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Hemolytic Anemias - Differential Diagnosis Algorithm

Signs of anemia and hemolysis:
 • ↓ Haptoglobin
 • ↑ LDH
Hemolytic Anemias ... Algorithm Signs of anemia ... Autoimmune Hemolytic Anemias ... Macroangiopathic, Microangiopathic ... #Hemolytic #Anemias
Anemia - Hemolysis Diagnostic Algorithm
Autoimmune hemolytic anemia
Microangiopathic hemolytic anemia
Probable thalassemia

Dr. Eric Strong @DrEricStrong - Strong Medicine
Anemia - Hemolysis ... Autoimmune hemolytic anemia ... Microangiopathic ... hemolytic anemia ... #Hemolysis #Anemia
Peripheral blood findings in microangiopathic hemolytic anemia.  DIC is a clinical and laboratory diagnosis, not
blood findings in microangiopathic ... hemolytic anemia ... Microangiopathic ... hemolytic anemia ... #hemolytic #anemia
Causes of Hemolytic Anemia - Differential Diagnosis
Inherited
 • Membrane
 • Internal
    - Hemoglobin
Causes of Hemolytic Anemia ... Environment - Microangiopathic ... #Hemolytic #Anemia
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Mechanical Trauma (Microangiopathic ... hemolytic anemia ... - Thrombotic microangiopathy ... diagnosis #hematology #anemia
Causes of Anemia with Normal Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased WBCs
 - Decreased/NormaI
Causes of Anemia ... Fragments • Microangiopathic ... Hemolytic Anemias ... #Normocytic #Anemia
Peripheral Blood Smear Analysis
Hypochromia
Megaloblastic Anemia
Schistocytes: Microangiopathic hemolytic anemia (e.g. DIC, TTP, HUS)
Microspherocytes: Autoimmune hemolytic anemia
Sickled red
Megaloblastic Anemia ... Schistocytes: Microangiopathic ... hemolytic anemia ... Autoimmune hemolytic anemia ... interpretation #clinical #anemia
Hemolytic Anemia - Differential Diagnosis Algorithm
Hereditary:
 • Peripheral blood smear + DAT + further History
 •
Hemolytic Anemia ... → Sickle Cell anemia ... Schistocytes DAT(-) → Microangiopathic ... hemolytic anemia ... UnremarkableLab #Hemolytic #Anemia
Differential diagnosis of schistocytes / fragmentation hemolysis:
 • Thrombotic microangiopathies (TMA)
    - TTP
Drug-induced thrombotic microangiopathy ... macroangiopathic hemolytic anemia
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
particular degree of anemia ... Index < 2: • Anemia ... failure: Aplastic anemia ... Hemolysis: Autoimmune, Microangiopathic ... hemolytic anemia