4 results
Calcium Channel Blockers - Dihydropyridines vs Non-Dihydropyridines
Dihydropyridines (amlodipine, felodipine, nifedipine, nicardipine)
 • SVR: Decrease
 • Inotropy:
Calcium Channel Blockers ... SVR: Decrease • Inotropy ... SVR: Decrease • Inotropy ... NonDihydropyridines #pharmacology ... #comparison #table
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
Sodium Channel Blockers ... CLASS 2 - Beta Blockers ... current) causing ↓SA ... force (negative inotropy ... Vaughan #Williams #Pharmacology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... Sodium Channel Blockers ... current) causing ↓SA ... force (negative inotropy ... Antiarrhythmics #Pharmacology