Pediatric Anaemia: Types, Causes, and Nursing Care

Anemia remains one of the most common blood disorders affecting children worldwide. The World Health Organization estimates that approximately half of all preschool-age children globally suffer from some form of anemia. When a child develops anemia, their body doesn’t have enough healthy red blood cells to deliver adequate oxygen to tissues, which can affect growth, development, and daily functioning. Understanding the types, causes, and appropriate nursing interventions is essential for healthcare professionals caring for pediatric patients with this condition.

What is pediatric anemia? 🔗

Anemia in children occurs when the hemoglobin level falls below normal for the child’s age. Hemoglobin is the protein within red blood cells responsible for carrying oxygen from the lungs throughout the body. When hemoglobin levels drop, oxygen delivery to organs and tissues decreases, leading to various symptoms ranging from mild fatigue to serious complications.

Unlike adults, children have different hemoglobin norms that vary by age. After age 12, these values can be further divided by gender. The condition can be temporary due to nutritional deficiencies or chronic when caused by inherited disorders or bone marrow problems.

Types of anemia in children 🔗

Pediatric anemia is classified into three main categories based on the size of red blood cells: microcytic (small cells), normocytic (normal-sized cells), and macrocytic (large cells). The most clinically significant types in children include iron deficiency anemia, megaloblastic anemia, and aplastic anemia.

Iron deficiency anemia 🔗

This represents the most common nutritional deficiency in children across both developing and industrialized nations. Iron deficiency anemia occurs when the body lacks sufficient iron to produce adequate hemoglobin. Children aged 9 to 24 months are particularly vulnerable because of their rapid growth during this period.

Causes of iron deficiency anemia include:

• Inadequate dietary intake: Diets lacking iron-rich foods fail to meet the body’s requirements, especially during growth spurts
• Excessive cow’s milk consumption: Children under 12 months drinking cow’s milk instead of breast milk or iron-fortified formula face higher risk because cow’s milk is low in iron and can interfere with iron absorption
• Malabsorption disorders: Conditions affecting the gastrointestinal tract can prevent proper iron absorption
• Blood loss: Chronic gastrointestinal bleeding or other sources of blood loss deplete iron stores
• Prematurity: Premature infants have lower iron stores at birth

Beyond causing anemia, iron deficiency has been linked to cognitive defects in children, some of which may be reversible with treatment. This connection makes early identification and treatment particularly important.

Megaloblastic anemia 🔗

Megaloblastic anemia is a type of vitamin deficiency anemia characterized by unusually large, abnormally shaped red blood cells. These oversized cells, called megaloblasts, don’t divide and reproduce normally, resulting in fewer functional red blood cells in circulation.

Primary causes include:

• Vitamin B12 deficiency: Can result from inadequate dietary intake, poor absorption due to digestive disorders, or pernicious anemia where the body cannot produce intrinsic factor needed for B12 absorption
• Folate (vitamin B9) deficiency: Occurs with diets lacking green vegetables, fruits, meat, and liver, or from malabsorption syndromes
• Digestive system disorders: Celiac disease, inflammatory bowel disease, and prior gastrointestinal surgeries can impair nutrient absorption
• Inherited conditions: Rare genetic disorders affecting vitamin transport and metabolism

Children with megaloblastic anemia may experience nerve damage symptoms including tingling sensations, loss of sensation, confusion, and balance problems, particularly with B12 deficiency.

Aplastic anemia 🔗

Aplastic anemia is a rare but serious condition where the bone marrow fails to produce enough of all three types of blood cells: red cells, white cells, and platelets. This comprehensive failure distinguishes it from other anemias and makes it potentially life-threatening.

Causes are categorized as acquired or inherited:

• Acquired causes (80-85% of cases): Viral infections such as hepatitis, Epstein-Barr virus, or cytomegalovirus; exposure to toxins like benzene and pesticides; certain medications including some antibiotics and arthritis drugs; radiation and chemotherapy
• Inherited causes (15-20% of cases): Genetic syndromes including Fanconi anemia, dyskeratosis congenita, Shwachman-Diamond syndrome, and Diamond-Blackfan anemia
• Idiopathic: Many cases occur without identifiable cause, often involving inappropriate immune system attacks on bone marrow

Recognizing symptoms of pediatric anemia 🔗

Symptoms vary depending on the type and severity of anemia. Mild cases often present with no symptoms at all. However, as the condition progresses, children may exhibit:

• General symptoms: Fatigue, weakness, pale skin and mucous membranes, irritability, decreased appetite
• Cardiovascular signs: Rapid or irregular heartbeat, shortness of breath during activity
• Neurological manifestations: Dizziness, headaches, difficulty concentrating, developmental delays
• Specific to aplastic anemia: Frequent infections, easy bruising, prolonged bleeding, petechiae

Young children may struggle to articulate how they feel, making objective assessment crucial. Some children with iron deficiency anemia develop pica, an unusual craving to eat non-food items like dirt, clay, or ice.

