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Thrombotic Microangiopathies In Systemic Lupus Erythematosus

Dr. Laurent ARNAUD @Lupusreference

#TMAs #Thrombotic #Microangiopathies #Systemic #Lupus #Erythematosus #SLE #hematology
Erythematosus #SLE ... #hematology #rheumatology ... #differential # ... diagnosis #causes
ANA Patterns and Associated Rheumatic Diseases:
 • Homogeneous: Systemic lupus erythematosus (SLE), Mixed connective tissue disease
erythematosus (SLE ... erythematosus (SLE ... Kumfer @AnnKumfer #Antinuclear ... ANA #patterns #rheumatology ... #diagnosis #differential
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Diagnosis and Management ... Cytopenia: Common • Immunologic ... Positive in 60-80% of cases ... Usual therapeutic management ... #Summary #rheumatology
Antinuclear Antibody Testing - Nuclear and Cytoplasmic Patterns
Nuclear Patterns:
 • Homogeneous pattern: 
   -
Antinuclear Antibody ... Scl70 (in some cases ... ARUPLabs #ANA #Antinuclear ... Cytoplasmic #Patterns #differential ... #diagnosis #rheumatology
Systemic Lupus Erythematosus - Summary
Antinuclear (ANA) - 95% - Initial screening test
Anti-dsDNA - 50%
 • Associated
Erythematosus - Summary Antinuclear ... • Specific for SLE ... Erythematosus #SLE ... Summary #diagnosis #rheumatology ... #management
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
drug-dependent) • Immunologic ... Cytopenia: Common • Immunologic ... Usual therapeutic management ... comparison #table #rheumatology ... #diagnosis #management
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
ANA (Antinuclear ... in drug-induced SLE ... seen in 30—70% of cases ... Jcortesizaguirr #ANA #Antinuclear ... antibodies #diagnosis #rheumatology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... - Differential ... Autoimmune • ITP • SLE ... Diagnosis #Algorithm #Causes ... #Hematology
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Antinuclear Antibodies ... erythematosus (SLE ... Kumfer @AnnKumfer #Antinuclear ... ANA #patterns #rheumatology ... #diagnosis #differential
Hydroxychloroquine Serum Measurement in SLE
 • Terminal elimination half-life = 40 days ([HCQI reflects long-term intake)
Measurement in SLE ... • Special cases ... #Measurement #SLE ... #rheumatology # ... levels #lupus #management