12 results
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Antiarrhythmics ... • Slows sinus rate ... EricsMedicalLectures/ #Antiarrhythmics ... Classification #Classes #cardiology ... #pharmacology
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... inotropy) ACCP Cardiology ... Vaughan #Williams #Pharmacology ... Classification #Classes #pathophysiology ... #cardiology
Class III Antiarrhythmics - Potassium Channel Blockers - Indications and Side Effects
Amiodarone
 • Suppression of VT
Class III Antiarrhythmics ... a-fib/a-flutter • Rate ... EricsMedicalLectures/ #ClassIII #Antiarrhythmics ... Channel #Blockers #pharmacology ... #cardiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics ... Pharmacology Summary ... #Pharmacology # ... Classification #Classes #pathophysiology ... #phases #cardiology
Approach to ECGs
Check
 - Age, gender, name
 - 25mm/s; 10mm/mV
 - 1mm = 40ms; 0.1 mV
Rate
RBBB (V1/V2 rsr', lat ... (V5/V6 rs, qs; lat ... antihistamines, antiarhythmics ... EKG #diagnosis #electrocardiogram ... #cardiology #interpretation
66 yo with syncope - Ventricular Tachycardia

This ECG shows a wide-complex tachycardia in a right bundle
tachycardia in a right ... quite fast (heart rate ... VentricularTachycardia #Clinical #Cardiology ... #ECG #EKG #Electrocardiogram
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
- Right Bundle Branch ... JTInterval #QTc #electrocardiogram ... #pathophysiology ... #ekg #ecg #cardiology
Atrial Fibrillation (A-Fib) Summary

Symptoms:
• Palpitations, light-headedness, dizziness, dyspnea, exercise intolerance, chest pain, near-syncope, syncope.

Why?
Cardiac:
	• Valvular heart
Palpitations, light-headedness ... block or WPW Rate ... sinus rhythm vs rate ... electrical) • Antiarrhythmic ... diagnosis #management #cardiology
Digoxin Pharmacology and Pathophysiology
1) Na/K ATPase Pump - Digoxin works by directly binding to and inhibiting
Digoxin Pharmacology ... and Pathophysiology ... Decreased heart rate ... #Pathophysiology ... #cardiology
Heart failure with Reduced Ejection Fraction (HFrEF)
Clinical Presentation
1. Typical symptoms: dyspnea, orthopnea paroxysmal noctumal dyspnea, fatigue,
Other: Electrocardiogram ... , Consider right ... endomyocardial biopsy Pharmacology ... diagnosis #management #cardiology ... #pharmacology #