23 results
Drugs affecting the cardiac action potential. The sharp rise in voltage ("0") corresponds to the influx
Drugs affecting ... to the sodium-channel ... repolarizing eflux of potassium ... #Pathophys #Pharmacology ... Antiarrhythmics #Classes
Antiarrhythmic Drugs

CLASS IA
 • Procainamide, Quinidine, Disopyramide
CLASS 1B
 • Lidocaine, Mexiletine
CLASS 2
 • Propranolol, Esmolol
CLASS 4
Antiarrhythmic Drugs ... CLASS IA • ... Adenosine, Magnesium, Potassium ... #Medications #Classes ... Classification #Pharmacology
Drugs that Impair Renal Potassium Excretion 

Decreased ENaC channel function: Amiloride, Triamterene, Pentamidine
Decreased Aldosterone Synthesis: Heparin,
Drugs that Impair ... Renal Potassium ... Decreased ENaC channel ... #Hyperkalemia #Pathophysiology ... #Pharmacology #
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
1 - Sodium Channel ... 3 - Potassium Channel ... Vaughan #Williams #Pharmacology ... Classification #Classes ... #pathophysiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... 3 - Potassium Channel ... Antiarrhythmics #Pharmacology ... Classification #Classes ... #pathophysiology
Common sodium channel blockers which cause QRS widening.

Anticonvulsants: 
 - Carbamazepine 
Antidysrhythmics:  
 - Group
Common sodium channel ... blockers which cause ... Antimalarial drugs ... widening #ECG #EKG #Pharmacology ... #Classes
Here’s a review of the Renin-Angiotensin-Aldosterone system (RAAS)

This is a very common pathway that clinicians should
sodium, which causes ... RAAS inhibiting drug ... classes (Aliskiren ... RAAS inhibiting drugs ... ReninAngiotensinAldosteroneSystem #RAAS #Pharmacology
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
Mechanisms of Drug-Induced ... Heparin) • Sodium-channel ... differential #diagnosis #pathophysiology ... #pharmacology # ... potassium #medications
Class III Antiarrhythmics - Potassium Channel Blockers - Indications and Side Effects
Amiodarone
 • Suppression of VT
Class III Antiarrhythmics ... - Potassium Channel ... a-flutter (when other drugs ... #Channel #Blockers ... #pharmacology #
Drug-Induced Edema
Drug-induced edema is caused by many drugs & can coincide with or worsen pre-existing peripheral
Drug-Induced Edema ... is caused by many ... Edema #Medication #Causes ... #Differential #Pharmacology ... #Pathophysiology