Cardiac Medications Notes

Question 1

What cardiac medications work on Phase 0 of the cardiac action potential?

Answer 1

Class 1 antidysrhythmic
(Na+ channel blockers)

1a (moderate)
-Quinidine, Procainamide

1b (weak)
-Lidocaine, phenytoin

1c (strong)
-Flecainide, Propafenone

Question 2

What cardiac medications work on Phase 2 of the cardiac action potential?

Answer 2

Class 4 antidysrhythmic
(Ca2+ channel blockers)
- Verapamil
- Diltiazem

Question 3

What cardiac medications work on Phase 3 of the cardiac action potential?

Answer 3

Class 3 antidysrthymic
(K+ channel blocker)
- Amiodarone
- Sotalol

Question 4

What cardiac medications work on Phase 4 of the cardiac action potential?

Answer 4

Class 2 antidysrthymic
(B-blocker)
- propranolol
- metoprolol

Question 5

Sympathomimetic

Answer 5

drug that producing physiological effects, sympathetic nervous system by promoting the stimulation of sympathetic nerves.