14 results
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology ... of Hypocomplementemic ... antibiody -> Immune Complex ... Formation - Complement ... > Incr Immune Complex
Algorithm for the differentiation between simple and complex febrile seizures. Guidelines for evaluation of each. #Diagnosis
Algorithm for the ... between simple and complex ... FebrileSeizure #Fever ... #Workup #Simple ... #Complex
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
three primary pathophysiologic ... causes differentiated ... immunofluorescence Immune Complex ... staining): • Low Complement ... differential #diagnosis #algorithm
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
Causes of Extravascular ... Differential Diagnosis Algorithm ... perfringens - Complement-Mediated ... Drug-induced immune-complex ... #Causes #Hematology
Chronic Cough - Differential Diagnosis Algorithm
Red Flags:
 • Fever, night sweats, chills (infection)
 • Weight loss,
Differential Diagnosis Algorithm ... Red Flags: • Fever ... bronchoscopy to complete ... Differential #Diagnosis #Algorithm ... #causes
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Allergen-specific lgE causes ... Anaphylaxis, Hay fever ... Antigen-antibody complex ... Antigen-antibody complexes ... they activate complement
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
, seasonal hay fever ... antigen, leading to complement ... Antigen-antibody complexes ... Complement activation ... Classification #Pathophysiology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tracts Immune Complex ... tract, and often causes ... Coronary arteries - Fever ... Vasculitis: • Fevers ... against MPO • Complement
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Differential Diagnosis Algorithm ... Red Flags: • Fever ... deficiency Work ... Up: • Complete
Hypochloremia - Differential Diagnosis Algorithm

Cause - Decreased Intake:
 • Low salt in diet
 • Exclusive D5W
Differential Diagnosis Algorithm ... Cause - Decreased ... homeostasis is complex ... Differential #Diagnosis #Algorithm ... #Pathophysiology