Haematology Flashcards
cause of haemolytic anaemia that can be triggered by broad beans, henna, illness and drugs
G6PD
what causes bite and blister cells on blood film
G6PD
haemosiderin urine (very dark) suggests intra or extravascular cause of haemolytic anaemia
intravascular
Reed sternberg cells in what
Hodgkin’s lymphoma
Which lymphoma is mostly curable, which is lower grade but not normally curable
Hodgkins mostly curable
NH med survival 10y but not normally curable in advanced stages
Which type of lymphoma presents with a solitary enlarged lymph node
hodgkins
Which type of lymphoma presents with alcohol induced pain
hodgkins
which lymphoma is more common
non hodgkin
What type of lymphoma presents with painless, slowly progressive peripheral lymphadenoapthy
Low grade non hodgkins
What blood test helps prognosticate in hodgkins lymphoma
ESR
What type of lymphoma presents with rapidly growing bulky lymphadenoma
high grade non hodgkins
What type of lymphoma presents with abdominal mass
Burkitt’s lymphoma
what happens to ferritin in pregnancy
falls in the last 2/3 irrespective of iron stores
when to recheck fbc after rx oral iron
2-4 weeks
Action if IDA not responded to oral iron
refer to haem
How long to continue iron supplement and monitoring
3 months after normal FBC
Then bloods 3 monthly for a year
what is pernicious anaemia
autoimmune
affects gastric mucosa
leads to B12 deficiency
severe b12/folate defic can lead to
pancytopenia
SACDC
If you don’t know the B12 AND folate status, giving folate in isolation can do what?
worsen b12 deficiency
pernicious anaemia rx
B12 monthly for life
what is coombs test for
autoimmune haemolytic anaemia
acute medical treatment of ABO incompatibility
hydrocort IV
chlorphenamine IV
when after transfusion can you test FBC
6-12h
In which transfusion reactions do you stop the transfusion
TRALI
Anaphylaxis
Haemolytic (ABO) reaction
What is post transfusion purpura
plt destruction 5-12 days later- potentially fatal
Myeloma is a malignancy of which cells in the BM
plasma
Features of myeloma
CRAB
hypercalcaemia
Renal failure
Anaemia
Bone (lytic lesions)
what antibodies are produced in myeloma
paraproteins- light chains
IgA and IgG
skull XR finding myeloma
rain drop skull
1st line imaging in suspected myeloma
whole body MRI for bone lesions
Treatment of myeloma
symptomatic
Chemo and RT of bone where neoplastic plasma cells are
Stem cell transplant
abdominal and neuropsych sx in 20-40 yo female
acute intermittent porphyria
acute intermittent porphyria genetics
autosomal dominant
Urine turns deep red on standing
acute intermittent porphyria
most common type of acute lymphoblastic leukaemia
b cell
most common childhood malignancy
ALL
G6pd inheritance
x linked
drugs that precipitate g6pd
anti-malarials: primaquine
ciprofloxacin
sulph- group drugs: sulphonamides, sulphasalazine, sulfonylureas
Amyloid AA is due to
chronic long term inflammatory conditions eg crohns
Amyloid AL type is due to
myeloma, NH lymphoma, waldenstrom
Amyloid ATTR type is due to what
genetic, autosomal dominant
How is amyloid diagnosed
biopsy (traditionally rectal)
Do you give oral iron in beta thalassaemia
only if ferritin low
CLL is more likely in which patient group
HIV/AIDS
Philadelphia chromosome linked with what
CML
CML rx
tyrosine kinase inhibs (imatinib)
Haemophilia A clotting factor
VIII
Haemophilia B clotting factor
IX
Haemophilia C clotting factor
XI
coag findings in haemophilia
prolonged APTT
normal PT
Hereditary spherocytosis rx
folate supplements
splenectomy if severe
ITP rx
pred
occasionally IV Igs
2nd line splenectomy
TTP enzyme
ADAMST13
coag screen in TTP
usually normal as opposed to DIC which presents similarly
TTP rx
plasma exchange
myelodysplastic syndrome can progress to what
AML
What presents with massive splenomegaly
myelofibrosis
chronic myeloid leukaemia
Malaria
what can myelofibrosis progress to
AML
Sickle cell prophylaxis of acute events
hydroxyurea
commonest inherited coag disorder
von willebrand
von willebrand fbc and coag might show
quite normal
VW treatment
desmopressin
prophylactic TXA prior to surgery
Waldenstroms macroglobulinaemia is related to what molecule
IgM paraprotein
2 features of Waldenstroms
reynauds
hyperviscosity features eg visual loss
heinz bodies are seen in
G6PD
Rouleaux formation
myeloma
Howell-Jolly bodies
hyposplenic or asplenic disorders such as post splenectomy or megalobastic anaemia
Schistocytes
metallic heart valves or haemolytic anaemia.
Raised haemoglobin, plethoric appearance, aquagenic pruritus, splenomegaly, hypertension →
polycythaemia vera
Polycythaemia vera mutation
JAK2 mutation
Heparin prolongs
APTT
warfarin prolongs
PT
increase in granulocytes at different stages of maturation on blood film
CML
What are the few cells that have lymphoid lineage
NK cells
Lymphocytes
Plasma cells
sickle cell inheritance
autosomal recessive
first line in polycythaemia vera
venesection
History of DVT and
painful, heavy calves
pruritus
swelling
varicose veins
venous ulceration
Post thrombotic syndrome
Most common inherited thrombophilia
Factor V leiden
microcytosis disproportionate to the anaemia suggets
beta thalassaemia trait
what happens to transferrin saturation in IDA
low
what type of transfusion has highest risk of bacterial contamination compared to other types of blood products
platelet
Length of treatment in VTE
provoked (e.g. recent surgery): 3 months
unprovoked: 6 month
Treatment of choice for cancer patients with VTE
DOAC
DOAC reversal agents
Rivaroxaban and apixaban- Andexanet
Dabigatran - Idarucizumab
Edoxaban - nil