Leukemia

Introduction to Leukemia

  • Definition: Group of cancers affecting blood and blood-forming tissues.

  • Impact Areas: Bone marrow, lymphatic system, spleen.

  • Age Groups: Occurs across all age groups.

  • Pathophysiology: Accumulation of dysfunctional cells due to unregulated cell division.

  • Statistics: Accounts for approximately 28% of all childhood cancers.

  • Prognosis: Fatal if untreated; follows a progressive course.

Causes of Leukemia

  • No single cause identified.

  • All cancers, including leukemia, start from DNA mutations in certain cells.

  • Main contributors:

    • Genetic factors.

    • Environmental influences (e.g., chemical agents like benzene).

    • Previous chemotherapy treatments.

    • Viruses and radiation exposure.

    • Immunological deficiencies.

Pathophysiology of Leukemia

  • Figure 4.13: Visual representation of common sites for leukemic cell infiltration (CNS, testes, lymph nodes, liver, spleen, joints).

  • Classification:

    • Acute vs. Chronic: Based on cell maturity and disease onset.

      • Acute: Characterized by rapid proliferation of immature hematopoietic cells.

      • Chronic: Involves more mature white blood cells; develops gradually.

  • Leukocyte Involvement: Myelogenous or lymphocytic.

Types of Leukemia

  • Chronic Myelogenous Leukemia (CML):

    • Definition: Excessive development of neoplastic granulocytes in the bone marrow.

    • Symptoms: Granulocytes at all developmental stages; infiltrate liver and spleen.

    • Phases: Chronic stable phase followed by an acute blastic phase.

    • Genetics: Presence of Philadelphia chromosome (>98% of CML patients).

  • Chronic Lymphocytic Leukemia (CLL):

    • Definition: Most common leukemia in adults in the U.S.; accumulation of functionally inactive lymphocytes.

    • Symptoms: Infiltration of lymphocytes into bone marrow, spleen, and liver; lymph nodes throughout the body.

    • Complications: Rare in early stages but may lead to nerve pressure and pulmonary symptoms.

    • Typical demographic: Older adults.

Clinical Manifestations

  • Bone Marrow Failure: Overcrowding by abnormal cells leading to inadequate production of normal cells.

  • Resulting Conditions:

    • Anemia

    • Thrombocytopenia

    • Decreased functioning white blood cells

  • Progression: Fewer normal blood cells, accumulation of aberrant leukemic cells can lead to:

    • Enlarged spleen and liver.

    • Bone pain and oral lesions.

    • Solid masses.

  • Life-threatening risks with high leukemic white counts (e.g., >100,000 cells).

Diagnostic Studies

  • Primary Methods: Peripheral blood evaluation and bone marrow examination.

  • Importance of Classification: Determines prognosis and treatment options.

  • Additional Studies: Lumbar puncture, PT and CT scans to detect leukemic cells in other areas.

Interprofessional Care

  • Treatment Goals: Some patients may be cured; others aim for remission or disease control.

  • Impact of Relapses: Prognosis worsens with each relapse; each subsequent treatment may be harder to achieve.

  • Initial Emergency Treatments: Leukapheresis or hydroxyurea for extremely high white blood counts to reduce the risk of thrombosis.

  • Drug Therapy: Combination drug therapy is essential.

    • Goals: Decrease drug resistance, minimize toxicity, interrupt cell growth at multiple cell cycle points.

  • Other Treatments: Corticosteroids and radiation therapy (total body radiation for bone marrow transplant patients).

Nursing Assessment

  • Subjective Data: Health history, toxin exposure, current medications, functional health status.

    • Notable symptoms: Mouth sores, bleeding, fatigue, gastrointestinal issues.

  • Objective Data:

    • Signs of fever, generalized lymphadenopathy, lethargy.

    • Increased heart rate, exam for oral ulcers, joint pain, neurological symptoms, and skin assessments.

  • Recognition of signs linked to abnormal white blood cells due to inadequate room for normal cells.

Monitoring and Management

  • Primary Goals: Patient understanding treatment plans, minimal side effects and complications, establishing realistic goals.

  • Importance of Follow-Up: Vigilant monitoring for signs of disease control and relapse.

  • Education: Teaching patients/caregivers about disease management, warning signs, and when to seek emergency care.

Long-Term Survivor Care

  • Rehabilitation Goals: Address physical, psychological, social, and spiritual consequences of the illness and treatment.

  • Support Networks: Involvement in survivor networks to mitigate financial and emotional burdens.

  • Follow-Up Care: Importance of monitoring health, vaccinations, and continued rehabilitation assessments.

Expected Outcomes

  • Effective coping with diagnosis, treatment, and prognosis.

  • No complications due to the disease or treatment.

  • Ongoing support during treatment phases.

Conclusion

  • Important considerations for leukemia nursing care include vigilance against neutropenia, patient education for self-care, and effective communication during transitions in care.