Pedriatric & Adult Hematopoiesis Flashcards
Percentage of Bone marrow in newborn and bone marrow is
80-90%
Active bone marrow
Percentage of Bone marrow in young adult (Age 20) and bone marrow is
60%
Active
(Hematopoiesis: proximal ends of large flat bones, pelvis, sternum or in long bones)
Percentage of Bone marrow in old adult (Age 55) and bone marrow is___ the other percentage is ___
40%
Active
Fat
What is Cellularity?
It is the ratio of marrow cells to fat (red marrow/yellow marrow)
Examples of Cellularity
- Normocellular
- Hypercellular/ Hyperplastic
- Hypocellular/ Hypoplastic
- Aplastic
- Normocellular: marrow has ____
- Hypercellular/ Hyperplastic: marrow has ____
- Hypocellular/ Hypoplastic: marrow has ____
- Aplastic: marrow has ____
- 30-70% hematopoietic cells
- > 70% hematopoietic cells
- <30% hematopoietic cells
- few or no hematopoietic cells
It is the ratio of GRANULOCYTES and their PRECURSORS to NUCLEATED ERYTHROID PRECURSORS
M:E (Myeloid: Erythroid) Ratio
Normal ratio of M:E (Myeloid: Erythroid) Ratio
3:1 or 4:1
These are excluded from M:E ratio
Lymphocytes
Monocytes
Types of Hematopoiesis
- Pluripotential stem cells
- Committed progenitor cells (Lymphoid/ Myeloid)
- Mature Blood Cells (PBS is used for assessment)
Additional types of Hematopoiesis
1.Diff. Ct. Smear
2. PBS
Simply counting the number of types of WBC
Diff. Ct. Smear
Special request to identify RBC morphology, especially & blast cells
PBS
Committed progenitor cells
- CGU-MEG
- CFU-GM (CFU-M)
- CFU-GM (CFU-G)
- BFU-E (CFU-E)
- CFU-Eo
- CFU-Bs
CGU-MEG
Growth factors/ Interleukins: _____
Mature Cells: _____
Thrombopoeitin, GM-CSF
Thrombocytes