Hematology/Oncology Flashcards
folate deficiency path
leafy greans 3-6 wk stores pregnancy
folate deficiency pt
tea + toast diet EtOH pregnancy
folate deficiency dx
folic acid levels decreased normal methylmalonic acid increase homocysteine (not done)
folate deficiency tx
folate, 1mg po
B12 deficiency path
3-10 yrs storage animal products neuro symptoms
B12 deficiency pt
strict vegan pernicious anemia Crohn’s disease gastric bypass
B12 deficiency dx
B12 levels decreased increase homocysteine (don’t check) increase methylmalonic acid
B12 deficiency tx
B12 - PO = nutritional - IM = impaired absorption
B12 deficiency f/u
never choose Schilling test prolonged deficiency is loss of DCMLS (proprioception, Vibration)
pernicious anemia path
antibodies against parietal cells no intrinsic factor, no B12 absorption
pernicious anemia pt
weakness, sore tongue, paresthesias
pernicious anemia dx
Ab-intrinsic factor Ab-Anti-parietal
pernicious anemia tx
IM B12 cannot treat pernicious anemia
pernicious anemia f/u
gastric cancer
non-megaloblastic anemias
liver disease EtOH medications (AZT, HAART, 5-FU, ARA-C) Metabolic syndrome - Lesch-Nyhan - Hereditary orotic aciduria
iron deficiency anemia path
slow bleed consumption of iron stores
iron deficiency anemia pt
woman = menorrhagia man = colon cancer
iron deficiency anemia dx
iron studies - iron decrease - ferritin decrease - TIBC increase best: Bone marrow bx (rarely needed)
iron deficiency anemia tx
iron 2-6wks for anemia iron 2-6mo for iron stores
anemia of chronic disease path
chronic inflammatory disease
anemia of chronic disease pt
anemia
anemia of chronic disease dx
iron studies - iron decrease - ferritin increase - TIBC decrease best: bone marrow bx (rarely needed)
anemia of chronic disease tx
give EPO treat inflammatory disease
thalassemia path
genetic mutations, loss of genes, 4alpha, 2beta
thalassemia pt
asx (1 α deleted) minor (2alpha deleted, 1beta deleted) major (3alpha deleted, 2beta deleted) dead (4alpha)
thalassemia dx
iron normal ferritin normal TIBC normal Hgb electrophoresis
thalassemia tx
minor = do nothing major = transfusion = deferoxamine
sideroblastic path
irreversible, B6, cancer Reversible, Lead, EtOH, copper, isoniazid
sideroblastic pt
anemia
sideroblastic dx
iron increase (done) ferritin normal TIBC normal Best: bone marrow bx (ringed sideroblasts)
sideroblastic tx
remove exposure, give back B6, try to treat cancer
sickle cell path
autosomal recessive, HgbSS valine for glutamic acid sickle under stress - acidosis - dehydration
sickle cell pt
emergency acute - acute chest = MI, CHF - acute brain = CVA - priapism hospitalize acute - vaso-occlusive crisis chronic - asplenia - avascular necrosis - osteomyelitis
sickle cell dx
1st: smear = sickled cells - use 1st time and crisis best: Hgb electrophoresis (SC, SS) - use 1st time only
sickle cell tx
hydroxyurea = increase HgbF, decrease HgbSS IVF, O2, pain control (hospital) exchange transfusion (emergency)
sickle cell f/u
iron overload (deferoxamine)
G6PD deficiency path
decrease G6PD hypoxemic = hemolysis
G6PD deficiency pt
African American males Dapsone, TMP-SMX, nitrofurantoin
G6PD deficiency dx
1st: smear = bite cells, Heinz bodies best: G6PD levels 6-8wks
G6PD deficiency tx
supportive avoid stress
hereditary spherocytosis path
deficiency in Spectrin, Ankrin, Pallidin
hereditary spherocytosis pt
hemolysis, spherocytes
hereditary spherocytosis dx
1st smear = spherocytes best = osmotic fragility
hereditary spherocytosis tx
folate + Fe splenectomy
paroxysmal nocturnal hemoglobinuria path
PIG-A deficiency
paroxysmal nocturnal hemoglobinuria pt
paroxysmal (once in a while) nocturnal (happens at night) hemoglobinuria (dark urine) + abdominal vein thrombosis
paroxysmal nocturnal hemoglobinuria dx
flow cytometry decrease CD55, decrease CD59
paroxysmal nocturnal hemoglobinuria tx
biologics (eculizumab)
warm autoimmune hemolytic anemia path
IgG (cancer, drugs, rheum)
warm autoimmune hemolytic anemia pt
hemolysis everywhere
warm autoimmune hemolytic anemia dx
Coomb’s test IgG
warm autoimmune hemolytic anemia tx
1st line: steroids recurrent: splenectomy severe: IVIG refractory to splenectomy: rituximab
cold autoimmune hemolytic anemia path
IgM (mycoplasma, mono)
cold autoimmune hemolytic anemia pt
hemolysis in the cold - tips of digits - tips of nose
cold autoimmune hemolytic anemia dx
1st: Coomb’s test negative for IgG
cold autoimmune hemolytic anemia tx
avoid the cold refractory: rituximab
microangiopathic hemolytic anemia path
schistocytes = MAHA