Questions and Answers
What occurs in the vascular phase of normal control of bleeding?
Vasoconstriction occurs in the area of injury and begins immediately after injury
What is a potential risk for patients who receive blood thinners to prevent recurrent thrombosis?
Excessive bleeding
What is the primary function of platelets in the platelet phase of normal control of bleeding?
Mechanical plug of platelets seals off openings of cut vessels
What increases the risk for bleeding and bleeding complications?
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What is the coagulation phase of normal control of bleeding characterized by?
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Study Notes
Normal Control of Bleeding
- Vascular phase: Blood vessels constrict to reduce blood flow to the injured area, reducing bleeding.
- Platelet phase: Platelets aggregate at the injury site, forming a platelet plug that temporarily stops bleeding.
Blood Thinner Risks
- Patients who receive blood thinners to prevent recurrent thrombosis are at increased risk of bleeding and bleeding complications.
Platelet Function
- Primary function of platelets: Forming a platelet plug that temporarily stops bleeding.
Bleeding Risks
- Factors that increase the risk of bleeding and bleeding complications: Use of blood thinners, impaired platelet function, and vascular damage.
Coagulation Phase
- Coagulation phase of normal control of bleeding: Characterized by the formation of a fibrin clot that solidifies the platelet plug, permanently stopping bleeding.
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