Verapamil

Question 1

Verapamil - Class

Answer 1

• Ca channel Blocker

Question 2

Verapamil - Action

Answer 2

• reduces myocardial O2 demand with negative inotropic/chronotropic effects
• Slows conduction and prolongs refractorieness in AV node by blocking Ca at the slow channels
• decreases automaticity of all PM cells
• Increases coronary blood flow by decreasing coronary spasm
• Relaxes vascular smooth muscle which decreases SVR

Question 3

Verapamil - Indication

Answer 3

• PSVT (narrow complex)
• HTN
• post infarction angina