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Hemolytic Anemia - Hemolysis Diagnostic Workup

Infographic by: Howard Ong

#Hemolysis #Hemolytic #Anemia #Algorithm #MAHA #TTP #Diagnosis #Workup
Hemolytic Anemia ... #Hemolytic #Anemia ... #Algorithm #MAHA ... #TTP #Diagnosis ... #Workup #Hematology
Hemolysis - Diagnostic Algorithm and Causes

Increased red cell production: 
 • Increased Reticulocytosis/polychromasia 
 • Erythroid
Hemolysis - Diagnostic ... Algorithm and Causes ... haptogbbulin #Hemolysis ... #Hemolytic #Anemia ... #Causes #Workup
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Framework for Hemolysis ... Intravascular Hemolysis ... thrombocytopenic purpura (TTP ... ), Hemolytic uremic ... ) (e.g. lupus, CLL
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
Intravascular Hemolysis ... and RES-mediated hemolysis ... Intravascular - Hemolysis ... immune-complex hemolytic ... #Causes #Hematology
Hemolytic Anemia - Differential Diagnosis Algorithm
Hereditary:
 • Peripheral blood smear + DAT + further History
 •
Hemolytic Anemia ... Immune mediated hemolysis ... Microangiopathic hemolytic ... anemia (TTP, HUS ... UnremarkableLab #Hemolytic
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Hemolytic Anemia ... thrombocytopenia - DIC, TTP ... elliptocytosis, autoimmune hemolysis ... ARUPConsult @ARUPLabs #Hemolytic ... #workup #hematology
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
hemorrhage and hemolysis ... intravascular hemolysis ... out an immune hemolytic ... the severity of hemolysis ... #Hematology
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
Algorithm for the ... Hemorrhage or hemolysis ... the most likely cause ... recovery also causes ... #Workup #AAFP
Anemia Diagnostic Algorithm

Mean corpuscular (cell) volume (MCV): Average RBC size. Under 80 = microcytic. Between 80-95
Anemia Diagnostic ... Algorithm Mean ... corpuscular (cell ... acute blood loss, hemolysis ... #Workup #Hematology
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
to impaired B-cell ... and autoimmune hemolytic ... anemia) • Systemic ... DDX - Other causes ... hypogammaglobulinemia #immunology #hematology