Class 4, Phase 1 And 2

Question 1

What are the drug names?

Answer 1

“Very demure”
Diltiazem
Verapamil

Question 2

What happens in phase 1 and 2 and how do these drugs block these phases?

Answer 2

Phase 1- Potassium ions move out of cells
Phase 2- Calcium ions move into cells
Effect AV node. Block the movement of calcium ions across the cell membrane
Depressing the generation of action potential
Delaying phase 1 and phase 2 of repolarization
Slow conduction through the AV node

Question 3

What is class 4?

Answer 3

Block calcium channels