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12 Cards in this Set
- Front
- Back
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What are the 4 types of Anti-Arrhythmic drugs?
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Blockers of:
Na Ca K adrenergics |
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What are 4 Na channel blocking drugs and their classes?
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Procainamide (IA)
Quindine (IA) Lidocaine (IB) Flecainamide (IC) |
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What are two K channel blocking drugs?
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Amiadarone
Dofelitide |
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Which drugs cause torsades de pointes
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Quindine
Flecainamide Amiadarone Dofetilide |
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What is an alternative to Amiadarone and what are its benefits?
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Dronedarone
- no thyroid toxicity - shorter half-life |
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How do beta blockers work?
What is the effect? |
reduce intracellular Ca
slowed AV conduction time --> ERP --> terminate reentry |
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What does Adenosine do?
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^ K+ current
reduce Ca current --> slow AV conduction |
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What does Digoxin do?
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- block Na/K ATPase
- slow Na/Ca extruder - Ca buildup --> overload SR - spontaneous release |
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Which drugs are used primarily for:
1) SVT 2) VT |
1) adenosine & K/Ca blockers
amiodarone dofetilide diltiazem verapamil 2) Na blockers |
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What is special about Dofetilide?
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Pure K+ blocker
- acts only in heart - a-fib/flutter |
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What are 2 features of SVT on ECG?
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narrow QRS complex
no visible P-waves |
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Treatment options for arrhythmia
1) acute management 2) chronic management (2) |
1) rate control (elec/chem cardioversion)
2) a) drug therapy (BB, Ca block, IC) b) catheter ablation |
