Andrew Shared "Blood & Host Defense" - 22 Picmonics
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Blood & Host Defense
Whole Blood Composition
Characteristics
Plasma
Electrolytes And Other Solutes
Proteins
Albumin
Fibrinogen
Globulins
Water
Formed Elements
Buffy Coat
White Blood Cells (WBC)
Platelets
Red Blood Cells (RBC)
2 mins
Coagulation Cascade Overview
Secondary Hemostasis
Intrinsic Pathway
Partial Thromboplastin Time (PTT)
Heparin
Extrinsic Pathway
Prothrombin Time (PT)
Warfarin
Common Pathway
Thrombin
Convert Fibrinogen to Fibrin
Stabilizes the Platelet Plug
2 mins
Clotting Overview
Characteristics
Endothelial Cells are Damaged
Platelets Respond to Exposed Collagen and Stick
Platelets Release Recruiting Factors
More Platelets are Attracted
Soluble Fibrinogen Turns to Insoluble Fibrin
Fibrin Seals the Clot
Clot Dissolves
Liver Produces Clotting Factors
2 mins
Iron Deficiency Anemia
Causes
Malnutrition/Malabsorption
Hemorrhage
Signs
Microcytic, Hypochromic Anemia
Decreased Heme Synthesis
Labs
Decreased Reticulocytes
Decreased Ferritin
Increased Red Cell Distribution Width (RDW)
Poikilocytosis
Anisocytosis
Increased Central Pallor
2 mins
Beta Thalassemia
Mechanism
Microcytic, Hypochromic Anemia
Mediterranean Populations
Decreased Beta-Globin
Beta-Thalassemia Minor
Increased HbA2
No Intervention
Beta-thalassemia Major
Blood Transfusions
Hemochromatosis
Crew-cut on Skull X-Ray
Diagnosis
Electrophoresis
2 mins
GI Absorption
Stomach
Alcohol
Duodenum
Iron
Jejunum
Folate
Terminal Ileum
Vitamin B12
Bile Resorption
1 min
Folate Deficiency
Clinical Features
Macrocytic Anemia
Megaloblastic Anemia
Etiologies
Malabsorption
Dietary
Tea and Toast
Alcoholics
Medication-induced
Methotrexate
Trimethoprim
Increased Requirement
Hemolytic Anemia
Pregnancy
2 mins
Hereditary Spherocytosis Disease
Northern Europeans
Mechanisms
Autosomal Dominant
Spectrin/Ankyrin Deficiency
Spherocyte Formation
Hemolytic Anemia
Symptoms
Bilirubin Gallstones
Jaundice
Splenomegaly
3 mins
Hereditary Spherocytosis Diagnosis & Treatment
Labs
Increased MCHC
Spherocytes
Normocytic Anemia
Diagnosis
Eosin-5-Maleimide (EMA) Binding Test
Osmotic Fragility Test
Glycerol Lysis Test
Treatment
Folic Acid
Splenectomy
2 mins
Sickle Cell Anemia (Signs and Complications)
Signs
Crew-cut on Skull X-ray
Complications
Auto-splenectomy
Painful Crisis
Aplastic Crisis
Splenic-sequestration Crisis
Hyper-hemolytic Syndrome
Renal Papillary Necrosis
Salmonella osteomyelitis
Pulmonary Hypertension
Hyposthenuria
2 mins
Sickle Cell Anemia (Mechanism)
Intrinsic Normocytic Hemolytic Anemia
Point Mutation
Autosomal Recessive
African American
Dehydration or Decreased O2
Newborns Asymptomatic
Heterozygote Malarial Resistance
2 mins
Sickle Cell Anemia (Management)
Long Term Treatment
Hydroxyurea
Bone Marrow Transplant
Folate
Acute Treatment
Exchange Transfusion
Prophylaxis
Penicillin Prophylaxis
1 min
Anemia Lab Values
Iron Deficiency Anemia
Serum Iron Decreased
Transferrin Increased
Ferritin Decreased
% Transferrin Saturation Decreased
Pregnancy and OCP Use
Serum Iron Normal
Transferrin Increased
Ferritin Normal
% Transferrin Saturation Decreased
Anemia of Chronic Disease
Serum Iron Decreased
Transferrin Decreased
Ferritin Increased
% Transferrin Saturation Decreased or Normal
Hemochromatosis
Serum Iron Increased
Transferrin Decreased
Ferritin Increased
% Transferrin Saturation Increased
3 mins
Von Willebrand Disease
Mixed platelet and coagulation disorder
Mechanism
Autosomal Dominant Condition Leading to Reduced vWF
Defect in platelet plug formation
Labs
Increased Bleeding Time
PTT increased
Factor VIII decreased
Normal platelet count
Treatment
DDAVP (synthetic vasopressin)
1 min
Disseminated Intravascular Coagulation (DIC)
Pathophysiology
Bleeding State
Activation of Clotting Factors
Deficiency of Clotting Factors
Causes
Sepsis
Trauma
Obstetric Complications
Acute Pancreatitis
Malignancy
Nephrotic Syndrome
Transfusion
2 mins
Acute Myelogenous Leukemia (AML)
Myeloblasts Increase on Peripheral Smear
Median Onset 60 Years
T 15;17 M3 Subtype
Auer Rods
Disseminated Intravascular Coagulation (DIC) is a Common Presentation
M5 Gum Infiltration
Responds to Vitamin A
3 mins
Chronic Lymphocytic Leukemia (CLL)
Signs and Symptoms
Age > 60 Years
B Cell Neoplasm
Smudge Cells
Often Asymptomatic
Cold IgM Autoimmune Hemolytic Anemia
Warm IgG Autoimmune Hemolytic Anemia
Richter's Transformation
3 mins
Hodgkin Lymphoma Pathophysiology
Pathophysiology
Reed-Sternberg Cells
Binucleate
Owl's Eyes Appearance
CD 15 and CD 30
B Cell Origin
Bimodal Age Distribution
2 mins
Hodgkin Lymphoma Signs & Symptoms
Signs and Symptoms
Localized Single Group of Lymph Nodes
Contiguous Spread
Constitutional B Symptoms
Low-Grade Fever
Night Sweats
Weight Loss
2 mins
Chronic Myelogenous Leukemia (CML)
Pathophysiology
BCR-ABL
9;22 Translocation
Philadelphia Chromosome
Signs & Symptoms
Tyrosine Kinase
Low Alkaline Phosphatase
Splenomegaly
Considerations
Blast Crisis
Age 30 to 90 Years
Responds to Imatinib
3 mins
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