175 results
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
mediated; exposure to allergen ... causes development ... of allergen-specific ... Allergic reaction ... Stevens-Johnson Syndrome
Acute Pharyngitis: Differential Diagnosis
Infectious:
 • Respiratory viruses (25-45%)
 • Group A Strep (5-15%)
 • Other bacteria:
Acute Retroviral Syndrome ... Diffuse viral syndromes ... Noninfectious: • Allergic ... PFAPA, Behcet syndrome ... Differential #Diagnosis #causes
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
of lgE Abs that bind ... leading to an allergic ... cell surfaces causes ... leading to an allergic ... causes development
Lens Dislocation on Ocular POCUS

Sudden onset blurred vision, worse looking to the right. + Marfan' Syndrome

Dr.
Dislocation on Ocular POCUS ... right. + Marfan' Syndrome ... Dislocation #Ocular #POCUS ... #clinical #ultrasound
Peri-operative Hyperthermia - Guidelines for Crises in Anaesthesia
If prolonged or ≥ 39 C this is a
maintained fever CAUSES ... transfusion • Allergic ... • Serotonin syndrome ... Anticholinergic syndrome ... #Differential #Causes
Jaundice - Differential Diagnosis Algorithm
Pre-Hepatic - Unconjugated Hyperbilirubinemia
Increased Production
 • Hemolysis
 • Ineffective Erythropoiesis
 • Hematoma
Decreased
• Gilbert's Syndrome ... Crigler-Najjar Syndromes ... Dilatation on Ultrasound ... Diagnosis #Algorithm #Causes
Ruptured Chordae Tendineae on POCUS Echocardiogram
 
Many underlying causes, not limited to: MVP, subacute endocarditis, connective
Chordae Tendineae on POCUS ... Many underlying causes ... - Arizona Ultrasound ... Chordae #Tendineae #POCUS ... Echocardiogram #Ultrasound
Differential Diagnosis of Pulmonary Eosinophilia
Infection:
 • Helminthic: Loffler syndrome (Ascaris, hookworm, Strongyloides), Tropical pulmonary eosinophilia (lymphatic
Helminthic: Loffler syndrome ... coccidioidomycosis), Allergic ... Hypereosinophilic syndrome ... Differential #Diagnosis #causes
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Mechanism of Action: Allergen-specific ... lgE causes mast-cell ... lgM antibodies bind ... reactions #types #allergy
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Causes of Secondary ... disease - Renal ultrasound ... Duplex Doppler ultrasound ... • Cushing’s syndrome ... Mineralocorticoid excess syndromes