ATI RN
Cardiovascular Drugs Therapy Questions
Question 1 of 5
Tick the drug, a derivative of pyrophosphate:
Correct Answer: A
Rationale: The correct answer is A: Foscarnet. Foscarnet is a derivative of pyrophosphate as it contains a phosphonoformic acid group that mimics pyrophosphate. This structural similarity allows foscarnet to inhibit viral DNA polymerase by binding to the pyrophosphate-binding site. Zidovudine (B), Vidarabine (C), and Acyclovir (D) are not derivatives of pyrophosphate and act through different mechanisms to inhibit viral replication. Zidovudine is a nucleoside reverse transcriptase inhibitor, Vidarabine is a nucleoside analog, and Acyclovir is a guanosine analog.
Question 2 of 5
Which of the following drugs would be appropriate to prevent delayed cerebral ischemia in a patient with blood in the subarachnoid space?
Correct Answer: A
Rationale: Verapamil is the correct choice as it is a calcium channel blocker that can help prevent cerebral vasospasm, reducing the risk of delayed cerebral ischemia in subarachnoid hemorrhage. Verapamil works by dilating blood vessels, improving blood flow to the brain. Isosorbide mononitrate (B) is a nitrate used for angina, not specifically for cerebral ischemia. Propranolol (C) is a beta-blocker and Dobutamine (D) is a positive inotrope that are not directly indicated for preventing cerebral ischemia in this context.
Question 3 of 5
A hypertensive patient has been using nifedipine for some time without untoward effects. If he experiences a rapidly developing enhancement of the antihypertensive effect of the drug, it is probably due to
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
Which of the following is used to lower blood lipid levels?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
While treating a CHF patient with cardiac glycoside, one notices that the patient's resting heart rate, which previously had been 86/min is now 40/min. This would
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.