Class 3 Antiarrhythmic Drugs Work by Blocking The

question 16

Multiple Choice

Class 3 antiarrhythmic drugs work by blocking the:

• A) adrenergic beta-1 receptors.
• B) influx of calcium ions during Phase 2 of the cardiac potential.
• C) influx of sodium ions during the depolarization phase.
• D) efflux of potassium ions during the repolarization phase.

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