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3 Cards in this Set
- Front
- Back
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What they do...
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Decrease K+ efflux during repolar.
Prolong repolar. - extend effective refractory period Prototype: was bretyllium tosylate (Bretylol) but now amiodarone (Codarone) most common |
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amiodarone (Cordarone)
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Class: Antidys - Class III, K+ chan. block
Mech of action:Prolongs duration of action potential / refractory period w/out effecting resting potential; relaxes smooth muscle = vasodilation in coronary arteries; antianginal & sympatholytic properties Indications: All tachydys. (works on anything) Contraindication: bradycardia |
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bretylium (Bretylol)
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Class: Antidys (Class III - K+ chan blocker)
Mech of action: prolong depolarization period & refractory period |
