ATI RN
ATI Capstone Pharmacology Assessment 2 Quizlet Questions
Question 1 of 5
Graded dose-response curves are most useful for determining
Correct Answer: A
Rationale: Graded dose-response curves plot individual response intensity to dose increases (e.g., pain relief), a pharmacodynamic tool. Population curves (e.g., ED50) suit groups, not individuals. Large or small groups aggregate data, missing individual nuance. Individual focus defines graded curves, key for tailoring therapy.
Question 2 of 5
The number of people with hypertension in the United States is estimated to be
Correct Answer: C
Rationale: The most recent data indicates that approximately 45% of adults in the United States have hypertension. With an estimated total adult population of around 230 million in the U.S., this would mean that roughly 50 million people have hypertension.
Question 3 of 5
Action of anxiolytic agents:
Correct Answer: D
Rationale: Anxiolytic agents are drugs that help relieve anxiety. Benzodiazepines are a class of drugs commonly used as anxiolytics due to their ability to enhance the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits brain activity. By increasing the inhibitory actions of GABA, benzodiazepines can produce calming and sedative effects, making them effective in treating anxiety disorders. Morphine, promethazine, atropine sulfate, and hyoscine are not typically used as anxiolytic agents.
Question 4 of 5
A 52-year-old woman with a history of recurrent urinary tract infections complains of easy bruising as well as chronic fatigue. She is maintained on daily antibiotic prophylaxis with trimethoprim. Which of the following hematologic effects is likely as a result of long-term therapy with trimethoprim?
Correct Answer: B
Rationale: Trimethoprim's folate antagonism with long-term use causes megaloblastic anemia . Bruising and fatigue reflect impaired erythropoiesis. Aplastic anemia , microcytic , normocytic , and pernicious (E) don't fit. This reversible effect requires folate supplementation.
Question 5 of 5
When administering the opioid Morphine to a patient, it is given in doses of
Correct Answer: A
Rationale: The correct dosing regimen for Morphine typically ranges from 2-5 mg every 3-4 hours as needed for pain. This dosing schedule allows for effective management of pain while monitoring for potential side effects and adjusting the dosage according to the patient's response. Options B, C, and D have dosing regimens that are not within the typical range for Morphine administration and could lead to inappropriate dosing and potential harm to the patient.