Diagnostic approach 🔗

The American Academy of Pediatrics recommends universal anemia screening at 12 months of age, along with assessment for risk factors. Diagnosis typically involves:

• Complete blood count (CBC): Measures hemoglobin, hematocrit, and red blood cell counts
• Mean corpuscular volume (MCV): Determines whether anemia is microcytic, normocytic, or macrocytic
• Reticulocyte count: Evaluates bone marrow function
• Iron studies: Serum iron, ferritin, and total iron-binding capacity
• Vitamin levels: B12 and folate measurements for suspected megaloblastic anemia
• Bone marrow aspiration and biopsy: Essential for diagnosing aplastic anemia and ruling out other conditions

Nursing care and management 🔗

Effective nursing care requires addressing both the underlying cause and managing symptoms. Key nursing priorities include:

Assessment and monitoring 🔗

Nurses should monitor vital signs carefully, assessing pulses for rate, rhythm, and volume. Regular assessment of skin color, capillary refill, and energy levels helps track disease progression. Monitoring for signs of infection is critical in children with aplastic anemia who have compromised immune function.

Medication administration 🔗

For iron deficiency anemia, iron supplementation through oral ferrous sulfate or intramuscular iron dextran is common. When administering intramuscular iron, the Z-track method should be used to prevent leakage into subcutaneous tissue. The injection site should not be massaged afterward.

Megaloblastic anemia typically requires B12 injections (initially daily, then weekly, then monthly) or high-dose oral supplements, along with folic acid supplementation.

Supportive care 🔗

Children with aplastic anemia need comprehensive supportive care including blood transfusions for both red cells and platelets, preventive antibiotic therapy, and medications stimulating white blood cell production. Behavioral interventions such as thorough hand washing and avoiding crowds or sick individuals help prevent infections.

Activity management 🔗

Nursing interventions should address fatigue and activity intolerance. Planning rest periods, spacing activities, and monitoring for exertional symptoms helps children maintain function while preventing overexertion.

Family education and prevention 🔗

Nurses play a vital role in educating families about dietary modifications and disease management. For iron deficiency prevention, parents should be counseled to:

• Provide iron-rich foods including green vegetables, lean meats, beans, and iron-fortified cereals
• Limit cow’s milk to recommended amounts (no cow’s milk before age 1, limited quantities thereafter)
• Pair iron-rich foods with vitamin C to enhance absorption
• Avoid giving iron supplements with milk or antacids, which inhibit absorption

Parents should be informed that iron supplements may cause stool color changes and constipation. Dental hygiene is important as liquid iron preparations can stain teeth.

For all types of anemia, families should understand warning signs requiring immediate medical attention: severe fatigue, difficulty breathing, signs of infection, unusual bleeding or bruising, and worsening symptoms despite treatment.

Prognosis and outcomes 🔗

With appropriate treatment, most children with iron deficiency anemia recover fully within two months. Megaloblastic anemia due to nutritional deficiencies responds well to vitamin supplementation, though some children may require lifelong treatment if absorption problems persist.

Aplastic anemia outcomes have improved significantly, with survival rates reaching 90% after immunosuppressive therapy or stem cell transplantation. However, this serious condition requires ongoing monitoring and specialized care from pediatric hematologists.

What do you think? How might early screening programs in your community help identify children at risk for anemia before symptoms develop? What barriers might families face in ensuring adequate iron intake for their children?

References

1. https://www.childrenshospital.org/conditions/anemia
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC9373018/
3. https://www.aafp.org/pubs/afp/issues/2016/0215/p270.html
4. https://my.clevelandclinic.org/health/diseases/23160-megaloblastic-anemia
5. https://www.nationwidechildrens.org/conditions/health-library/megaloblastic-anemia-in-children
6. https://www.childrenshospital.org/conditions/aplastic-anemia
7. https://leveluprn.com/blogs/pediatric-nursing/28-cardiovascular-disorders-iron-deficient-anemia-sickle-cell-anemia
8. https://pubmed.ncbi.nlm.nih.gov/36867357/