Flecainide

Definition

Flecainide is an antiarrhythmic medication classified as a Class I sodium channel blocker. It is primarily used to treat certain types of serious ventricular and supraventricular arrhythmias.

5 Must Know Facts For Your Next Test

1. Flecainide works by inhibiting the sodium channels, reducing the rate of electrical conduction in the heart.
2. It is especially effective in treating atrial fibrillation and atrial flutter.
3. Common side effects include dizziness, visual disturbances, and shortness of breath.
4. Flecainide should be used with caution in patients with a history of myocardial infarction due to its potential pro-arrhythmic effects.
5. The drug is metabolized primarily by the liver and excreted through the kidneys, so dose adjustments may be necessary for patients with hepatic or renal impairment.

Review Questions

• What class of antiarrhythmic drugs does Flecainide belong to?
• Name two types of arrhythmias that Flecainide is commonly used to treat.
• Why should Flecainide be used cautiously in patients with a history of myocardial infarction?

Related terms

Sodium Channel Blockers:

A class of antiarrhythmic drugs that inhibit sodium influx into cardiac cells.

Atrial Fibrillation:

A common type of heart rhythm disorder characterized by rapid and irregular beating.

Pro-arrhythmic Effect: The potential of some antiarrhythmic drugs to cause new or worsening arrhythmias.