TRASTORNOS DE LA HEMOSTASIA PRIMARIA Y SECUNDARIA: CÓMO DIFERENCIARLOS EN LA CLÍNICA VILLAMEDIC 2026

Hemostasis disorders are a major cause of bleeding in patients of all ages, and recognizing whether the problem lies in primary or secondary hemostasis completely changes the diagnostic and therapeutic approach. In this video, we provide a practical overview of how to identify their manifestations, most frequent causes, and key laboratory tests to guide the diagnosis. We begin by explaining that primary hemostasis corresponds to the formation of the initial platelet plug, while secondary hemostasis culminates in the generation of fibrin to stabilize the clot. When primary hemostasis fails, petechiae, purpura, epistaxis, gingival bleeding, and menorrhagia are typical findings; when secondary hemostasis fails, deep hematomas, hemarthrosis, muscle bleeding, and delayed hemorrhages following procedures or trauma are more common. We also review the main causes: in primary hemostasis, thrombocytopenia, platelet dysfunction, and von Willebrand disease are prominent; In secondary hemostasis, hemophilia, coagulation factor deficiencies, vitamin K deficiency, liver disease, and acquired inhibitors are prominent. We also discuss how prothrombin time and aPTT help determine whether the defect lies in the extrinsic, intrinsic, or common pathway of coagulation. Finally, we review the practical diagnostic approach, from the clinical history and bleeding pattern to the complete blood count, coagulation tests, and specific studies based on the suspected diagnosis. This approach allows for the easy differentiation of platelet disorders from coagulation defects and helps determine when the patient requires urgent evaluation or specialized testing. #hemostasis #primaryhemostasis #secondaryhemostasis #coagulation #platelets #hemophilia #vondewillebrand #thrombocytopenia #hematology #medicine #internalmedicine #diagnosis #bleeding #laboratory #medicaleducation