Haematology Flashcards
What is the most common inherited bleeding disorder?
Von Willebrand’s disease
Inheritance of Von Willebrand disease?
Type 1 (80%) is autosomal dominant
Type 3 is autosomal recessive
What does von Willebrand do?
Promotes platelet adhesion to damaged epithelium
Binds to factor VIII to prevent its clearance
Presentation of von Willebrand’s disease?
Mucosal bleeding - epistaxis, menorrhagia
Investigations for von Willebrand’s disease
Prolonged bleeding time
APTT may be prolonged
Factor VIII moderately reduced
Defective platelet aggregation with ristocetin
Management of von Willebrand’s disease
Tranexamic acid
Desmopressin
Factor VIII concentrate
How does desmopressin help in von Willebrand’s disease?
Increases levels of vWF by inducing vWF release from Weibel-Palade bodies in endothelial cells
Types of von Willebrand’s disease
Type 1: partial reduction in vWF
Type 2: abnormal form of vWF
Type 3: total lack of vWF
What should you consider if enlarged lymph nodes + itch?
Lymphoma
What is Hodgekin’s Lymphoma?
Malignant proliferation of lymphocytes characterised by presence of Reed Sternberg cells
In which condition do you see Reed Sternberg cells?
Hodgekin’s lymphoma
Risk factors for Hodgekin’s lymphoma
EBV
HIV
Immunosuppression
Smoking
Features of Hodgekin’s lymphoma
Lymphadenopathy - painless, tender, asymmetrical Fever, weight loss, night sweats Pruritis Alcohol induced lymph node pain Mediastinal mass
What should alcohol induced lymph node pain make you think of?
Hodgekin’s lymphoma
Hodgekin’s lymphoma - blood results findings and investigations
Normocytic anaemia, eosinophilia Raised LDH Raised ESR HIV testing LN biopsy CXR
Management of Hodgekin’s lymphoma
Chemo + radio
If relapse then high dose chemo + autologous stem cell transplant
Prognosis for Hodgekin’s lymphoma
80-90% achieve remission
What is the staging system for Hodgekin’s lymphoma called?
Ann Arbour
Name three direct oral anticoagulants
Dabigatran
Rivaroxaban
Apixaban
How does dabigatran work?
Direct thrombin inhibitor
How does rivaroxaban work?
Direct factor Xa inhibitor
How does apixaban work?
Direct factor Xa inhibitor
Reversal agent for dabigatran
Indarucizumab
Reversal agent for rivaroxaban and apixaban
Andexanet alfa