11 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Molecules • Ex: Antibiotic ... thrombocytopenia, Autoimmune Hemolytic ... anemia, Penicillin-induced ... Stevens-Johnson Syndrome ... #Diagnosis #Definitions
Types of hypersensitivity reactions

Type I - lgE-Mediated, Within I Hour (Anaphylaxis)
Type II - IgG or IgM
I - lgE-Mediated ... Hours to Days (Hemolytic ... Anemia) Type ... Classification #Allergy ... #Diagnosis
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... anemia): ... ) - HELLP syndrome ... uremic syndrome ... Drugs (Beta lactam antibiotics
Penicillin Allergy Pathway for Antibiotic Prescription in Patients With Penicillin Allergy
Mild Reaction - Itching, Minor rash
Pathway for Antibiotic ... I (lgE-Mediated ... , Hemolytic anemia ... #Pathway #Antibiotics ... #Prescription #algorithm
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
hematology for workup ... blood loss, Acute hemolysis ... , deficiency anemia ... Kawasaki, Nephrotic syndrome ... post-splenectomy, Exercise, Allergic
Myelodysplastic Syndromes (MDS)

What?
Myelodysplastic syndromes are a group of disorders caused by blood cells that are poorly
formed or don’t work ... isoniazid) • Antibiotics ... One blood cell type ... Workup: • Complete ... #diagnosis #hematology
Algorithm for the evaluation of macrocytic anemia. (RBC = red blood cell; MMA = methylmalonic acid.)
Physicians
Algorithm for the ... Hemorrhage or hemolysis ... of vitamin B12 are ... #Diagnosis #Macrocytosis ... #Workup #AAFP
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... • NSAIDs • ACE ... Beta blockers • Antibiotics ... - Tumor lysis syndrome ... Failure • SLE • Type
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... • NSAIDs • ACE ... Beta blockers • Antibiotics ... - Tumor lysis syndrome ... Failure • SLE • Type
Lactic Acidosis - Differential Diagnosis Framework

Type A: Impaired O2 Delivery (DO2)
 • Decreased O2 Delivery: Hypotension
Shock, Severe Anemia ... Ischemia, Compartment Syndrome ... Beta-Agonists, ↑ work ... • Presents as AG ... in Short Bowel Syndrome