Hematologic Function Review

Overview of Hematologic Function Alterations

Review Activities

  • Navigate to Review Modules.

  • Open Adult Medical Surgical Nursing and study:

    • Chapter 25: Pulmonary Embolism

    • Chapter 40: Hematologic Diagnostic Procedures

    • Chapter 41: Blood and Blood Product Transfusions

    • Chapter 42: Anemias

  • Complete application exercise and active learning scenario after each chapter (20 minutes each).

Learning Objectives

  • Explain the pathophysiology of hematologic function.

  • Explore epidemiological and etiological risk factors contributing to acute and chronic bleeding disorders.

  • Describe the impact of hematologic disorders on overall health.

  • Differentiate clinical presentations in patients with hemorrhagic bleeding disorders.

  • Explore the nurse's role in caring for patients with hematologic disorders.

  • Apply the nursing process using clinical judgment functions in caring for patients with hemorrhagic disorders.

Anatomy and Physiology of the Hematologic System

  • Components of the Circulatory System:

    • Arteries

    • Veins

    • Blood

    • Red Blood Cells (RBCs)

    • White Blood Cells (WBCs)

    • Platelets

Blood Clots

Pathophysiology

  • Formation and significance of blood clots.

  • Impacts on blood flow within the circulatory system.

Etiology and Epidemiology

  • Statistics: Approximately 90,000 people in the U.S. annually (CDC, 2022).

  • Increased risk in clients with cancer.

Impact on Overall Health

  • Potential damage to organs due to inadequate blood supply.

  • Psychological effects: Anxiety, PTSD.

  • Importance of safety measures, especially in postoperative care.

  • Aging adults have an increased risk of blood clot formation.

Clinical Presentation

  • Recognizable conditions associated with blood clots include:

    • Pulmonary Embolism (PE)

    • Myocardial Infarction (MI)

    • Stroke

Diagnostic Studies

  • Tests:

    • D-Dimer

    • Ultrasound

    • CT scans

Role of the Nurse

  • Addressing client needs and environmental factors.

  • Emphasis on safety considerations:

    • Dosage of anticoagulants.

    • Educating clients on potential side effects of anticoagulation therapy.

Applying the Nursing Process

  • Steps to implement the nursing process:

    • Recognize cues and perform assessments.

    • Analyze cues and formulate a diagnosis.

    • Prioritize hypotheses from the analysis.

    • Generate solutions through planning.

    • Implement care actions.

    • Evaluate the outcomes.

Deep Vein Thrombosis (DVT)

Pathophysiology

  • Blood clot typically forms in large veins of the lower extremities.

Etiology

  • Major risks include immobility and dehydration.

Impact on Overall Health

  • Long-term complications include decreased mobility.

  • Patients need to understand anticoagulation therapy and monitor bleeding risks.

Clinical Presentation

  • Symptoms:

    • Redness in the lower leg

    • Swelling

Diagnostic Studies

  • Common Tests:

    • Venous Doppler

    • Contrast Venography

Role of the Nurse

  • Monitor symptoms such as shortness of breath and chest pain.

  • Importance of early ambulation post-surgery and managing anticoagulant therapy.

Applying the Nursing Process

  • Same steps for nursing process as before:

    • Recognize, analyze, prioritize, generate, take actions, evaluate.

Hemorrhage

Pathophysiology

  • Adults can tolerate a loss of up to 14% of blood volume before significant effects occur.

  • Defined as significant blood loss with varying causes and complications.

Impact on Overall Health

  • Physiological and psychological effects (hypovolemic shock, altered mental status).

  • Risks like orthostatic hypotension, particularly in older adults with comorbidities.

Clinical Presentation

  • Signs include:

    • Internal bleeding, characterized by symptoms like hemoptysis (coughing blood).

    • Manifestations related to traumatic injuries.

Role of the Nurse

  • Key tasks include:

    • Identifying the source of bleeding (internal or external).

    • Ensuring IV access and administering fluids as necessary.

Applying the Nursing Process

  • Repeat the standardized steps for the nursing process.

Discussion Questions

  • Case studies examining scenarios involving blood loss and prioritizing nursing care.

Anemia

Iron Deficiency Anemia

Pathophysiology

  • Most common anemia worldwide, characterized by low hemoglobin.

  • Hemoglobin production requires iron; deficiency can stem from poor nutrition or blood loss.

Impact on Overall Health

  • Consequences include:

    • Fatigue leading to reduced activity and social isolation.

Clinical Presentation

  • Symptoms such as shortness of breath, dizziness, and palpitations.

Role of the Nurse

  • Importance of education about iron-rich foods and supplements.

Applying the Nursing Process

  • Standard nursing process framework applied for anemia management.

Vitamin Deficiency Anemia

Pathophysiology

  • Relies on intrinsic factor for B12 absorption; can be caused by autoimmune conditions.

Impact on Overall Health

  • Psychological issues like depression.

  • Safety risks, including neuropathy.

Clinical Presentation

  • Similar fatigue and dizziness as seen in other anemias.

Role of the Nurse

  • Need for dietary education, especially for those with dietary restrictions.

Applying the Nursing Process

  • Behavioral approach following the nursing process steps.

Sickle Cell Anemia

Pathophysiology

  • Inherited disorder leading to sickle-shaped RBCs.

Impact on Overall Health

  • Crisis occurrences can lead to significant pain and fatigue.

Clinical Presentation

  • Manifestations begin typically around 6 months of age with pain episodes.

Role of the Nurse

  • Emphasis on patient hydration and pain management.

Applying the Nursing Process

  • Continue using the nursing process in care contexts.

Blood Cancers

Lymphoma and Myeloma

Pathophysiology

  • Lymphoma and myeloma characterized by abnormal growth in lymph system cells and plasma cells respectively.

Impact on Overall Health

  • Risks related to fatigue and the need for assistance in daily living activities.

Clinical Presentation

  • Symptoms include swollen lymph nodes and anemia.

Role of the Nurse

  • Factors like environmental exposures to chemicals should be discussed.

Applying the Nursing Process

  • Utilize structured nursing process methods for patients.

Acute Lymphoblastic Leukemia (ALL)

Pathophysiology

  • Involves excessive lymphocyte production at the expense of other blood cells.

Impact on Overall Health

  • Patients experience anxiety and increased risk of infections.

Clinical Presentation

  • Symptoms include fatigue, bruising, fever, and pain.

Role of the Nurse

  • Educate patients on risk management concerning infections.

Applying the Nursing Process

  • Adhere to the structured nursing process.

Chronic Myelogenous Leukemia (CML)

Pathophysiology

  • Characterized by the Philadelphia chromosome and related genetic mutations.

Impact on Overall Health

  • Affects psychosocial status requiring family involvement in care.

Clinical Presentation

  • Symptoms suggestive of anemia and fatigue.

Role of the Nurse

  • Focus on dietary management and the physical well-being of the client.

Applying the Nursing Process

  • Standard application of nursing responsibilities and strategies.

Treatments and Therapies

Blood Transfusions

  • Used for conditions like anemia, various cancers, and hypovolemic shock.

  • Safety features: type and crossmatching.

  • Potential risks associated with transfusion, with a need for thoughtful preparation.

Discussion Questions

  • Case studies assessing risk management in scenarios requiring transfusions.

Self-Reflection Activities and Lesson Reflections

  • Engage with reflective questions relating to client management, discussing care approaches for anemia, and the psychosocial implications of various conditions.

  • Emphasize the critical thinking involved in nursing practices and interdisciplinary cooperation.

  • Reflection on differences in nursing skills and knowledge pre- and post-study of hematologic disorders.