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Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
causes development ... Particular CD4+ Th cells ... harmful -> Th Cells ... macrophages, mast cells ... #Immunology #pathophysiology
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
- Mechanism of Action ... : Allergen-specific ... lgE causes mast-cell ... #types #allergy ... classification #comparison
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
, Intermediate Action ... Blockade, Fast Action ... ++ influx into cells ... Vaughan #Williams #Pharmacology ... #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... , Intermediate Action ... Blockade, Fast Action ... Antiarrhythmics #Pharmacology ... #pathophysiology
Adrenoceptor Actions
α1
 • Vascular smooth muscle - Contraction
 • Genitourinary smooth muscle - Contraction
 • Intestinal
Adrenoceptor Actions ... adrenergic #receptors #actions ... #pharmacology # ... pathophysiology ... #comparison #table