Paediatric anaemias Flashcards
why are the red cells small in iron deficiency anaemia
cells keep dividing until they have enough Hb, but there is not enough Hb so keep dividing getting smaller and smaller
iron deficiency anaemia treatment
- change diet if needed
- sodium feredetate 2.5mls tds
why are red cells small in beta thalassaemia major
can’t make Hb as fast, so cells dividing because the Hb isn’t there in high enough quantities to stop the division
beta thalassaemia major treatment
blood transfusion on a regular basis to maintain a minimum Hb
why are we doing blood transfusions regularly for beta thalassaemia major
we want to maintain high Hb so that the body isn’t driven to increased erythropoiesis
strong drive for erythropoiesis in these kids which leads to - bone stuff. splenomegaly.
basically all that energy going into erythropoiesis isn’t going into growing.
complications of longterm blood transfusion
iron overload - accumulation in:
- cardiac
- liver
- endocrine
infection - blood borne like HIV, hepatitis, malaria, bacterial infections
what does the spleen do to red cells
takes out the done red cells
why is parvovirus a problem with anaemia in kids
switches off erythropoiesis for a couple of weeks so get profoundly anaemic for a couple of weeks.
how does splenectomy help improve Hb concentration
extends red cell survival
what helps decide if a splenectomy is required
severity of anaemia
enlarged spleen
severe jaundice
if keep getting infections
not hitting growth milestones
what age should a patient be before they are offered splenectomy
6 - because of immune function of spleen. more at risk of sepsis when young