off" the action, the coagulation factors, activated, the coagulation factors, substances function more slowly, over a longer period of time, than the coagulation factors, allows a clot to form, stopping the bleeding, after enough time has passed, the tissue to heal, clot is dissolved, blood flow restored, most important coagulation inhibitor is antithrombin iii, veins, arteries vary in size, obtaining a blood sample.