Oct 21 RBC

The class includes important topics such as cancer (specifically leukemias), unit tests, and patient care insights.
Focus on understanding and memorizing concepts outlined in Units 2 and 3, with a commitment to student learning and ethical teaching practices.

Hairy Cell Leukemia:
- Rarity: Rare white blood cell neoplasm (2% incidence).
- Treatability: Highly treatable with a 5-year survival rate of 80%.
- Demographics: Median age of presentation is around 50; higher incidence in males (5:1 ratio).
- Features:
- Morphology: Large, immature white blood cells with thin chromatin.
- Cytoplasmic processes resembling "hair" giving the condition its name.
- Treatment:
- Splenectomy for splenomegaly due to inefficient removal of abnormal cells.
- Treatment for complications due to bone marrow crowding (anemia, bleeding disorders).

Case Study:
- A patient with undetected symptoms for years, leading to severe prognosis after diagnosis.
- Symptoms included significant back pain and loss of height due to osteoporosis.
Pathophysiology:
- Beta-2 microglobulin and an increase in calcium levels signal a potential malignancy.
- Inflammatory responses damage kidney function and contribute to anemia.
Benz Jones Protein:
- Produced by abnormal plasma cells; causes renal impairment and inflammation, leading to pain and organ damage.

Covers about one-third of all lymphomas; notable for the presence of Reed-Sternberg cells.
Demographics: Typically affects young adults (20s-30s).
Symptoms:
- Asymptomatic in early stages.
- Painless lymphadenopathy later on, possibly accompanied by systemic symptoms like fever, night sweats, and pruritus.
Risk Factor: Association with Epstein-Barr Virus (EBV).

Analysis of two types:
- Indolent: Slow progression, long survival rates.
- Aggressive: Rapid progression, early dissemination to organs.
Symptoms and Treatment:
- Similar focus on early detection via clinical presentation and necessary treatments.

Approximately 55% plasma and 45% formed elements (red and white blood cells, platelets).
Plasma Proteins:
- Albumin, globulins, fibrinogen (important for blood clotting).
Cellular Components:
- Erythrocytes (red blood cells, primarily function to transport O2 and CO2).
- Leukocytes (white blood cells, provide immune function).

Erythropoiesis occurs in different stages of life: yolk sac -> liver and spleen -> bone marrow from ages 10-12 onward.
Nutritional Requirements for Hematopoiesis:
- B12 and folate are critical for red blood cell formation.

Anemia: Inadequate O2 delivery to tissues due to insufficient quality/quantity of red blood cells.
Types:
- Aplastic anemia: Lack of production of blood cells in bone marrow (pancytopenia).
- Iron deficiency anemia: Most common, inadequate iron supply to produce hemoglobin.
- Megaloblastic anemia: Caused by B12 or folate deficiency, leading to abnormal red blood cell formation.

Fatigue, paleness, tachycardia, and other systemic symptoms due to insufficient oxygenation of tissues.

Overview of hereditary blood disorders like thalassemia, sickle cell anemia, and G6PD deficiency, with emphasis on their treatment interventions.
Treatment Considerations:
- Management strategies including splenectomy for conditions like hereditary spherocytosis.
- Importance of intravenous fluid management in acute blood loss.

Emphasis on understanding the long-term implications of untreated blood conditions and the physiological reasoning behind treatments.

Next Topics: Transition to neurophysiology and hemostasis.
Importance of consistent clinical monitoring and testing for early detection of blood and immune disorders.
- Schedule follow-ups, and ensure student accountability for attendance and participation in upcoming units.