ATI RN
ATI Capstone Pharmacology Assessment 2 Questions
Question 1 of 5
Which of the following describes the action of an agonist on a receptor.
Correct Answer: C
Rationale: An agonist is a substance that binds to a receptor and triggers a biological response. By activating the receptor, an agonist mimics the action of the body's natural ligand that typically binds to the receptor. This activation may lead to a cascade of events within the cell, resulting in a specific physiological response. In contrast, antagonists block the receptor from being activated, while agonists work by binding to the receptor and initiating the desired response.
Question 2 of 5
Select all the early manifestations of lithium
Correct Answer: A
Rationale: Nausea is one of the early manifestations of lithium toxicity. It is important to monitor for this symptom in patients taking lithium to detect toxicity early and prevent more serious complications. Hypotension and renal failure are more severe manifestations of lithium toxicity that occur at later stages. Muscle weakness is not typically associated with early lithium toxicity.
Question 3 of 5
Which of the following describes the action of an agonist on a receptor.
Correct Answer: C
Rationale: An agonist is a substance that binds to a receptor and triggers a biological response. By activating the receptor, an agonist mimics the action of the body's natural ligand that typically binds to the receptor. This activation may lead to a cascade of events within the cell, resulting in a specific physiological response. In contrast, antagonists block the receptor from being activated, while agonists work by binding to the receptor and initiating the desired response.
Question 4 of 5
Which food items should the nurse advise a patient taking a monoamine oxidase inhibitor (MAOI) to avoid?
Correct Answer: C
Rationale: MAOIs (e.g., phenelzine) with tyramine-rich foods (chocolate, wine, fava beans) risk hypertensive crisis-per pharmacology-unlike juice/cheese or water/fish. Tyramine avoidance is critical, per diet.
Question 5 of 5
A 44-year-old man is found dead in his home by the police. Reports indicate that the man was heating his one-room apartment with a kerosene space heater. He was found because other people in the apartment complex that he lives at developed headache, lethargy, and confusion. What is the most likely explanation for these findings?
Correct Answer: A
Rationale: Kerosene heater use causing death and symptoms (headache, lethargy) points to carbon monoxide poisoning . CO binds hemoglobin, causing hypoxia. Pneumonia , cyanide , and silica don't fit. CO's silent lethality explains the scenario.