Nokea
Class of drugs derived from barbituric acid that act as CNS depressants and are used for their sedative and anti- seizure effect are known as _
- A. Antidepressants
- B. Anxiolytics
- C. Barbiturates
- D. Benzodiazepines
- G. C
Correct Answer: Antidepressants treat mood disorders. Anxiolytics reduce anxiety but aren't barbituric-derived. Barbiturates fit the description. Benzodiazepines aren't barbituric-based.
Rationale: The correct answer is C: Barbiturates. Barbiturates are drugs derived from barbituric acid, acting as CNS depressants for sedative and anti-seizure effects. Antidepressants (A) are used for mood disorders, not CNS depression. Anxiolytics (B) are for anxiety and not all are barbituric-derived. Benzodiazepines (D) are a different class of CNS depressants, not derived from barbituric acid. Therefore, choice C is the most appropriate based on the specific description provided in the question.
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Which of the following triggers the pancreas to secrete insulin?
- A. Hypoglycemia
- B. Hyperglycemia
- C. Glucagon
- D. Ketoacids
- G. B
Correct Answer: Hypoglycemia triggers glucagon, not insulin. Hyperglycemia prompts insulin release to lower blood sugar. Glucagon opposes insulin. Ketoacids indicate low glucose, not insulin trigger.
Rationale: The correct answer is B: Hyperglycemia. When blood sugar levels are high, the pancreas responds by releasing insulin to facilitate the uptake of glucose by cells, thereby lowering blood sugar levels. This is a crucial mechanism to maintain glucose homeostasis in the body. Hypoglycemia (A) triggers the release of glucagon to raise blood sugar levels, not insulin. Glucagon (C) is released in response to low blood sugar levels and opposes the action of insulin. Ketoacids (D) indicate a state of low glucose, not a trigger for insulin secretion. Therefore, the correct trigger for the pancreas to secrete insulin is hyperglycemia.
After taking the medication guaifenesin (Mucinex), the client complains of coughing up phlegm. What is the best response by the nurse?
- A. This means there is probably more pathology present.
- B. This is indicative of an allergic reaction.
- C. This requires further investigation.
- D. This is a normal response to the medication.
- G. D
Correct Answer: Guaifenesin is an expectorant that loosens mucus, making coughing up phlegm a normal response. It's not indicative of more pathology, an allergic reaction, or a need for investigation unless symptoms worsen unusually.
Rationale: Step 1: Identify the medication's action - Guaifenesin is an expectorant that helps loosen and thin mucus in the airways.
Step 2: Understand the expected response - Coughing up phlegm after taking guaifenesin is a normal response due to the medication's action.
Step 3: Evaluate the other choices - A, B, and C are incorrect because coughing up phlegm is not indicative of more pathology, an allergic reaction, or a need for further investigation in this context.
Step 4: Choose the correct response - Option G correctly acknowledges that coughing up phlegm is a normal response to guaifenesin and does not suggest any unnecessary concerns or actions.
A client taking an MAOI should be instructed to avoid which item?
- A. Large amounts of water
- B. A diet that is high in salt
- C. A diet that is high in fat
- D. Foods that contain tyramine and caffeine .
- G. D
Correct Answer: Water, salt, and fat don't interact with MAOIs. Tyramine and caffeine can cause hypertensive crises with MAOIs.
Rationale: The correct answer is D: Foods that contain tyramine and caffeine. MAOIs inhibit the breakdown of tyramine and caffeine, leading to an accumulation in the body. Tyramine can cause a dangerous increase in blood pressure known as a hypertensive crisis. Caffeine can also contribute to this effect. Large amounts of water (A), a high-salt diet (B), and a high-fat diet (C) do not interact with MAOIs in a way that poses a significant risk. Therefore, instructing the client to avoid foods containing tyramine and caffeine is crucial to prevent potential adverse reactions.
The nurse is caring for a patient who is experiencing anaphylaxis. The family asks the nurse why the patient is having difficulty breathing. The nurse responds based on what knowledge?
- A. Bronchoconstriction in response to the allergen.
- B. Compensation for a rapid fall in blood pressure.
- C. Reflex tachycardia.
- D. Seizures are likely to occur.
- G. A
Correct Answer: Bronchoconstriction from allergens causes breathing difficulty in anaphylaxis. Hypotension, tachycardia, and seizures are secondary or unrelated.
Rationale: The correct answer is A: Bronchoconstriction in response to the allergen. During anaphylaxis, the body releases histamine causing bronchoconstriction, leading to difficulty breathing. This is a direct response to the allergen and can lead to respiratory distress. Choice B, compensation for a rapid fall in blood pressure, is incorrect as hypotension is a secondary effect of anaphylaxis. Choice C, reflex tachycardia, is also incorrect as tachycardia is a compensatory response to hypotension, not the cause of difficulty breathing. Choice D, seizures are likely to occur, is incorrect as seizures are not a common manifestation of anaphylaxis. Therefore, the correct answer is A as it directly relates to the pathophysiology of anaphylaxis.
Complete the following statement: “Drugs used for the treatment of depression and a range of anxiety disorders including panic, social phobia, and post-traumatic stress disorder are known as…â€
- A. Barbiturates
- B. Rebound insomnia
- C. Antidepressants
- D. Anxiolytics
- G. C
Correct Answer: Barbiturates are sedatives. Rebound insomnia isn't a drug. Antidepressants treat depression and anxiety disorders. Anxiolytics focus on anxiety.
Rationale: The correct answer is C: Antidepressants. Antidepressants are drugs specifically designed to treat depression and various anxiety disorders, including panic, social phobia, and post-traumatic stress disorder. They work by balancing neurotransmitters in the brain to improve mood and reduce symptoms of anxiety. Barbiturates (A) are sedatives, not typically used for treating anxiety or depression. Rebound insomnia (B) is a phenomenon where insomnia worsens after discontinuing sleep medications, not a class of drugs. Anxiolytics (D) are drugs that specifically target anxiety symptoms, but they do not usually address depression. Therefore, the correct choice is C as it accurately describes the drugs used for treating depression and a range of anxiety disorders.