Chapter 47: The Child With a Hematologic Alteration

Understanding these anatomical changes is essential because they reflect normal maturation and distinguish healthy development from pathologic alterations. The chapter establishes that children have physiologic differences in oxygen-carrying capacity compared to adults, making age-appropriate assessment critical for nursing practice. Iron deficiency anemia emerges as the most common hematologic problem in the pediatric population, typically arising from inadequate dietary intake, rapid growth demands, or excessive consumption of cow's milk without sufficient iron supplementation. Nursing interventions center on family education regarding iron supplementation strategies, the role of vitamin C in enhancing iron bioavailability, and consistent monitoring through hemoglobin testing. The discussion progresses to inherited genetic conditions, beginning with sickle cell disease, an autosomal recessive disorder characterized by abnormal hemoglobin that distorts red blood cells into rigid crescent shapes. This pathophysiology triggers severe clinical manifestations including vaso-occlusive crises with acute pain, splenic sequestration, and heightened susceptibility to serious infections. Management requires aggressive hydration, oxygen therapy, and opioid analgesia during acute episodes. Beta-thalassemia is presented as another serious inherited condition requiring chronic transfusion therapy and chelation treatment to prevent iron accumulation damage to vital organs. The chapter systematically reviews inherited bleeding disorders such as hemophilia A and B, distinguished by specific factor deficiencies in the coagulation cascade, and Von Willebrand disease, which compromises platelet function. Acquired disorders including immune thrombocytopenic purpura, characterized by autoimmune platelet destruction, and disseminated intravascular coagulation, a life-threatening condition of simultaneous pathologic clotting and bleeding, are thoroughly addressed. Aplastic anemia, resulting from bone marrow failure across all cell lines, concludes the pathophysiology section and often necessitates immunosuppressive interventions or hematopoietic stem cell transplantation. Throughout the chapter, nursing responsibilities integrate acute clinical management with comprehensive family education and injury prevention strategies tailored to each condition's unique complications.