10 results
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... glomerulonephritis (>90%) S - Systemic ... Lupus Erythematosus ... @AnnKumfer #Hypocomplementemia ... #Low #Complement
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
Systemic Lupus Erythematosus ... , oral ulcers, Lupus ... 60-80% - Low ... complement - 50 ... #lupus #Systemic
EULAR/ACR Classification Criteria for Systemic Lupus Erythematosus
Clinical Domains:
 • Constitutional domain: Fever
 • Cutaneous domain: Non-scarring
Classification Criteria for Systemic ... anticoagulant • Complement ... C3 or low C4, Low ... Classification #Criteria #SLE ... #Systemic #Lupus
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
in >90% - Low ... complement - Rare ... months to years) Systemic ... 60-80% - Low ... complement - 50
SLICC SLE Diagnostic Criteria - Systemic Lupus Erythematosus
Clinical and Immunologic Criteria

CLINICAL CRITERIA
 - ACUTE CUTANEOUS LUPUS
SLICC SLE Diagnostic ... Criteria - Systemic ... anticoagulant - Low ... complement (C3, ... #Rheumatology #SLE
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... anti-Smith Ab, low ... complements and ... , lymphopenia, low ... #Systemic #Lupus
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
inflammation Others: • Lupus ... lupus erythematosus ... against MPO • Complement ... (Low levels mixed ... vasculitis, and SLE
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
affected joint • Systemic ... lupus erythematosus ... Screening Tests for Diffuse ... Additional Tests for Diffuse ... chest wall, and low
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
activate the immune system ... factor level • Low ... serum C4 complement ... lupus erythematosus ... (SLE), rheumatoid
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
neuromuscular injury, disuse ... lupus erythematosus ... (SLE), sickle cell ... Tubulointerstitial diseases: SLE ... Drug-associated: heparin, low-molecular-weight