7 results
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Post-strep GN, Lupus ... Idiopathic • Normal ... Complement: IgA ... differential #diagnosis #algorithm ... #rheumatology
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... - CRP: Usually normal ... • Immunologic Workup ... 80% - Low complement ... Management #Summary #rheumatology
Complement Deficiency Testing Algorithm
 • Normal CH50 and AH50 AND High suspicion for complement deficiency
 •
Complement Deficiency ... Testing Algorithm ... suspicion for complement ... #Deficiency #Testing ... #Algorithm #hematology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
• Immunologic Workup ... 90% - Low complement ... • Immunologic Workup ... 80% - Low complement ... comparison #table #rheumatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Differential Diagnosis Algorithm ... deficiency - Abnormal ... Autoimmune Vasculitis (lupus ... deficiency Work ... #Causes #dermatology
Antiphospholipid Syndrome (APLS) Testing - Hypercoagulable Workup Algorithm
INDICATIONS FOR TESTING:
 • Vascular thrombosis
Hypercoagulable Workup ... Algorithm INDICATIONS ... : • Lupus Anticoagulant ... #Algorithm #diagnosis ... #hematology
Drug Induced Lupus (DIL)
 • Epidemiology: -10% of all lupus cases, drug-dependent, 4:1 to 1:1 F:M
Drug Induced Lupus ... CRP - Usually normal ... • Immunologic Workup ... 90% - Low complement ... #DIL #rheumatology