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Questions and Answers
What is anemia characterized by?
What is anemia characterized by?
What is the primary diagnostic test for anemia?
What is the primary diagnostic test for anemia?
What is the normal range for Mean Corpuscular Volume (MCV)?
What is the normal range for Mean Corpuscular Volume (MCV)?
What type of anemia is characterized by red blood cells that are smaller than normal?
What type of anemia is characterized by red blood cells that are smaller than normal?
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What is the primary purpose of a Reticulocyte Count?
What is the primary purpose of a Reticulocyte Count?
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What is the diagnostic criterion for anemia in men?
What is the diagnostic criterion for anemia in men?
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What is the purpose of Iron Studies?
What is the purpose of Iron Studies?
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What is the purpose of a Bone Marrow Examination?
What is the purpose of a Bone Marrow Examination?
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What is the purpose of a Peripheral Blood Smear?
What is the purpose of a Peripheral Blood Smear?
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Study Notes
Anemia Diagnosis
Definition and Classification
- Anemia: a condition characterized by a decrease in red blood cell (RBC) mass, resulting in inadequate oxygen delivery to tissues
- Classified into three main categories:
- Microcytic anemia: RBCs are smaller than normal
- Normocytic anemia: RBCs are normal in size
- Macrocytic anemia: RBCs are larger than normal
Diagnostic Approach
-
Complete Blood Count (CBC): initial diagnostic test to evaluate anemia
- Red Blood Cell Count (RBC)
- Hemoglobin (Hb)
- Hematocrit (Hct)
- Mean Corpuscular Volume (MCV)
- Peripheral Blood Smear: examination of RBC morphology
- Reticulocyte Count: measures immature RBC production
Laboratory Tests
-
Iron Studies:
- Serum Iron
- Total Iron-Binding Capacity (TIBC)
- Transferrin Saturation
-
Vitamin Deficiency Tests:
- Vitamin B12 levels
- Folate levels
- Red Blood Cell Distribution Width (RDW): measures RBC size variation
- Bone Marrow Examination: in some cases, to evaluate bone marrow function and morphology
Diagnostic Criteria
- Anemia: Hb < 13.5 g/dL in men, < 12 g/dL in women
- Microcytic anemia: MCV < 80 fL
- Normocytic anemia: MCV 80-100 fL
- Macrocytic anemia: MCV > 100 fL
Additional Tests (as needed)
- Serum Erythropoietin (EPO) levels: to evaluate erythropoiesis
- Autoimmune Hemolytic Anemia (AIHA) Workup: to rule out AIHA
- Malaria or other infection tests: to rule out infectious causes
Anemia Diagnosis
Definition and Classification
- Anemia is a condition characterized by a decrease in red blood cell (RBC) mass, resulting in inadequate oxygen delivery to tissues
- Three main categories of anemia: microcytic, normocytic, and macrocytic, based on RBC size
Diagnostic Approach
- Complete Blood Count (CBC) is the initial diagnostic test to evaluate anemia, measuring:
- Red Blood Cell Count (RBC)
- Hemoglobin (Hb)
- Hematocrit (Hct)
- Mean Corpuscular Volume (MCV)
- Peripheral Blood Smear examination of RBC morphology
- Reticulocyte Count measures immature RBC production
Laboratory Tests
- Iron Studies:
- Serum Iron levels
- Total Iron-Binding Capacity (TIBC)
- Transferrin Saturation
- Vitamin Deficiency Tests:
- Vitamin B12 levels
- Folate levels
- Red Blood Cell Distribution Width (RDW) measures RBC size variation
- Bone Marrow Examination evaluates bone marrow function and morphology (in some cases)
Diagnostic Criteria
- Anemia: Hemoglobin (Hb) < 13.5 g/dL in men, < 12 g/dL in women
- Microcytic anemia: Mean Corpuscular Volume (MCV) < 80 fL
- Normocytic anemia: MCV 80-100 fL
- Macrocytic anemia: MCV > 100 fL
Additional Tests (as needed)
- Serum Erythropoietin (EPO) levels evaluate erythropoiesis
- Autoimmune Hemolytic Anemia (AIHA) Workup rules out AIHA
- Malaria or other infection tests rule out infectious causes
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Description
This quiz covers the definition and classification of anemia, including microcytic, normocytic, and macrocytic anemia, as well as the diagnostic approach using a complete blood count (CBC).
