27 results
Antiarrhythmic Medications - Vaughan Williams Classification - Summary Table
Class I agents - Sodium Channel Blockers⠀
Class II
Antiarrhythmic Medications ... BlockersClass ... Blockers Class ... BlockersClass ... Summary #Table #pharmacology
Antiarrhythmics - Sodium Channel Blockers
Subclasses, Mechanisms, Indications, Side Effects
la - Quinidine, Procainamide
lb - Lidocaine, Mexiletine
Ic -
Blockers Subclasses ... , Mechanisms, Indications ... #Blockers #ClassI ... #Na #cardiology ... #pharmacology #
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
Heparin) • Sodium-channel ... • Exogenous (KCL ... #hyperkalemia #differential ... pathophysiology #pharmacology ... #potassium #medications
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Blockers: • MOA ... 2 - Beta Blockers ... inotropy) ACCP Cardiology ... Vaughan #Williams #Pharmacology ... pathophysiology #cardiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics Pharmacology ... Blockers: • MOA ... 2 - Beta Blockers ... Blockers: • MOA ... Antiarrhythmics #Pharmacology
Drugs causing hyperkalemia
 • Impaired release of renin: NSAIDs, Beta blockers, Cyclosporine, tacrolimus, Diabetes, Elderly
 •
: NSAIDs, Beta blockers ... Ketoconazole • Sodium Channel ... Blockers: Triamterene ... #hyperkalemia #medications ... #causes #differential
Common sodium channel blockers which cause QRS widening.

Anticonvulsants: 
 - Carbamazepine 
Antidysrhythmics:  
 - Group
Common sodium channel ... widening #ECG #EKG #Pharmacology ... #Medications #Toxicology ... #Diagnosis #Differential ... #Drugs #Classes
Lidocaine HCl - sodium channel blocker. Local anesthetic and class 1B antiarrhythmic. Originally developed in 1943
Lidocaine HCl - ... sodium channel blocker ... anesthetic and class ... #Pharmacology #Lidocaine
Potassium Channel Blockers - Medications
1. Cardiovascular Drugs
2. Psychiatric drugs
3. Other drugs
4. Synthetic opioids: Levomethadyl 
5. Opium
Potassium Channel ... Blockers - Medications ... ChannelBlockers #Medications ... #Differential # ... Diagnosis #Pharmacology
Class III Antiarrhythmics - Potassium Channel Blockers - Indications and Side Effects
Amiodarone
 • Suppression of VT
Class III Antiarrhythmics ... - Potassium Channel ... Blockers - Indications ... #Blockers #pharmacology ... #cardiology