Anaemia Flashcards
What is anaemia?
- Reduction in the amount of haemoglobin in a given volume of blood below what would be expected in comparison with a healthy subject of the same age and gender
- Hb is reduced
- RBC and Hct/PCV are usually also reduced
NOTE: occasionally it results from an increase in the volume of plasma rather than a decrease in the amount of haemoglobin
In a healthy person, anaemia resulting from an increase in plasma volume cannot persist because…?
The excess fluid in the circulation is excreted
For practical purposes, anaemia can therefore be regarded as resulting from a decrease of the absolute amount of haemoglobin in the circulation
What are the mechanisms of anaemia?
Slide 6
What are the classifications of anaemia (based on cell lsize)?
Slide 10
What are the common causes of microcytic anaemia?
Slide 11
Macrocytic anaemias usually result from…?
Slide 12
Slide 16
Whta is megaloblastic erythropoiesis?
Slide 13
What is a megaloblast?
Slide 14
What are the common causes of macrocytic anaemia?
Slide 17, 18
What are the mechanisms of normocytic normochromic anaemia?
Slide 19
What are the causes of normochromic anaemia?
Slide 20
What is haemolytic anaemia?
Slide 21
Haemolytic anaemia can also be classified as…?
Inherited or acquired
Intravascular or extravascular
Inherited haemolytic anaemia can result from…?
Slide 22
Acquired haemolytic anaemia usually results from…?
Slide 22
Extrinsic factors can interact with red cells that have an intrinsic abnormality
CLOZE
….
Intravascular haemolysis occurs if there is…?
Slide 23
Extravascular haemolysis occurs when…?|
Slide 23
Often haemolysis is partly intravascular and partly extravascular
CLOZE
…..
What are the differences between inherited and acquired haemolytic anaemia?
Slide 26
When should you expect haemolyticanaemia?
Slide 28
Give examples of inherited haemolytic anaemia
Slide 33
Give some examples of acquired haemolytic anaemia
Slide 34
What is hereditary spherocytosis?
Slide 35-38
How is hereditary spherocytosis treated?
Slide 39
What is glucose-6-phosphate dehydrogenase (G6PD) deficinecy?
Slide 40-50
Autoimmune haemolytic anaemia results from…?
Slide 51-54
How is autoimmune haemolytic anaemia diagnosed?
Slide 55
How is autoimmune haemolytic anaemia treated?
Slide 56
How is microangiopathic haemolytic anaemia treated?
Slide 57
A microcytic anaemia is likely to be due to…?
Slide 58 SBA
…..
Polycythaemia in a patient seeing his general practictionerin london because he has noticed his urine is red is most likely to be due to…?
Slide 59 SBA
…..