Question

Medication used for re-entrant or scar-mediated ventricular arrhythmias and would not be expected to be effective in preventing RVOT VT

Answer 1

Potassium channel blockers, like amiodarone and procainamide, are medications used to treat abnormal electrical activity in the heart. They primarily affect the repolarization phase of action potentials.

Step-by-step explanation:

Potassium channel blockers, such as amiodarone and procainamide, are medications used to treat abnormal electrical activity in the heart, known as cardiac dysrhythmia. These medications impede the movement of K+ through voltage-gated K+ channels. In terms of action potentials, potassium channels primarily affect the repolarization phase.