Haem Flashcards
27F. Menorrhagia, anaemia.
What kind of anaemia does she have, and what is the treatment?
Iron deficiency anaemia.
Ferrous sulphate
19M, university student. Presents to A&E with headache and breathlessness. Family lives in Nigeria.
Investigations show severe anaemia, reticulocytosis, bite cells.
Recent prescription of nitrofurantoin for a UTI.
Most likely cause of symptoms?
Oxidative crisis due to G6PD deficiency
GS investigation for DVT
Doppler US
Which of these is not a cause of thrombocytopenia?
A. Chronickidneydisease
B. HIV
C. Excessive alcohol consumption
D. Myeloma
E. Heparin
Heparin
A 3 year-old is a patient on the oncology ward following severe anaemia, recurrent infection, and pain in her bones. Most likely diagnosis?
ALL
What is the diagnostic test for sickle cell anaemia?
Hb electrophoresis
Most appropriate treatment for CML?
Imatinib (tyrosine kinase inhibitor)
What is the pathophysiology of hereditary spherocytosis?
It is caused by defects in the red cell membrane, resulting in them having an increased permeability to sodium
What is the infective stage of the malaria parasite?
Sporozite
What are you most likely to see on a blood smear in suspected ALL?
Blast cells
What malignancy is Philadelphia Chromosome associated with?
CML
Explain the mechanism of action of Imatinib
Tyrosine kinase inhibitor
A 74 year old gentleman is investigated for multiple myeloma following a fragility fracture he sustained at home.
Which of these findings on a series of blood tests would NOT be suggestive of myeloma?
A. Anaemia
B. Hypocalcemia
C. Raised Creatinine
D. Raised Urea
E. Monoclonal proteins in Serum
Hypocalcaemia
HypER rather than hypOcalcemia is seen in myeloma
What would you expect to see on a blood film for a patient with multiple myeloma?
Rouleaux formation. RBCs look like a stack of coins
DVT.
What is the duration of treatment with Apixaban?
6 months
68M. Thirst, constipation, confusion. Osteoarthritis had returned, severe back pain in the thoracic region. FBC shows anaemia.
Most likely diagnosis?
Multiple myeloma
Haemophilia A is inherited in a X linked recessive pattern. In this case, the Father has the disease and the mother is a carrier.
What is the chance of their daughter also having the disease?
50%
X* X
X* XX X*X
Y X*Y XY
48M. Alcoholic.
What type of anaemia would be seen on FBC?
Chronic alcoholism anaemia causes Macrocytic anaemia
68F. Lower back pain, numbness and weakness in fingers.
Weight loss (unintentional), hypercalcaemia, anaemia.
What is the most likely diagnosis and which gene is associated with it?
Multiple Myeloma.
MGUS
You suspect a haematological disorder, so perform a blood film. It shows blast cells with Auer rods.
What is your diagnosis?
AML
What protein is deficient in Haemophilia A?
Factor VIII
5month old baby, south-east Asian origin.
Weak, swollen abdo, dark urine. Small size, facial deformities.
Blood smear: microcytic, hypochromic anaemia, with target cells.
Low Hb, high iron.
Most likely diagnosis and the result of Hb electrophoresis that would confirm it?
Thallasemia
Decreased HbA, increased HbA2, present HbF
List 4 causes of microcytic anaemia
- iron deficiency
- β thalassaemia
- anaemia of chronic disease
- lead poisoning
List 4 causes of macrocytic anaemia
- B12 deficiency
- folate deficiency
- alcohol access
- myelodysplastic neoplasm
- hypothyroidism
- pregnancy
- methotrexate
- reticulocytosis
List 4 causes of normocytic anaemia
- anaemia of chronic disease
- CKD
- anaemia of traumatic blood loss
- combined (iron and B12 deficiencies for example)
- inflammatory disease
Describe the mechanism of absorption of vitamins B12
B12 binds to intrinsic factor, which is produced by parietal cells in the stomach. It is then actively absorbed in the terminal ileum
List 3 causes of B12 deficiency. Which is most common?
Most common = pernicious anaemia
- vegan / poor diet
- disorder of the terminal ileum e.g. Crohn’s, ileocaecal resection
What is the treatment of B12 deficiency anaemia ?
- B12 replacement
- IM hydroxocobalamin
What is the management for hereditary spherocytosis?
Splenectomy
What finding on blood film would confirm a diagnosis of multiple myeloma?
Rouleaux formation
The most severe form of the disease malaria with the highest rate of mortality in humans is caused by which species of mosquito?
Plasmodium falciparum
List 3 protective factors for malaria
- sickle cell trait
- G6PD deficiency
- HLA-B53
What does complicated malaria entail?
Vascular occlusion
Can cause raised ICP, seizure, coma
Ann Arbor Classification:
Describe class Ia
One nodal area, no systemic symptoms
Ann Arbor Classification:
Describe class IIa
Two or more nodal areas on the same side of the diaphragm
No systemic symptoms
Ann Arbor Classification:
Describe class IIb
Two or more nodal areas on the same side of the diaphragm
Systemic symtoms
Ann Arbor Classification:
Describe class IIIa
Nodal areas on both sides of the diaphragm
No systemic symptoms
Ann Arbor Classification:
Describe class IIIb
Nodes on both sides of the diaphragm
Systemic symptoms
Describe the Pathophysiology of Hereditary Spherocytosis
- autosomal dominant defect of the red blood cell cytoskeleton
- increased permeability to Na+ (therefore more water drawn in)
- normal biconcave disc shape replaced by sphere shape
- unable to pass through spleen without being destroyed
How is hereditary spherocytosis diagnosed?
Mostly family history and clinical picture.
BLood film will show spherocytes
Describe the Pathophysiology of thrombotic thrombocytopenic purpura
ADAMTS13 deficiency causes Von Willebrand’s factor to form thromboses
The body breaks these down, causing haemolytic anaemia and raised bilirubin
Describe the pathology and give two causes of relative polycythaemia
Fluid loss causing highly concentrated blood
- dehydration
- stress
Describe the pathology of secondary polycythaemia and give two examples of causes
Chronic hypoxia stimulated erythropoietin production in the kidney
- high altitude
- COPD
Describe the pathology of polycythaemia rubra Vera
Primary polycythaemia
JAK2 mutation -> bone marrow stem cell proliferation -> overproduction of RBCs, neutrophils, platelets -> increased clotting risk
What is Virchow’s triad?
Risk of DVT / PE
- stasis of blood flow
- hypercoagubility
- endothelial injury
What is the difference between ITP in children and adults?
- children = acute (primary)
- adults = chronic (secondary)
Name 3 signs / symtoms of immune thrombocytopenia
- easy bruising
- epistaxis
- menorrhagia
- purpura
- gum bleeding
How is ITP diagnosed?
FBC: isolated thrombocytopenia
What is the first line management of ITP?
Corticosteroids (Prednisolone)
IV IgG
Which causative organisms of malaria can cause relapses?
Plasmodium vivas
Plasmodium ovale
What signs would you expect to see in a patient when diagnosing malaria?
- fever, often >39
- sweats / chills
- headache
- myalgia
- fatigue
- diarrhoea
- vomiting
- abdominal discomfort
Name 3 signs you might see on examination of a patients’ face, skin, and nails that are associated with iron deficiency anaemia
- brittle nails
- koilonychia
- subconjuctival pallor
- pallor
- atrophic glossitis
- angular stomatitis
List the diagnostic criteria of multiple myeloma
- osteolytic lesions on imagine
- elevated plasma cells in bone marrow
- monoclonal protein in serum or urine