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Cardiovascular System > Drug Class: IA, IB, IC Anti-arrhythmic Drugs > Flashcards

Drug Class: IA, IB, IC Anti-arrhythmic Drugs Flashcards

1
Q

Examples of IA anti-arrhythmic drugs

A

QUINIDINE
PROCAINAMIDE
DISPYRAMIDE

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2
Q

Mode of action of IA anti-arrhythmic drugs

A

Moderate) Na+ channel blockage
- reduce amplitude of AP
- reduce conduction velocity
↑ effective refractory period

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3
Q

Side effects of IA anti-arrhythmic drugs

A

Arrhythmias

Pro-arrhythmias

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4
Q

What are IA anti-arrhythmic drugs used for

A
  • Narrow complex tachyarrhythmias
    • A fib
    • SVT
  • Ventricular arrhythmias
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5
Q

Example of IB anti-arrhythmic drug

A

LIDOCAINE

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6
Q

Mode of action of IB anti-arrhythmic drugs

A
  • Weak Na+ channel blockade

- ↓ effective refractory period

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7
Q

Example of IC anti-arrhythmic drugs

A

FLECAINIDE

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8
Q

Mode of action of IC anti-arrhythmic drugs

A
  • Strong Na+ channel blockage

- Shortens plateau phase

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Cardiovascular System (37 decks)

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