ATI RN
ATI Pharmacology Practice B Questions
Question 1 of 5
What is the maximal response a drug can produce?
Correct Answer: C
Rationale: Efficacy refers to the maximal response a drug can produce, regardless of the dose. It is a measure of how well a drug can produce its desired effect. Potency, on the other hand, refers to the amount of drug required to produce a specific effect and is not related to the maximal response. An agonist is a drug that binds to and activates a receptor. Bioavailability is the fraction of the administered dose of a drug that reaches the systemic circulation.
Question 2 of 5
The nurse reviews the patient’s medication history. Based on the patient’s prolonged use of topical corticosteroids, which assessment will the nurse include? (Select all that apply.)
Correct Answer: B
Rationale: Prolonged use of topical corticosteroids can cause thinning of the skin (B) and purpura (D) due to decreased collagen production and increased fragility of blood vessels. Weight gain (A) is associated with systemic, not topical, corticosteroid use. Erythematous lesions (C) are not typically caused by topical corticosteroids.
Question 3 of 5
A patient calls the clinic office saying that the cholestyramine (Questran) powder he started yesterday clumps and sticks to the glass when he tries to mix it. The nurse will suggest what method for mixing this medication for administration?
Correct Answer: C
Rationale: Cholestyramine (Questran) is a bile acid sequestrant used to lower cholesterol levels in the blood. To prevent clumping and sticking to the glass when mixing the powder, the nurse will suggest mixing the powder with food or fruit, or at least 4 to 6 ounces of fluid. This method helps to evenly disperse the powder and prevent clumping, making it easier for the patient to consume the medication. Mixing the powder with a carbonated soda drink (choice A) may not be suitable as the effervescence of the soda could affect the medication's stability. Adding the powder to any liquid and stirring vigorously (choice B) may not dissolve the powder effectively. Taking the powder dry on a spoon followed by a glass of water (choice E) may be difficult for the patient to swallow and may not distribute the medication evenly. Mixing with food or fluid provides a more palatable and effective method for administering Questr
Question 4 of 5
A child is admitted with a serious infection. After two days of antibiotics, he is severely neutropenic. The physician orders granulocyte transfusions for the next four days. The mother asks the nurse why? The nurse responds:
Correct Answer: D
Rationale: Granulocyte transfusions are used to temporarily increase the white blood cell count in severely neutropenic patients, particularly those with life-threatening infections. These transfusions provide functional granulocytes to help fight the infection while the patient's bone marrow recovers and begins producing its own white blood cells. This explanation is accurate and reassures the mother that the treatment is aimed at supporting the child's immune system during a critical period.
Question 5 of 5
The patient is ordered furosemide (Lasix). Before administering furosemide, it is most important for the nurse to assess the patient for allergies to which drug class?
Correct Answer: B
Rationale: Furosemide (Lasix) belongs to the sulfonamide drug class. Patients with allergies to sulfonamides may experience cross-reactivity and have an increased risk of allergic reactions to furosemide. Therefore, it is essential for the nurse to assess the patient for any allergies to sulfonamides before administering furosemide to prevent potential adverse reactions.