14 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
Atrial Fibrillation Overview

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

1. Why?
Cardiac:
• Valvular heart disease
•
Atrial Fibrillation ... Palpitations, light-headedness ... Rate Control • ... Anticoagulation #Atrial #Fibrillation ... #Cardiology #Management
Antiarrhythmics - Vaughan Williams Classification:
CLASS 1 - Sodium Channel Blockers:
 • MOA: Block fast Na+ channels
Antiarrhythmics ... Vaughan #Williams #Pharmacology ... Classification #Classes ... #pathophysiology ... #cardiology
Acute Atrial Fibrillation - Initial Options for Rate Control
Diltiazem IV
 •  Rapid onset and rapidly
Acute Atrial Fibrillation ... IV bolus can cause ... • Does not cause ... #pharmacology #management ... #cardiology #AFib
Atrial Fibrillation (A-Fib) Summary

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

Why?
Cardiac:
	• Valvular heart
Atrial Fibrillation ... Palpitations, light-headedness ... electrical) • Antiarrhythmic ... AFib #diagnosis #management ... #cardiology
Antiarrhythmics Pharmacology Summary
Cardiac Conduction Phases:
Phase 0 - Ventricular Depolarization:
 • Na+ channels open leading to a
Antiarrhythmics ... Pharmacology Summary ... #Pharmacology # ... #pathophysiology ... #phases #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Treat underlying cause ... Probable atrial fibrillation ... Treat underlying cause ... Tachycardia #Treatment #management ... #cardiology #algorithm
Widened Pulse Pressure - Differential Diagnosis and Pathophysiology

Pulse pressure is the difference between the systolic blood
Diagnosis and Pathophysiology ... developing atrial fibrillation ... developed atrial fibrillation ... at a rate of 23.3% ... #causes #cardiology
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Diagnosis and Management ... • Most common cause ... Lung Abscess Pathophysiology ... degrees • Chills, night ... CXR upright or lat
RA/CVP Waveform Interpretation

Central venous pressure (CVP) or right atrial pressure (RAP) waveform tracings can often times
pressure (CVP) or right ... lost in atrial fibrillation ... “cannon waves” caused ... filling of RA in late ... Interpretation #Diagnosis #Cardiology