Class IV Antidysrhythmics
Mechanism
Blockade of slow calcium channels
Examples
- Verapamil, Diltiazem
- primarily affect heart, "give your heart VD"
- Nifedipine
- primarily affect vessels
Primary Uses
- Dilt and verapamil:
- to control ventricle in rapid a-fib (like Class II)
- to control ventricle in SVT
