Haematology Flashcards
What is the treatment for a patient with anemia (any type) and hemoglobin level < 7?
Packed RBCs.
Pt with anemia (any type) develops severe symptoms ….
Packed RBCs
MCV 80-100………………………….
MCV <80 …………………………..
MCV >100 ………………………..
MCV 80-100…………………………. Normal
MCV <80 ………………………….. microcytic anemia
MCV >100 ……………………….. macrocytic anemia
What is the most common cause of iron deficiency anemia in infants?
Prolonged breast feeding (start weaning at 4 months with iron-fortified cereal).
What is the most common cause of iron deficiency anemia in adults?
GIT bleeding (PUD) - Upper GI endoscopy.
MCC of iron deficiency anemia in old: …….…
MCC of iron deficiency anemia in old: cancer colon… colonoscopy.
What is the specific manifestation of iron deficiency anemia?
Pica.
What are the side effects of oral iron sulfate medication?
Black stool, abdominal pain.
What are the important lab findings in hemolytic anemia?
++ reticulocyte count & – haptoglobin.
Other lab findings in hemolytic anemia:
Other lab findings in hemolytic anemia: ++ billirubin, ++ LDH.
Anemia since birth………………….
MC affected organ in HS»> marked splenomegaly»>
pt with HS develops severe symptoms, lab shows hemolytic anemia& – reticulocyte count… Dx: inf…
TTT: packed RBCs
Inv of choice of HS:
Anemia since birth…………………. Hereditary spherocytosis (HS)
MC affected organ in HS»> marked splenomegaly»> splenectomy is a must
pt with HS develops severe symptoms, lab shows hemolytic anemia& – reticulocyte count… Dx: aplastic crisis DT parvo-virus inf… TTT: packed RBCs
Inv of choice of HS: osmotic fragility test
What is the confirmatory test for thalassemia?
Hb electrophoresis.
What is the first step in the treatment of hand-foot syndrome in patients with sickle cell anemia?
Strong analgesic.
What is the definitive treatment for vaso-occlusive crisis in patients with sickle cell anemia?
Exchange transfusion.
Describe the management of aplastic crisis in a patient with sickle cell anemia due to parvovirus infection.
Treatment with packed RBCs.
pt with SCA develops severe symptoms, lab shows hemolytic anemia& – reticulocyte count… Dx: aplastic crisis DT parvo-virus inf…
pt with SCA develops severe symptoms, lab shows hemolytic anemia& ++ reticulocyte count… Dx: hyperhemolytic crisis …
sickle cell anemia + marked pallor + marked spleen enlargement……crisis….TTT»»
Confirmatory test of SCA:
pt with SCA develops severe symptoms, lab shows hemolytic anemia& – reticulocyte count… Dx: aplastic crisis DT parvo-virus inf… TTT: packed RBCs
pt with SCA develops severe symptoms, lab shows hemolytic anemia& ++ reticulocyte count… Dx: hyperhemolytic crisis … TTT: packed RBCs
sickle cell anemia + marked pallor + marked spleen enlargement……sequestration crisis….TTT»»splenectomy
Confirmatory test of SCA: Hb electrophoresis.
What is the investigation of choice for hereditary spherocytosis?
Osmotic fragility test.
Describe the presentation of sequestration crisis in sickle cell anemia.
Sickle cell anemia + marked pallor + marked spleen enlargement.
Describe the confirmatory test for sickle cell anemia.
Hemoglobin electrophoresis.
Thalassemia:
Confirmatory test of thalassemia:
1st step in TTT of hand- foot $ in pt with sickle cell anemia:
1st step in TTT of priapism in pt with sickle cell anemia:
Definitive TT of hand- foot $, priapism or any presentation of vaso-occlusive crisis in pt with sickle cell anemia:
Thalassemia: AR disease
Confirmatory test of thalassemia: Hb electrophoresis.
1st step in TTT of hand- foot $ in pt with sickle cell anemia: strong analgesic.
1st step in TTT of priapism in pt with sickle cell anemia: strong analgesic.
Definitive TT of hand- foot $, priapism or any presentation of vaso-occlusive crisis in pt with sickle cell anemia: exchange transfusion.
What is the investigation of choice for G6PD deficiency?
G6PD enzyme activity one month after an attack.
People with G6PD deficiency are normally healthy, but must avoid these triggers. Certain triggers can cause red blood cells to be destroyed faster than they can be replaced (known as acute haemolytic anaemia or AHA). G6PD deficiency is diagnosed with a blood test.
Define the investigation of choice for autoimmune hemolytic anemia.
Coombs test.
What is the most common drug causing iron deficiency anemia?
Aspirin.
What is the most common drug causing aplastic anemia?
Diclofenac.
How would you describe the bone marrow biopsy findings in aplastic anemia?
Hypocellular fatty tissue.
Describe the most common cause of vitamin B12 deficiency.
Vegetarian diet.
MC of folic acid deficiency:
MC of folic acid deficiency: alcohol
What is the most common neurological manifestation in vitamin B12 deficiency?
Loss of posterior column function (loss of vibration and position sensation).
CBC of megaloblastic anemia:
CBC of megaloblastic anemia: large RBCs, MCV>100& large WBCs (hypersegmented neutrophils
What is the Schilling test used for in relation to vitamin B12 deficiency?
To diagnose the cause of the deficiency.
How would you treat megaloblastic anemia? neurological
Replacement of vitamin B12 and folic acid.
Define the diagnosis of pernicious anemia.
Detection of anti-intrinsic factor antibodies.
What specific test is used for anemia of chronic disease?
Increased ferritin levels.
Initial Test:
1. Complete Blood Count (CBC):
- The initial test for evaluating anemia is a CBC, which provides information on hemoglobin levels, hematocrit, and red blood cell indices. This helps to determine the presence and severity of anemia.
Best Test:
2. Serum Ferritin:
- The best test for diagnosing anemia of chronic disease is serum ferritin. Ferritin levels are typically normal or elevated in anemia of chronic disease, in contrast to iron deficiency anemia where ferritin levels are low. Elevated ferritin levels indicate adequate iron stores and help differentiate anemia of chronic disease from other types of anemia.
- Serum Iron and Total Iron-Binding Capacity (TIBC): Low serum iron and low TIBC are characteristic of anemia of chronic disease.
- C-Reactive Protein (CRP) and Erythrocyte Sedimentation Rate (ESR): These inflammation markers are often elevated in chronic diseases contributing to anemia.
For further detailed information, refer to the RACGP guidelines and relevant clinical resources:
- RACGP Clinical Guidelines
Describe the cause of anemia in end-stage renal disease.
Decreased erythropoietin production.
How would you diagnose and investigation immune thrombocytopenic purpura (ITP)?
Bone marrow biopsy showing increased megakaryocytes with defective budding.
Child with H/O URTI 1-2 Ws develops generalized petechial Hge… Dx: ITP.
Other inv of ITP:
Other inv of ITP: – platelets count, ++ Bleeding Time.
What is the treatment of choice for mild cases of ITP?
Observation.
What is the first-line treatment for moderate cases of ITP?
Corticosteroids.