4 results
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
, seasonal hay fever ... to complement activation ... Antigen-antibody complexes ... Complement activation ... #Classification
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
lgE causes mast-cell ... Anaphylaxis, Hay fever ... to complement activation ... Antigen-antibody complex ... #classification
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
cell surfaces causes ... antigen-surface complex ... causes development ... because T-Cell activation ... #Types #Classification
Serious Bacterial Illness (SBI):
1) UTI and pyelonephritis
Most common cause of SBI
Accounts for 3-8% of uncharacterized fevers
Female
pyelonephritis Most common cause ... Consider BCx, CSF evaluation ... (particularly complex ... Diagnosis #Peds #EM ... #Classification