Sachin Shared "Hematology" - 96 Picmonics
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Hematology
Hemoglobin
- Hemoglobin Has Four Iron Hemes
- Lots Of Hemoglobin In Red Blood Cells
- High O2 Levels Increase O2 Binding
- High Temperature Reduces O2 Binding
- High CO2 Levels Reduce O2 Binding
- Low pH Reduces O2 Binding
- Myoglobin Binds Oxygen in Muscle
2 mins
Thrombopoietin
- Mechanism
- Increases Megakaryocyte Proliferation
- Indication
- Autoimmune Thrombocytopenia
- Drugs
- Romiplostim
- Eltrombopag
1 min
Lymphatics
- Characteristics
- Recycles 10% of Interstitial Fluid
- Transport Large Lipids from Lacteals
- Unidirectional Valves
- Lymph Nodes Filter Lymph
- WBCs Monitor Lymph for Pathogens
- Merge with Veins
2 mins
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
Types of Blood Products
- Types
- Whole Blood
- Packed Red Blood Cells
- Fresh Frozen Plasma
- Immunoglobulins
- Clotting Factors
- Albumin
- Platelets
- Considerations
- Use within 24 Hours
- Washing Removes Antibodies
- Irradiation Destroys WBCs
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
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
Blood Types
- Allele A is Dominant
- Allele B is Dominant
- Allele O is Recessive
- Genotypes AA and AO have Type A Blood
- Genotypes BB and BO have Type B Blood
- Genotype AB is co-dominant and has Type AB Blood
- Genotype OO Results in Type O Blood
2 mins
Blood Types and Compatibilities
- ABO Compatibility
- No Antigens (Type O Blood)
- Universal Donor
- A Antigen (Type A Blood)
- B Antigen (Type B Blood)
- AB Antigen (Type AB Blood)
- Universal Recipient
- Rhesus (Rh) Compatibility
- Rh (Rhesus) Antigen
- Never Rh+ to Rh-
- Considerations
- Blood Transfusion
- Obstetric Patient
2 mins
Bleeding Time Lab Values
- 2-7 Minutes
41 secs
Glanzmann Thrombasthenia
- Pathophysiology
- Autosomal Recessive or Acquired as an Autoimmune Disorder
- Deficiency of Glycoprotein IIb/IIIa (Gp IIb/IIIa) Receptor
- Defective Platelet-to-Platelet Aggregation
- Symptoms
- Mucous Membrane Bleeding (Gingival Bleeding)
- Easy Bruising
- Increased Bleeding Time
- Normal Platelet Count
- Considerations
- Avoid NSAIDs
2 mins
Bernard-Soulier Syndrome
- Mechanism
- Autosomal Recessive
- Deficiency of Glycoprotein Ib (GpIb) Receptor
- Symptoms
- Mucosal Membrane Bleeding
- Menorrhagia
- Easy Bruising
- Labs
- Large Platelets
- Increased Bleeding Time
- No Platelet Agglutination with Ristocetin
3 mins
Thrombotic Thrombocytopenic Purpura (TTP)
- Inhibition or deficiency of ADAMTS 13
- vWF Multimers are Not Degraded
- Microthrombi (and Emboli)
- Symptoms
- FAT RN Pentad
- Fever
- Anemia
- Thrombocytopenia
- Renal Dysfunction
- Neurologic Abnormalities (Altered Mental status)
- Treatment
- Plasmapheresis
- Corticosteroids
- Splenectomy
2 mins
Hemolytic Uremic Syndrome (HUS)
- Children
- Pathophysiology
- Preceded by Acute Diarrheal Illness
- Endothelial Damage
- Classic Triad of Symptoms
- Microangiopathic Hemolytic Anemia (MAHA)
- Thrombocytopenia
- Renal Failure
- Labs
- Helmet cells
- LDH
- Treatment
- Dialysis
- Supportive
2 mins
Heparin Induced Thrombocytopenia (HIT)
- Pathophysiology
- 5-10 Days After Heparin Exposure
- Heparin-Platelet Factor 4 Complex
- Autoantibodies Form Against Complex
- Heparin-Platelet Factor 4-Antibody Complex Binds Platelets
- Platelet Aggregation
- Procoagulant Release
- Symptoms
- Thrombocytopenia
- Diagnosis
- Serotonin Release Assay (SRA)
- Treatment
- Stop Heparin, Start Direct Thrombin Inhibitor
2 mins
Hemophilia
- Cause/Mechanism
- Genetic Mutation
- Assessment
- Prolonged Bleeding
- Pain
- Hemarthrosis
- Interventions
- Clotting Factor Replacement Therapy
- DDAVP (Desmopressin Acetate)
- Antifibrinolytic Therapy
- Analgesics
- Considerations
- Genetic Counseling
- Prevent Injury
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
Protein C or S Deficiency
- Pathophysiology
- Autosomal Dominant
- Inability to Inactivate Factor Va and VIIIa
- Symptoms
- Hypercoagulable State
- Recurrent DVTs or DVTs at Young Age
- Treatment
- Begin Heparin
- Slowly Bridge to Warfarin
- Hemorrhagic Skin Necrosis
2 mins
Polycythemia Vera Disease
- Pathophysiology
- JAK2 Mutation leading to increased red blood cells
- Tyrosine Kinase
- Symptoms
- Erythromelalgia
- Pruritus
- Often After Hot Shower
- Headache
- Treatment
- Phlebotomy
- Aspirin
1 min
Polycythemia Vera Labs
- Lab Findings (The 4 H's)
- Hypervolemia
- Histaminemia
- Hyperviscosity
- Hyperuricemia
- Diagnosis
- Elevated Hemoglobin or Hematocrit
- Positive Jak2 Mutation
1 min
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