Class 1, Phase 0 Flashcards
1
Q
Class 1a Drug names
A
“Double Quarter pounder”
Disophyramide
Quinidine
Procainamide
2
Q
Class 1b drug names
A
“W/ lettuce, mayo and tomato”
Lidocaine
Mexiletine
Tocainide
3
Q
Class 1c drug names
A
“And more fries please”
Moricizine
Flecainide
Propefanone
4
Q
What phase do these drugs affect and what happens in this phase?
A
Phase 0- Sodium ions move into cells
- These drugs block the sodium channels in the cell membrane during action potential.
- decreases depolarization, decreasing automaticity of the ventricular cells, increases ventricular fibrillation threshold.
5
Q
What is class 1 of antiarrhythmics?
A
Class 1: Block the sodium channels
