Certified Cardiovascular Technician Practice Exam

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What condition is Quinidine primarily used to treat?

Paroxysmal supraventricular tachycardia
Hypertension
Myocardial infarction
Congestive heart failure

The correct answer is: Paroxysmal supraventricular tachycardia

Quinidine is primarily used to treat paroxysmal supraventricular tachycardia because it is classified as a Class IA antiarrhythmic agent. This medication works by blocking sodium channels, which helps to stabilize the cardiac membrane and slow down the conduction of electrical impulses in the heart. By doing so, Quinidine can effectively restore normal heart rhythm in patients who experience rapid heartbeats originating from the atria, such as in the case of paroxysmal supraventricular tachycardia. Its effectiveness in addressing this specific arrhythmia is well-established, making it a preferred choice in this context. Other conditions listed, such as hypertension, myocardial infarction, and congestive heart failure, require different classes of medications to manage their respective pathophysiologies effectively. Hence, Quinidine is not suitable for those conditions.