Anemia Flashcards
What is anemia?
decrease in RBC or hemoglobin
Signs/Symptoms of Anemia
- exertional dyspnea
- angina
- tachycardia
- fatigue
- Pallor
may be asymptomatic if develops slowly
Normal RBC
4.5-5.5 x 10^6 cells/uL –> male
4.1-4.9 x 10^6 cells/uL –> female
Normal Hemoglobin
13.5-18 g/dL –> male
12-16 g/dL –> female
oxygen carrying capacity
Diagnosis
Hb < 13.5 g/dL –> male
Hb < 12 g/dL –> female
Normal Mean Corpuscular Volume (MCV)
80-100 mm^3
average volume of RBC (size)
Normal RBC Distribution Width (RDW)
11.5-14.5%
variation in size of RBCs (range)
Normal Ferritin
15-200 ng/mL
acute phase reactant –> elevated in acute inflammation or chronic disease
Diagnostic Ferritin
< 45 ng/mL
Normal TSAT
20-50%
amount of iron ready for erythropoiesis
Diagnostic TSAT
< 20%
Diagnostic B12
< 200 pg/mL
Diagnostic Folate
< 5 ng/mL
Causes of Anemia
Decreased RBC production
- Chronic diseases: CKD, cancer, CHF
- Nutritional deficiencies: iron, folic acid, vitamin B12
Increased RBC destruction
- drugs
- sickle cell anemia/thalassemia
Increase RBC loss
- acute blood loss
- NSAIDs, ASA
Microcytic
MCV < 80
iron deficiency
sickle cell anemia
thalassemia