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22 Cards in this Set
- Front
- Back
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Stages of neonatal hematopoiesis
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Mesoblastic, Hepatic, Myeloid
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Mesoblastic hematopoiesis
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Yolk sac- primitive erythroblasts
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Center for hematopoiesis during 3rd and 4th month
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Hepatic-liver
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When do leukocytes make an appearance?
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After week 9 of gestation
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Major site of hematopoiesis in 4th and 5th month
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Myeloid- bone marrow
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Red marrow
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Hematopoietically active bone marrow
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Yellow marrow
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Fatty inactive marrow
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Premature newborn hematopoiesis
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Foci of hematopoiesis is seen in liver, spleen, lymph nodes or thymus
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Pediatric developmental stages: infancy
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First year of life
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Pediatric developmental stages: first four weeks of life
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Neonatal
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Pediatric developmental stages: childhood
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Age 1 thru puberty
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Full term infant
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37-42 weeks of gestation
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Preterm or premature micropreemies
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24-26 weeks
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Post term gestational age
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>42 weeks
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Birth weight: small
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<2500 g
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Birth weight: very low
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<1500 g
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Birth weight: extremely low
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< 500 g
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Birth weight: large
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> 4000 g
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Red blood cell count- premature infants
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NRBCs 25/100 WBCs
Increase in dystrophic erythrocytes |
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Red blood cell count- full term infants
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Macrocytic RBC- orthochromic normoblasts 3-10/100 WBCs
Bioconcave discs relative to stomatocytes |
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Red blood cell count- 5-8 wks of life
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Physiologic anemia
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Red blood cell count- first 24 hours of life
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Increases and remains at this level for 2 weeks. Polycythemia of the Newborn, I utero hypoxia
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