Term
| What are the classifications for antiarrhythmic drugs? And what is the main difference b/w these? |
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Definition
1a, 1b, 1c, II, III IV
Class 1 = have something to do with Na+
Class II = B blocker
Class III = K+
Class IV = Ca++ |
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Term
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Definition
Slow conduction velocity
Prolong refractoriness
Decrease the autonomic properties of sodium-dependant conduction tissue
Intermediate “on/off” activity
Not widely used due to risk of toxicity
Quinidine = Diarrhea, headache, Torsades de pointe
Procainamide = Lupus-like syndrome
Disopyramide = exacerbate heart failure, Anticholinergic effects
**Very broad spectrum (for atrial and ventricular arrhythmias) |
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Term
| Which medication class is most recommended for A-Fib or A-Flutter? |
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Definition
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Term
| Type IV antiarrhytmic drugs, inhibit what ion? Which slows ___ & prolongs ___? |
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Definition
| They inhibit Ca2+ ions from going into the myocardial cell, which slows conduction & prolongs the refractory period. |
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Term
| What drug has been recommended as first choice in pt's with PSVT? |
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Definition
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Term
| For ventricular proarrhythmia, what often causes it, and what 2 drugs may help? |
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Definition
| It is often caused by Type Ia and/or Ic antiarrhythmic drugs, and lidocaine or sodium bicarbonate may have success. |
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Term
| What is the drug of choice for Torsade de Pointe? |
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Definition
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