class 1 - antiarrythmia Flashcards
1
Q
What is the mechanism of class 1 antiarrythmic drugs?
A
- Block Na channels phase 0
2. Thus prevent the propogation of action potentials
2
Q
What are class 1a anti arrythmics?
A
Moderate Na+ blockage
3
Q
Name 2 class ( 1a ) anti arrythmics?
A
- Quinidine
2. Dispyramide
4
Q
What are class 1a anti arrythmics commonly used for?
A
Prevent recurrent paroxysmal AF
5
Q
What are class 1b anti arrythmics?
A
Weak Na + blockage
6
Q
Name 1 class ( 1b ) anti arrythmics?
A
IV Lidocaine
7
Q
What are class 1b anti arrythmics commonly used for?
A
Post MI for the treatment and prevention of ventricular tachycardia and VF
8
Q
What are class 1c anti arrythmics?
A
Stong Na+ blockage
9
Q
What are class 1 c drugs used to treat?
A
- Prevents paroxysmal AF
2. Recurrent tachyarrythmias associated with abnormal pathways
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