4 results
Common Medications Known to Prolong QTc
Antiarrhythmics - Amiodarone, sotalol, flecainide, quinidine, dronedarone, dofetilide
Vasopressors/inotropes - Epinephrine, norepinephrine,
to Prolong QTc Antiarrhythmics ... Vasopressors/inotropes ... Medications #Causes #differential ... #diagnosis #pharmacology
Adrenoceptor Actions
α1
 • Vascular smooth muscle - Contraction
 • Genitourinary smooth muscle - Contraction
 • Intestinal
Adrenoceptor Actions ... • Heart - ↑ Inotropy ... Chronotropy and inotropy ... receptors #actions #pharmacology ... pathophysiology #comparison
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... current) causing ↓SA ... force (negative inotropy ... accpcardprn #Antiarrhythmics ... Vaughan #Williams #Pharmacology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics ... Pharmacology Summary ... current) causing ↓SA ... force (negative inotropy ... #Pharmacology #