94 results
Autoimmune Hemolytic Anemia (AIHA) - Differential Diagnosis Table

Warm AIHA (48-70%)
Cold AHA (16-32%)
 • Donath-Landsteiner HA (paroxysmal
Autoimmune Hemolytic ... - Differential Diagnosis ... Agglutinin Disease ... AIHA (7-8%) DAT-negative ... #Autoimmune #Hemolytic
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... (e.g. primary cold ... agglutin disease ... e.g. sickle cell disease ... #differential #diagnosis
Autoimmune Hemolytic Anemia (AIHA) Pathophysiology - Warm vs Cold AIHA
Warm AIHA:
 - 70%; IgG mediated
 -
Autoimmune Hemolytic ... C3 positive or negative ... mediated - DAT: IgG negative ... AIHA #Autoimmune #Hemolytic ... Pathophysiology #diagnosis
Expected DAT Results in Autoimmune Hemolysis
DAT Negative Hemolysis
 • DAT Poly ( - ), IgG (
in Autoimmune Hemolysis ... DAT Negative Hemolysis ... , C3d ( +/- ) Cold ... agglutinin disease ... #hematology #diagnosis
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
- Differential Diagnosis ... Algorithm Extravascular ... Warm AIHA • Cold ... #Differential #Diagnosis ... #Algorithm #Causes
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
- Differential Diagnosis ... Algorithm • Sickle ... Agglutination - Cold ... #Differential #Diagnosis ... #Algorithm #workup
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Disease 3 Types ... Diagnosis: • hemolytic ... for anti-C3d and negative ... • Compensated hemolysis ... #hemolytic #anemia
Hemolytic Anemia - Differential Diagnosis Algorithm
Hereditary:
 • Peripheral blood smear + DAT + further History
 •
- Differential Diagnosis ... Algorithm Hereditary ... malignancy, autoimmune disease ... #Differential #Diagnosis ... #Algorithm #causes
Pulmonary Function Testing (PFT) Interpretation Algorithm

Restrictive Lung Disease:
 • Chest wall or neuromuscular disorders
 • Interstitial
Interpretation Algorithm ... Emphysematous COPD ... Interpretation #Algorithm ... #diagnosis #asthma ... #COPD
Pulmonary Function Tests (PFTs) - Interpretation Algorithm
 • Normal
 • Pulmonary Hypertension, Anemia, Carboxyhemoglobinemia
 • Chest
Interpretation Algorithm ... Interstitial Lung Disease ... Non-Emphysematous COPD ... Emphysematous COPD ... #diagnosis