Haematology Flashcards
What is alpha thalassaemia trait?
1/2 genes missing
What is the management of spherocytosis?
Splenectomy
What infection can be gained from RBC?
Pseudomonas
What is myelofibrosis?
Bone marrow is replaced with fibrous tissue
Where are the beta genes?
Chromosome 11 - one on each
What is the INR target for recurrent DVT/PE?
3-4
What is the presentation of ALL?
Fatigue
bleeding
Bruising
Infections
Splenomegaly
What is seen on the blood film in G6PD deficiency?
Heinz bodies
Which disease is the HFE gene a part of?
Haemachromatosis
What do schistocytes indicate?
Intravascular haemolysis
How can autoimmune haemolytic anaemias be typified?
Warm and cold
What is a sickle cell crisis?
Episodes of tissue infarction due to vascular occlusion
What is associated with warm AI haemolytic anaemia?
SLE Lymphoma Leukaemias Mefenamic acid
What is seen on blood film in CLL?
‘Smear cells’, lots of small mature lymphocytes
Which age group commonly gets CML?
40-60 year olds
What is this cell?
Eosinophil
What is the treatment of a painful sickle cell crisis?
Opiate analgesia Hydration Rest oxygen ?transfusion?
What is this?
Howell-Jolly body
What is the INR target for AF?
2-3
What is priapism associated with?
Sickle cell anaemia
What is polycythaemia rubra vera?
Increase in RBCs
What special type of cells are seen in Hodgkins lymphoma and what do they look like?
Reed-Sternberg cells ‘owl’s eye’
What is the management of essential thrombocytopenia?
Aspirin Hydroxycarbamide Interferon alpha
What is seen on the blood film in myelofibrosis?
Tear drop RBC, leucoerythroblastic change - nucleated RB + myelocytes
What features are common to MPD?
Increased cell turnover - gout, fatigue, weight loss, sweats Splenomegaly - abdo pain, can’t eat as much Marrow failure Thrombosis
What is the INR for a mechanical aortic valve?
2.5-3.5
What happens if HbS is exposed to hypoxia for a prolonged period?
It polymerises and sickles
How do you manage INR > 5 with minor bleeding?
Stop warfarin, start when INR <5 IV Vit K 1-3mg
What is hydrops fetalis?
No alphae genes
How do you manage a high INR with major bleeding?
Stop warfarin IV vit K 5mg FFP
What are the features of cold AI haemolytic anaemia?
Symptoms worse in cold Raynaud’s Acrocyanosis
What is the best type of Hodgkins?
Lymphocyte rich
How long is warfarin given in an unprovoked DVT/PE?
6m
What is amyloidosis?
Extracellular deposition of an insoluble fibrillar protein: amyloid –> tissue/organ dysfunction
Which patients does essential thrombocytopenia most commonly affect?
Those over 50
What is a febrile non-haemolytic transfusion reaction?
Rapid temp rise, chills, rigors
What is the most common adult leukaemia?
AML
How does clopidogrel work?
Irreversibly blocks effects of ADP on platelets
What is the mode of action of heparin?
Inactivation of thrombin through potentiating antithrombin III, factor Xa is also inhibited
What does IgM paraprotein indicate?
Waldenstrom’s macroglobulinaemia
Which disease are auer rods present in?
AML
What is this cell?
Neutrophil
What is rituximab?
Monoclonal antibody against CD20 +ve B cells
Which people does hodgkins commonly affect?
Those in the 3rd and 4th decades of life
What is pernicious anaemia?
Autoimmune condition resulting in the destruction of gastric parietal cells leading to B12 deficiency
What is essential thrombocytopenia?
Uncontrolled proliferation of abnormal platelets
What does a pepper pot skull indicate?
Myeloma
How does aspirin work?
Inhibits platelet TXA2 synthesis
What is HbH disease?
1 alpha gene left
How is LMWH monitored?
Anti-Xa
What are the investigation findings in spherocytosis?
Spherocytes on blood film Increased osmotic fragility
How long is warfarin given in a provoked DVT/PE?
3 months
What is HbA2 made up of?
2 alpha and 2 delta chains
What is hereditary spherocytosis?
Autosomal dominant condition resulting in a problem with the RBC membrane leading to extravascular haemolysis
What is the mode of action of warfarin?
Effectively causes an inactive from of factors VII, IX, X and prothrombin to be made - unable to form catalytic complexes
What is this cell?
Lymphocyte
What positive effects does aspirin have on patients?
Decreases MI risk in patients with angina Decreases stroke risk in patients who’ve had a TIA
How is G6PD transmitted?
X-linked disorder
What is the management of pernicious anaemia?
Lifelong B12 injections
What is the anaemia in alpha thalassaemia trait?
Microcytic hypo chromic mild anaemia
What is the INR target for DVT prophylaxis/treatment?
2-3
What are the features of HbH?
Splenomegaly +/- jaundice