9 results
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... - CHAMPS Mnemonic ... , type 1 (50%-80% ... S - Systemic Lupus ... Hypocomplementemia #Low #Complement
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... staining): • Low Complement ... Post-strep GN, Lupus ... Idiopathic • Normal Complement ... differential #diagnosis #algorithm
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
antigen, leading to complement ... Complement activation ... Post-streptococcal glomerulonephritis ... , and systemic lupus ... #Classification
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Allergen-specific lgE causes ... they activate complement ... Post-streptococcal glomerulonephritis ... , Systemic lupus ... allergy #table #classification
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... Skin ulcers - Glomerulonephritis ... • Low serum C4 complement ... (e.g. systemic lupus ... #classification
Recommended initial testing for patients being evaluated for glomerular disease 

24-hour urine collection - Quantify proteinuria.
SPEP+free light chains ... or alternative complement ... infections are common causes ... cryoglobulinemias (types ... workup #diagnosis #glomerulonephritis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... inflammation Others: • Lupus ... such as systemic lupus ... against MPO • Complement ... #rheumatology #classification
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
anti-Smith Ab, low complements ... Skin Disease Classification ... Kikuchi disease • Type-I ... pneumonitis • Diffuse ... enteropathy, and diffuse
Causes of Hyperkalemia
l. Pseudohyperkalemia
  A Cellular efflux; thrombocytosis, erythrocytosis, leukocytosis, in vitro hemolysis
  B.
Causes of Hyperkalemia ... diseases: syßtemic lupus ... Pseudohypoaldosteronism type ... High #Potassium #Classification ... #Causes