14 results
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
When the specific allergen ... antigen, leading to complement ... Complement activation ... Hypersensitivity #Types #Classification ... Diagnosis #Reactions #Table
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Summary table of ... antigens, leading to complement ... they activate complement ... reactions #types #allergy ... #table #classification
Causes of ileitis beyond Crohn’s disease and infections include systemic disorders -spondyloarthropathies, vasculitides, ischemia, and amyloidosis
See below for table ... helpful paper complements ... of our GI fellow ... PMC2914216/ #Diagnosis #GI ... #Differential #Table
Additional Modalities for Workup of GI Bleed (Other than EGD + Colonoscopy)

Pill endoscopy
 • Able to
endoscopy • Able ... Enterography • Able ... • Therapeutic, able ... endoscopy • Able ... gastroenterology #table
Shock - Differential Diagnosis by Classification

Hypovolemic (Intravascular volume depletion)
 - Hemorrhagic 
   • Trauma
Differential Diagnosis by Classification ... Trauma • GI ... Differential #Diagnosis #Classification ... #Table #CriticalCare
Bedside Classification of Shock

Hypovolemic shock 

- Vomiting, diarrhea, overdiuresis 

- Hemorrhage (GI, peritoneal, RP) 

Distributive shock
Bedside Classification ... - Hemorrhage (GI ... CM #Shock #Classification ... Cardiogenic #Comparison #Table
Lower GI Bleed - Management Algorithm

Suspected lower GI bleeding (LGIB):
 • Hematochezia 
 • Melena +
Lower GI Bleed - ... Management Algorithm ... Colorectal cancer Unstable ... bleed) vs Stable ... GIBleed #management #Algorithm
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
- Anorexia GI ... Low #Potassium #Table ... #Classification
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Mechanism Decreased GI ... hypomagnesemia Excessive GI ... Low #Magnesium #Table ... #Classification
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... neuropathy - GI ... against MPO • Complement ... #rheumatology #classification