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    The Principal Action Common to All Class I Antiarrhythmic Drugs
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The Principal Action Common to All Class I Antiarrhythmic Drugs

Question 2

Question 2

Multiple Choice

The principal action common to all class I antiarrhythmic drugs is:


A) Na+ channel blockade
B) K+ channel opening
C) Depression of impulse conduction
D) Prolongation of effective refractory period

Correct Answer:

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