33. Non-regenerative anaemias Flashcards
Non regenerative anaemia
anaemias with a lack of regenerative response
Normal reticulocyte count
Dog: 60-80 x 10^9 cells/l
Cat: 15-42 x 10^9 cells/l
Reticulocyte count during blood loss
x3 higer
Reticulocyte count during hemolysis
x7 higer
Polychromasia
when there is an increase of intensely stained rbcs
How long does it take rbcs to mature
4 days
Causes of non regenerative anaemia
Drugs/ Toxins
Pathogens
BM Supression
Drugs causing non regenerative anaemia
chemo -
oestrogen
phenylbutazone
trimethoprim
phenobarbital
fenbendazole
Pathogens that cause non regenerative anaemia
parvovirus
rickettsia
ehrlicia canis
fiv
histoplasma
leishmania
cryptococcus
feline panleukopenia
non regenerative anaemia diseases
Pure red cell aplasia
Deficiency anaemias/ refractory anaemias
Anaemia of chronic disdease
Myelodysplastic syndromes
Acute lymphoblastic anaemia
Chronic lymphoblastic anaemia
Pure red cell aplasia
Immune mediated intravascular peracute haemolysis
NGIMHA
If it remains non regen for >5 days then the immune system targets erythroid precursor cells
Predisposed to Pure red cell aplasia
Young/ middle aged
Neutered females
Diagnosis of Pure red cell aplasia
Dysmyelopoesis
Haemorrhage
Fibrosis
Necrosis
Treatment of Pure red cell aplasia
Same as IMHA
Deficiency anaemias/ refractory anaemias
Anaemias not related to the bone marrow
types of Deficiency anaemias/ refractory anaemias
Iron deficiency anaemia
Vitamin B12 deficiency
Chronic kidney disease
Iron deficient anaemia
chronic blood loss
blood sucking parasites
chronic gi bleeding
chronic cystitis
Vitamin B12 deficiency
Chronic git disease –> IBD
EPI
hereditary receptor defect - ebagle
Chronic kidney diesease
eryhtropoietin loss
epo is porduced in the renal cortex
Anaemia of chronic disease
lack of hormones
inflammation
Lack of hormones
hypothyroidism
Addison’s
Inflammation (Anaemia of chronic disdease)
cytokine release –> increased hepcidin release –> decreased ferritin –> decreased Fe availablilty
Causes of inflammation
Chronic inflammatory disease (IBD)
Acute inflammatory disease (pyometra)
Chronic kidney disease
Neoplasia
Myelodysplastic syndromes
a group of cancers
Immature RBCs fail to mature
Clinical signs of Myelodysplastic syndromes
Weakness
Exercise intolerance
Fever
Haemorrhage
Lab D of Myelodysplastic syndromes
Non regen
Panleukopenia
thrombocytopenia
Diagnosis of Myelodysplastic syndromes
BM biopsy –> dyserythropoesis
increased myeloblasts
Acute lymphoblastic anaemia
proliferation of immature lymphoblasts
Predisposed to Acute lymphoblastic anaemia
middle/ old aged
Clinical signs of Acute lymphoblastic anaemia
Lethargy
Weight loss
intermittent fever
hepatosplenomegaly
abdo pain
Lab D of Acute lymphoblastic anaemia
anaemia
leukopenia
no lymphoblasts in peripheral blood
Diagnosis of Acute lymphoblastic anaemia
BM biopsy
Differential of Acute lymphoblastic anaemia
Lymphoma stage V
Chronic lymphoblastic anaemia
proliferation of mature lymphocytes
Predisposed to Chronic lymphoblastic anaemia
old >young
Clinical signs of Chronic lymphoblastic anaemia
Hepatosplenomegaly
intermittent lameness
mild lymphadenomegaly
fever
pu/pd
haemorrhages
Lab D of Chronic lymphoblastic anaemia
Normocytic normochromic non regenerative anaemia
Lymhphocytosis
Neutropenia
Treatment of Chronic lymphoblastic anaemia
prednisolone & chlorambucil
Treatment of non regenerative anaemia
Treat underlying cause
Blood transfusion - packed RBCs