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Q. |
The most significant feature of the antiarrhythmic action of is: |
A. | Suppression of phase-4 depolarization in ventricular ectopic foci |
B. | Prolongation of action potential duration |
C. | Prolongation of effective refractory period |
D. | Depression of membrane responsiveness |
Answer» A. Suppression of phase-4 depolarization in ventricular ectopic foci |
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