ATI RN
Chapter 11 Cardiovascular Drugs Test Questions Quizlet Questions
Question 1 of 5
Hyperglycemia induced by epinephrine is due to:
Correct Answer: D
Rationale: The correct answer is D because epinephrine acts on different receptors to induce hyperglycemia. Epinephrine stimulates beta2 receptors to increase gluconeogenesis and glycogenolysis, leading to elevated blood glucose levels. It also inhibits insulin secretion from alpha receptors, further contributing to hyperglycemia. Therefore, all options A, B, and C are correct mechanisms through which epinephrine induces hyperglycemia.
Question 2 of 5
Which of the following agents inhibits hepatic metabolism of hypnotics?
Correct Answer: B
Rationale: The correct answer is B: Cimetidine. Cimetidine is a cytochrome P450 inhibitor that can inhibit hepatic metabolism of drugs like hypnotics, leading to increased drug levels and potential toxicity. Flumazenil (A) is a benzodiazepine receptor antagonist, not a metabolic inhibitor. Phenytoin (C) induces hepatic enzymes, increasing metabolism of other drugs. Theophylline (D) is metabolized by cytochrome P450, but it doesn't inhibit metabolism of hypnotics.
Question 3 of 5
Adverse effect caused by phenobarbital is:
Correct Answer: D
Rationale: The correct answer is D. Phenobarbital is a barbiturate medication that can cause physical and psychological dependence, leading to addiction (Choice A). It can also exacerbate petit mal epilepsy by lowering seizure threshold (Choice B). Additionally, sedation is a common side effect of phenobarbital due to its central nervous system depressant properties (Choice C). Therefore, all of the above choices are correct, making option D the correct answer.
Question 4 of 5
Indicate a selective inhibitor of monoamine oxidase B:
Correct Answer: D
Rationale: The correct answer is D: Selegiline. Selegiline is a selective inhibitor of monoamine oxidase B (MAO-B), which helps increase dopamine levels in the brain. Levodopa is a precursor to dopamine, Amantadine is an antiviral drug used to treat Parkinson's symptoms, and Tolcapone is a COMT inhibitor. Selegiline specifically targets MAO-B without affecting MAO-A, making it the most suitable choice for selective inhibition of MAO-B in the context of Parkinson's disease treatment.
Question 5 of 5
It is undesirable to take alcohol before going outdoors when it extremely cold, but it may be harmless to take some after coming into a warm place from the cold.
Correct Answer: A
Rationale: The correct answer is A: TRUE. Alcohol consumption before going outdoors in extremely cold weather can lead to increased risk of hypothermia as it dilates blood vessels and causes heat loss. However, after coming indoors from the cold, having some alcohol may not pose the same risk as the body is already in a warm environment and can regulate its temperature better. Therefore, it is important to avoid alcohol before exposure to cold but may be harmless after being in a warm place. Choices B, C, and D are incorrect because they do not accurately reflect the specific considerations related to alcohol consumption in cold weather.