ATI RN
Pharmacology/Lifespan Considerations Questions
Question 1 of 5
A 23-year-old man with erectile dysfunction refuses to see a physician for his problem. Instead, he purchases an over-the-counter product that contains yohimbine. He claims that he now has improved sexual function with improved quality of his erections. What is the most likely explanation for this finding?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
A 21-year-old woman presents to the emergency department (ED) after she intentionally took 20 alprazolam 15 min ago in a suicide attempt. She has never been on benzodiazepines before in the past. The ED physician wants to reverse the effects of the alprazolam immediately. What is the most appropriate treatment?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
A 37-year-old man complains of chest pain after meals. He says this pain has gone on for a few months, and he gets only minimal relief from antacid tablets. The physician prescribes a drug that will decrease the amount of acid secreted by blocking a histamine receptor. Which of the following drugs works by this mechanism?
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
A 46-year-old woman is undergoing a laparoscopic supracervical hysterectomy for menometrorrhagia secondary to extensive leiomyomas. She is anesthetized with general anesthetic. The surgeon begins once she has lost her eyelash reflex and her breathing pattern became regular. Under which stage of anesthesia does this fall?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
A 23-year-old man with HIV infection has Pneumocystis jirovecii pneumoniTherapy is started with trimethoprim-sulfamethoxazole, and his pneumonia resolves. The pharmacotherapy was effective because of inhibition of which of the following?
Correct Answer: B
Rationale: Trimethoprim-sulfamethoxazole (TMP-SMX) treats Pneumocystis jirovecii by sequentially inhibiting folate synthesis. Sulfamethoxazole blocks PABA incorporation into folic acid, while trimethoprim inhibits dihydrofolate reductase (B), preventing tetrahydrofolate production essential for DNA synthesis in the pathogen. Cell wall synthesis is targeted by beta-lactams, not TMP-SMX. PABA incorporation is inhibited by sulfamethoxazole, but the question emphasizes the final effective step. Sterol incorporation relates to antifungals like amphotericin, and topoisomerase II (E) to quinolones.