1033 results
Warm Antibody Autoimmune Hemolytic Anemia 
1) DIAGNOSE AIHA
 • Anemia: macrocytic > normocytic, ↑ reticulocytes
 •
Antibody Autoimmune Hemolytic ... normocytic, ↑ reticulocytes ... • Hemolysis: ... type ± C3d • Blood ... Antibody #Autoimmune #Hemolytic
Anemia Diagnostic Algorithm

Mean corpuscular (cell) volume (MCV): Average RBC size. Under 80 = microcytic. Between 80-95
Reticulocyte count ... in peripheral blood ... High in acute blood ... loss, hemolysis ... Corrected reticulocyte
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
Reticulocyte Production ... the peripheral blood ... > 3: • Acute blood ... Retroperitoneal, Uterine • Hemolysis ... Microangiopathic hemolytic
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
(RBC = red blood ... peripheral smear, a reticulocyte ... specifically order a reticulocyte ... Hemorrhage or hemolysis ... elevation in the reticulocyte
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Hemolysis - Differential ... - Peripheral Blood ... abnormal RBCs - Reticulocyte ... Urobilinogen #Hemolysis
Red Blood Cell (RBC) Morphology Atlas
 • Microcytic - Iron-deficiency anemia, Thalassemia, Sideroblastic anemia, Lead poisoning
Red Blood Cell ( ... syndrome, Increased reticulocyte ... spherocytosis, Hemolytic ... Schistocytes - Hemolytic
Laboratory Testing in Hemolytic Anemia

Intravascular vs Extravascular Hemolysis
Reticulocytes
Unconjugated bilirubin
LDH
Peripheral smear
Haptoglobin
Urine hemosiderin
Urine hemoglobin
Carboxyhemoglobin

#Hemolytic #Anemia #Laboratory #Testing #workup
Laboratory Testing in Hemolytic ... Extravascular Hemolysis ... Reticulocytes ... Carboxyhemoglobin #Hemolytic ... diagnosis #hematology #hemolysis
Hemolytic Anemias - Differential Diagnosis Algorithm

Signs of anemia and hemolysis:
 • ↓ Haptoglobin
 • ↑ LDH
Hemolytic Anemias ... of anemia and hemolysis ... bilirubin • ↑ Reticulocytes ... Immune-mediated Hemolysis ... • Autoimmune Hemolytic
Calculating a Reticulocyte Index (RI)
Reticulocyte Index = Absolute Reticulocyte Count / Maturation Correction
Absolute Reticulocyte Count =
Calculating a Reticulocyte ... Index (RI) Reticulocyte ... Index = Absolute Reticulocyte ... Count = % of reticulocytes ... SatyaPatelMD #Reticulocyte
Pancytopenia - Differential Diagnosis Algorithm
 • 12-13 g/dL,
 • ANC < 1800/uL,
 • platelet < 150,000/uL

Initial
peripheral smear, reticulocyte ... Production (↓ reticulocytes ... ↑ Destruction (hemolysis ... , ↑ reticulocytes