ATI RN
Learning Cardiovascular Drugs Pharmacology Questions
Question 1 of 5
This drug blocks inactivated (but not activated) Na+ channels.
Correct Answer: C
Rationale: The correct answer is C: Procainamide. Procainamide blocks inactivated Na+ channels by binding to them preferentially when they are in the inactivated state. This mechanism helps decrease excitability in cardiac and neuronal tissues. Mexiletine (A) blocks both inactivated and activated Na+ channels, making it incorrect. Phenytoin (B) primarily blocks activated Na+ channels, not inactivated ones. Quinidine (D) blocks both inactivated and activated Na+ channels, so it is not the correct choice in this scenario.
Question 2 of 5
Which of the following drugs is a class IV antiarrhythmic that is primarily indicated for the treatment of supraventricular tachyarrhythmias?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
Therapeutic dose of digoxin in a normal individual has the following effects, except
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
Select the most appropriate hypolipidemic drug for a patient with raised LDL-cholesterol level but normal triglyceride level
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
The client is taking IV heparin. The nurse will want to look out for what adverse reaction of the drug?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.