ATI RN
ATI RN Pharmacology Online Practice 2019 A Questions
Question 1 of 5
A 52-year-old overweight man steamroller operator comes to you complaining of itchy, watery eyes and runny nose in the springtime. He says that he has had this problem for as long as he can remember but does not like going to doctors. His wife finally convinced him to come today see what you might be able to do for him. You prescribe cetirizine. Which of the following describes cetirizine's mechanism of action?
Correct Answer: B
Rationale: Cetirizine treats seasonal allergies (itchy eyes, runny nose) by inhibiting H1 receptors . This blocks histamine, relieving symptoms without sedation, ideal for his job. β2 inhibition or stimulation affects airways. α1 stimulation vasoconstricts. H1 inhibition (E) isn't stimulatory. Cetirizine's action ensures efficacy and safety.
Question 2 of 5
Which of the following pharmacologic classifications does the drug propranolol fall under?
Correct Answer: A
Rationale: Propranolol belongs to the pharmacologic classification of Beta Blockers. Beta blockers work by blocking the action of adrenaline and other stress hormones, specifically by blocking beta receptors. Propranolol, in particular, is a non-selective beta blocker that is commonly used to treat conditions such as hypertension, angina, and arrhythmias. It is also used off-label for anxiety and migraine prevention.
Question 3 of 5
A prenatal patient tells the nurse that she is not taking vitamins because she heard that vitamins may cause damage to the fetus if she becomes pregnant. What is the nurse's best response?
Correct Answer: C
Rationale: While vitamins are generally beneficial during pregnancy, excessive doses (megadoses) can be harmful, especially in the first trimester. The nurse should emphasize the importance of taking vitamins at recommended levels and avoiding excessive supplementation. Taking extra vitamins (B) is not advised, and doses above the RDA (D) should be avoided unless prescribed.
Question 4 of 5
A 52-year-old overweight man steamroller operator comes to you complaining of itchy, watery eyes and runny nose in the springtime. He says that he has had this problem for as long as he can remember but does not like going to doctors. His wife finally convinced him to come today see what you might be able to do for him. You prescribe cetirizine. Which of the following describes cetirizine's mechanism of action?
Correct Answer: B
Rationale: Cetirizine treats seasonal allergies (itchy eyes, runny nose) by inhibiting H1 receptors . This blocks histamine, relieving symptoms without sedation, ideal for his job. β2 inhibition or stimulation affects airways. α1 stimulation vasoconstricts. H1 inhibition (E) isn't stimulatory. Cetirizine's action ensures efficacy and safety.
Question 5 of 5
A nurse is providing discharge instructions to a patient who is taking atenolol (Tenormin) to treat hypertension. What would the nurse teach the patient regarding a possible drug-drug interaction?
Correct Answer: C
Rationale: A decreased hypertensive effect can occur if a beta-selective adrenergic blocking agent is used in combination with NSAIDs. If this combination is used, the patient should be monitored closely and dosage adjustments made. Antibiotics, oral contraceptives, and antifungal agents are not known to have a drug-drug interaction. The nurse should educate the patient about potential interactions and advise them to consult their healthcare provider before starting any new medications.