A Patient Is Given a Drug That Prolongs the P-R

question 7

Multiple Choice

A patient is given a drug that prolongs the P-R interval of the electrocardiogram (ECG) . What is the most likely action of the drug?

• A) Reduced conduction velocity of the atrial fibers
• B) Delayed repolarization of the ventricular fibers
• C) Reduced conduction velocity of atrioventricular (AV) nodal fibers
• D) Increased conduction velocity of the atrial fibers
• E) Increased force of contraction of the right ventricle

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Andrew Jackson

The seventh President of the United States (1829–1837), known for his populist policies and for founding the Democratic Party.