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BLEEDING:
1. Introduction:
Bleeding refers to the escape of blood from blood vessels.
It can be external (visible) or internal (hidden).
Imbalance between coagulation and anticoagulation
mechanisms can lead to bleeding disorders.
2. Causes of Bleeding:
Hemostasis: The physiological process that prevents excessive
bleeding by maintaining the integrity of blood vessels.
Platelet Disorders: Thrombocytopenia (low platelet count),
impaired platelet function, and von Willebrand disease.
Coagulation Disorders: Hemophilia (deficiency in clotting
factors), liver disease (impaired clotting factor synthesis), and
vitamin K deficiency (affects clotting factor production).
Vascular Disorders: Disorders affecting blood vessel integrity,
such as Ehlers-Danlos syndrome and hereditary hemorrhagic
telangiectasia.
Medications: Anticoagulants (warfarin, heparin), antiplatelet
drugs (aspirin, clopidogrel).
Liver Dysfunction: Cirrhosis can lead to reduced production of
clotting factors.
3. Clinical Presentation:
Petechiae, ecchymoses, hematomas, and spontaneous mucosal
bleeding.
Excessive bleeding after minor trauma or invasive procedures.
Hemarthrosis (bleeding into joints) in hemophilia.
4. Diagnosis:
Complete blood count (CBC) to assess platelet count and other
blood cell levels.
Coagulation tests: Prothrombin time (PT), activated partial
thromboplastin time (aPTT), and international normalized ratio
(INR).
Bleeding time assessment.
NOTES BY DOC JKH
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Specific tests for coagulation factor deficiencies.
5. Management:
Address underlying cause if possible (e.g., treat vitamin K
deficiency, manage liver disease).
Transfusion of platelets, clotting factors, or fresh frozen plasma
in severe cases.
Avoidance of medications that promote bleeding.
Surgical interventions to control bleeding if necessary.
Bleeding Management: as per disorder
1. Platelet Disorders:
Thrombocytopenia: Platelet count <50,000/microliter.
Platelet transfusion: Typically given if bleeding risk is high
or platelet count is very low.
Impaired Platelet Function:
Desmopressin (DDAVP): Stimulates release of von
Willebrand factor.
Platelet transfusion: If bleeding is severe and there's
impaired platelet function.
von Willebrand Disease:
Desmopressin (DDAVP): Can increase von Willebrand
factor levels in some subtypes.
Replacement therapy with von Willebrand factor
concentrate.
2. Coagulation Disorders:
Hemophilia A (Factor VIII Deficiency) and Hemophilia B (Factor
IX Deficiency):
Replacement therapy with specific factor concentrates.
Prophylactic therapy to prevent bleeding in severe cases.
Vitamin K Deficiency:
Vitamin K supplementation: Oral or IV, depending on
severity.
Liver Disease:
Vitamin K supplementation.
NOTES BY DOC JKH
BLEEDING:
1. Introduction:
Bleeding refers to the escape of blood from blood vessels.
It can be external (visible) or internal (hidden).
Imbalance between coagulation and anticoagulation
mechanisms can lead to bleeding disorders.
2. Causes of Bleeding:
Hemostasis: The physiological process that prevents excessive
bleeding by maintaining the integrity of blood vessels.
Platelet Disorders: Thrombocytopenia (low platelet count),
impaired platelet function, and von Willebrand disease.
Coagulation Disorders: Hemophilia (deficiency in clotting
factors), liver disease (impaired clotting factor synthesis), and
vitamin K deficiency (affects clotting factor production).
Vascular Disorders: Disorders affecting blood vessel integrity,
such as Ehlers-Danlos syndrome and hereditary hemorrhagic
telangiectasia.
Medications: Anticoagulants (warfarin, heparin), antiplatelet
drugs (aspirin, clopidogrel).
Liver Dysfunction: Cirrhosis can lead to reduced production of
clotting factors.
3. Clinical Presentation:
Petechiae, ecchymoses, hematomas, and spontaneous mucosal
bleeding.
Excessive bleeding after minor trauma or invasive procedures.
Hemarthrosis (bleeding into joints) in hemophilia.
4. Diagnosis:
Complete blood count (CBC) to assess platelet count and other
blood cell levels.
Coagulation tests: Prothrombin time (PT), activated partial
thromboplastin time (aPTT), and international normalized ratio
(INR).
Bleeding time assessment.
NOTES BY DOC JKH
, Page |2
Specific tests for coagulation factor deficiencies.
5. Management:
Address underlying cause if possible (e.g., treat vitamin K
deficiency, manage liver disease).
Transfusion of platelets, clotting factors, or fresh frozen plasma
in severe cases.
Avoidance of medications that promote bleeding.
Surgical interventions to control bleeding if necessary.
Bleeding Management: as per disorder
1. Platelet Disorders:
Thrombocytopenia: Platelet count <50,000/microliter.
Platelet transfusion: Typically given if bleeding risk is high
or platelet count is very low.
Impaired Platelet Function:
Desmopressin (DDAVP): Stimulates release of von
Willebrand factor.
Platelet transfusion: If bleeding is severe and there's
impaired platelet function.
von Willebrand Disease:
Desmopressin (DDAVP): Can increase von Willebrand
factor levels in some subtypes.
Replacement therapy with von Willebrand factor
concentrate.
2. Coagulation Disorders:
Hemophilia A (Factor VIII Deficiency) and Hemophilia B (Factor
IX Deficiency):
Replacement therapy with specific factor concentrates.
Prophylactic therapy to prevent bleeding in severe cases.
Vitamin K Deficiency:
Vitamin K supplementation: Oral or IV, depending on
severity.
Liver Disease:
Vitamin K supplementation.
NOTES BY DOC JKH
