11. Disorders Of Secondary Hemostasis | USMLE Step 1 Pathology

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Disorders of Secondary Hemostasis: USMLE Step 1 Pathology
Disorders of secondary hemostasis involve abnormalities in the coagulation cascade, leading to impaired formation or stabilization of the fibrin clot. These disorders can result from inherited or acquired conditions affecting the synthesis or function of clotting factors, including factors I (fibrinogen), II (prothrombin), V, VII, VIII, IX, X, XI, and XII. 💉 Hemophilia A and B are the most common inherited disorders of secondary hemostasis, characterized by deficiencies in factors VIII and IX, respectively, leading to prolonged bleeding and easy bruising. Other inherited disorders include von Willebrand disease (vWD) type 2N, where there is a defect in von Willebrand factor binding to factor VIII, resulting in decreased factor VIII activity. Acquired disorders of secondary hemostasis can occur due to liver disease, vitamin K deficiency, or anticoagulant medications, leading to reduced synthesis or function of clotting factors. Clinical manifestations include mucosal and deep tissue bleeding, hemarthrosis, and excessive bleeding after trauma or surgery. Diagnosis involves laboratory tests such as prothrombin time (PT), activated partial thromboplastin time (aPTT), and specific assays for individual clotting factors. Treatment strategies vary depending on the underlying cause and may include replacement therapy with clotting factor concentrates, vitamin K supplementation, or reversal of anticoagulant medications. Understanding the pathophysiology, clinical features, and management of disorders of secondary hemostasis is essential for medical students preparing for the USMLE Step 1 exam.
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[@hsamkhn]

Clearly explanation and remove all the doubts
Thanks ❤

[@hsamkhn]

❤

[@aritrachakraborty1082]

Sir notes?