Hematology Lecture 01/09
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- What is a histiocyte?
- generally, a tissue macrophage
- What is a left-shift?
- - an increase in neutrophils and an increase in bands - due to bacterial infections
- What is a right shift?
- - due to an increase in lyphocytes (lymphocytosis) - can be caused by viral infection, parasitic infection, TB, or cancer
- Name a drug that stimulates the production of neutrophils
- neupogen
- What is a leukomoid reaction?
- - a profound increase in WBC - 35000-50000
- What is essential thrombocytosis?
- an increase in platelets in the range of millions
- What is the normal value for RBCs?
- 4-5 x 10^6
- What are the 2 types of polycythemia?
- 1. reactive - reacting to physiologic or environmental condition (smoking, COPD, living at high altitude) 2. polycythemia vera - a myeloproliferative disorder (aka primary polycythemia
- Patients with physical findings of thrombocytopenia generally have platelet levels at this level?
- < 50,000
- An elevated reticulocyte count can is indicative of what process?
- hemolysis or bleeding