THE CHILD WITH
HEMATOLOGIC OR
IMMUNOLOGIC DYSFUCTION
STUDY NOTES FOR REVISION
LATEST UPDATE 2026 WELL
EXPLAINED WITH DIAGRAM
ILLUSTRATIONS
The Hematologic System and Its Function
Origin of formed elements
, Red blood cell s
White blood cells
Platelets
Hematopoietic organs
Myeloid tissue (bone marrow)
Lymphatic system (fluid and structures)
Functions of cells
Regulation of cell productiono
Assessment of Hematologic
Function
Complete blood count with differential
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,
History and assessment findings
Child’s energy and activity level
Growth patterns
RED BLOOD CELL DISORDERS
Anemia
The most common hematologic disorder of
childhood
,
Decrease in number of RBCs and/or
hemoglobin concentration below normal
Decreased oxygen-carrying capacity of blood
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