44 results
Warm Antibody Autoimmune Hemolytic Anemia 
1) DIAGNOSE AIHA
 • Anemia: macrocytic > normocytic, ↑ reticulocytes
 •
Antibody Autoimmune Hemolytic ... reticulocytes • Hemolysis ... type ± C3d • Blood ... smear: Differential ... management #treatment #rheumatology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Hemolytic Anemia ... - Differential ... (oroya fever), babesia ... #Anemia #Differential ... Algorithm #workup #hematology
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Differential Diagnosis ... for Hemolytic Anemia ... Bartonella, Babesia ... #Anemia #Differential ... classification #hematology
Algorithm for workup of thrombocytopenia based on observation of the peripheral blood film. 
TTP/HUS indicates thrombotic
the peripheral blood ... thrombocytopenic purpura/hemolytic ... thrombocytopenia, Hematology ... #Diagnosis #Differential
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
= (Retic %) x (Hct ... Retroperitoneal, Uterine • Hemolysis ... Microangiopathic hemolytic ... Production #Index #hematology ... #anemia #differential
Autoimmune Hemolytic Anemia (AIHA)

WARM AHA
- Primary - Idiopathics
- Secondary
Infectious
 • Viral- HIV, EBV, HCV, HEV
 •
Autoimmune Hemolytic ... Infectious • Viral- HIV ... • Parasitic- Babesia ... #Autoimmune #Hemolytic ... AIHA #Diagnosis #Differential
Causes of Thrombocytopenia - Differential Diagnosis Framework
Decreased Production:
 - Drugs (chemo, yang, sulfa, acetaminophen, NSAIDs, quinine,
Thrombocytopenia - Differential ... Parasitic: Malaria, babesia ... Antibody-mediated: ITP, HITT ... Thrombocytopenia #Differential ... Diagnosis #Framework #hematology
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
Hyperkalemia Differential ... Alwavs Repeat Blood ... while drawing blood ... ) • RBC Hemolysis ... potassium #high #pathophysiology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Platelet Count - Differential ... → Refer to hematology ... : Acute blood loss ... , Acute hemolysis ... Thrombocytosis #Platelets #Differential
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Crohns, Bechet's Micro ... Viral: HSV, EBV, HIV ... Mnemonic #Causes #Differential ... #Diagnosis #Dermatology