Anaemia Colloqium Flashcards
iron deficiency anaemia get what pathophysiological process?
Blood Loss
Decreased production
what test is under used in iron deficiency anaemia?
reticulocyte count
most common cause of worldwide iron deficiency?
hookworms
anaemia of chronic disease eg?
chronic renal failure
rheumatological disorders
malignancy
who gets folate deficiency? how long does folate stores last?
tea and toast diet, little old lady
3 months
how to look for folate levels over past 3 months?
red cell folate levels
leukoerythroblastic means?
bone marrow infiltrate is pushing out the precursor cells from the marrow
causes of microcytic anaemia?
iron
thal
sideroblastic
lead poisoning
what are pencil cells?
feature of iron deficiency
what makes haem molecule?
porphyrin + Iron
Globin production problems are what conditions?
thalassemia
irons studies get 4 values
ferritin
serum iron:useless by itself
transferrin
transferrin saturation
ferritin is positive or negative acute phase reactant
positive
could misleadingly normal in someone who is low iron but has an inflammatory reaction
immune haemolysis, is urine dark?
nope
blood film look for what if haemolysis?
fragments+ schistocytes = microangiopathy
bite/blister cells = oxidative injury
spherocytosis
when blood film shows sphertocytosis, what 2 dx?
hereditary spherocytosis
warm autoimmune haemolytic anaemia (+ve coombs, bound RBC auto-Abs)
5 things you look for microangiopathic haemolytic anaemia
abnormal blood film raised LDH raised reticulocytes raised unconjugated bilirubin depressed haptoglobin
platelet levels being high in anaemia could mean?
acute phase reactant
not really helpful
normocytic anaemias could be?
acute blood loss
chronic disease
iron deficiency anaemia iron studies look for?
ferritin is down
transferrin up
saturation down
what values increase first when treating iron deficiency?
reticulocytes,
Hb
MCV
ferritin
how is the RDW in iron deficiency vs. thal minor?
Iron deficiency - RDW is increased (more rage of RBC sizes - anisocytosis)
Thal. Minor - normal RDW