The mechanism of action of barbiturates differs from that of benzodiazepines in that they

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Central Nervous System Stimulants and Related Drugs NCLEX Style Questions Questions

Question 1 of 5

The mechanism of action of barbiturates differs from that of benzodiazepines in that they

A. Do not affect the GABA-benzodiazepine receptor-chloride channel complex B. Act as inverse agonists at the benzodiazepine receptor C. Increase the frequency of chloride channel opening without affecting its lifetime D. Have both GABA-facilitatory as well as GABA-mimetic actions

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

Which of the following is a GABA transaminase inhibitor?

A. Gabapentin B. Vigabatrin C. Lamotrigine D. Clobazam

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

Which of the following adverse effects of levodopa is not minimized by combining it with carbidopa

A. Involuntary movements B. Nausea and vomiting C. Cardiac arrhythmia D. On-off effect

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

What is true of risperidone?

A. It is an atypical neuroleptic which produces few extrapyramidal side effects B. It has combined dopamine D2 and 5-HT2 receptor blocking activity C. It is highly sedative D. Both (a) and (b)

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

Following analgesics are frequently employed as supplemental drugs during general anesthesia.

A. Meperidine B. Fentanyl C. Alfentanil D. All of the above

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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