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Cardiac Subspecialty Certification (CSC) Exam

Category - Free CSC Practice Test Questions

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What are some causes of a third-degree AV block?

Certain drugs, such as quinidine and atropine
Age, digitalis intoxication, or myocardial infarction
Heart disease and damage from uncontrolled diabetes mellitus
Hypertension, coronary artery disease, and cardiomyopathy

Explanation

Answer: B - Some causes of a third-degree AV block are age, digitalis intoxication, and myocardial infarction. This is also called a complete heart block because no impulses are being transmitted from the atria to the ventricles.

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