ATI RN
Pharmacology ATI Test Bank Questions
Question 1 of 5
Which pain theory is based on the existence of a specific pain system?
Correct Answer: D
Rationale: The specificity theory of pain proposes that there is a specific pain system in the body that is responsible for detecting and transmitting pain signals. According to this theory, specific pain receptors exist that are sensitive only to pain stimuli and are separate from other sensory receptors for touch, temperature, or pressure. When tissue damage or injury occurs, these pain receptors are activated, and they send signals through specific pain pathways to the brain, resulting in the sensation of pain. The specificity theory suggests that pain is a distinct sensory modality with its own dedicated system, separate from other sensory modalities.
Question 2 of 5
A patient with a history of malaria who is being treated with chloroquine is in the clinic for a follow-up visit. What should the nurse advise the patient to do?
Correct Answer: A
Rationale: Chloroquine can cause retinopathy, so patients should be advised to report any visual changes promptly. Taking the medication with milk is not necessary. Sunlight avoidance is not specifically required for chloroquine, though it may cause photosensitivity in some patients. Increasing fluid intake is not a specific recommendation for chloroquine use.
Question 3 of 5
A 75-year-old male patient was admitted to the unit with angina. He was started on nadolol (Corgard). The patient asks why he is taking this medication because he does not have high blood pressure. What is the nurse’s best response?
Correct Answer: A
Rationale: Decreased heart rate, contractility, and excitability, as well as a membrane-stabilizing effect, lead to a decrease in arrhythmias, a decreased cardiac workload, and decreased oxygen consumption. The juxtaglomerular cells are not stimulated to release renin, which further decreases the blood pressure. These effects are useful in treating hypertension and chronic angina and can help to prevent reinfarction after a myocardial infarction by decreasing cardiac workload and oxygen consumption. Corgard will not prevent blood pressure problems, arrhythmias, or glaucoma in the future. Corgard is not used to treat BPH.
Question 4 of 5
The nurse noted a patient's heart rate decreasing from 45 to 38 while administering atropine 0.3 mg IV. What is the most likely explanation?
Correct Answer: D
Rationale: Atropine is a parasympatholytic drug that blocks the action of the vagus nerve on the heart, typically increasing heart rate. However, in rare cases, atropine can cause an initial paradoxical slowing of the heart rate before the expected increase. This occurs because atropine may initially stimulate the vagus nerve at low doses before blocking its effects. The dose of 0.3 mg IV is relatively low, which could explain this phenomenon. The other options are incorrect because atropine does not stimulate the vagus nerve (A), the dose is not necessarily too low (B), and adenosine is not indicated for bradycardia (C).
Question 5 of 5
A patient has been on TPN for 1 month, and there is an order to discontinue TPN tomorrow. The nurse contacts the health care provider because sudden interruption of TPN therapy may cause which condition?
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.