Review Practice Exercise 1

Exam Review

Practice Exercise 1

Share This Link

Share on social media

Facebook

Messager

WhatsApp

Share URL
Copy

We are excited to announce the release of a NEW VERSION OF THE SYSTEM! To benefit from the latest features, improvements, and component updates, please switch to the new system as soon as possible.

Visit Latest Version

Total Questions : 5

Showing 5 questions, Sign in for more

Question 1:

The nurse is evaluating several clients for factors that increase vulnerability to alcohol use disorder.
Which of the following factors should the nurse identify as the priority indicator of greatest lifetime risk?

A. A history of alcohol use disorder in a maternal grandparent. B. Initiation of regular alcohol consumption before 15 years of age. C. A temperament characterized by impulsivity and novelty seeking. D. Frequent attendance at social gatherings where peers consume alcohol.

Answer and Explanation

Choice A:

A maternal grandparent with alcohol use disorder is a second-degree relative, which dilutes the heritable contribution. Genetic loading is real but is far weaker than a first-degree family history. This confers lower risk than early-onset drinking. It is not the priority indicator.

Choice B:

Initiation before 15 years confers the greatest lifetime risk, raising the odds of alcohol use disorder roughly fourfold compared with onset after 21 years. Adolescent exposure interferes with maturation of prefrontal inhibitory control and dopaminergic reward pathways. This produces enduring neurobiological vulnerability that outweighs genetic, temperamental, and social factors. It is therefore the priority indicator.

Choice C:

Impulsivity and novelty seeking are heritable temperamental traits that raise susceptibility to substance use. They act as a distal predisposition rather than a direct exposure. They lack the neurodevelopmental impact and magnitude of pre-15 initiation. The risk is real but secondary.

Choice D:

Peer social gatherings represent environmental exposure and social modeling. Attendance alone, without early or heavy consumption, remains a modifiable situational factor. It carries the weakest lifetime risk among the options. It does not predict disorder independently.

Discussion Section

Posting as Anonymous or Login Here

0 Pulse Checks

No comments

Question 2:

The nurse is teaching nursing students about the hepatic metabolism of ethanol.
Which of the following substances should the nurse identify as the toxic intermediate formed when alcohol dehydrogenase acts on ethanol?

A. Acetate. B. Acetaldehyde. C. Acetic acid. D. Acetyl-coenzyme A.

Answer and Explanation

Choice A:

Acetate is generated downstream by aldehyde dehydrogenase acting on acetaldehyde. It is a relatively nontoxic product that circulates and enters peripheral metabolism. It is not the direct product of alcohol dehydrogenase. Therefore it is incorrect.

Choice B:

Acetaldehyde is the immediate product of alcohol dehydrogenase acting on ethanol. It is highly reactive and cytotoxic, forming protein and DNA adducts that drive hepatotoxicity. Its accumulation causes the flushing reaction seen when aldehyde dehydrogenase is inhibited. It is therefore the toxic intermediate.

Choice C:

Acetic acid is the protonated form of acetate and, like acetate, is a downstream nontoxic species. It does not form directly from ethanol oxidation by alcohol dehydrogenase. It lacks the reactive toxicity of acetaldehyde. Therefore it is incorrect.

Choice D:

Acetyl-coenzyme A is a terminal metabolite formed several steps later from acetate. It enters the citric acid cycle and lipogenesis as normal fuel. It is neither toxic nor the alcohol dehydrogenase product. Therefore it is incorrect.

Discussion Section

Posting as Anonymous or Login Here

0 Pulse Checks

No comments

Question 3:

The nurse is explaining why benzodiazepines are selected to manage the physiological effects of abrupt alcohol cessation.
Which of the following concepts best accounts for the therapeutic effectiveness of these agents?

A. Cross-tolerance between alcohol and other central nervous system depressants. B. Up-regulation of dopamine within the mesolimbic reward pathway. C. Induction of the microsomal ethanol-oxidizing system. D. Potentiation of N-methyl-D-aspartate (NMDA) receptor activity.

Answer and Explanation

Choice A:

Cross-tolerance exists because alcohol and benzodiazepines both potentiate GABA-A signaling. Benzodiazepines therefore substitute at the shared inhibitory receptor when alcohol is withdrawn. This restores inhibitory tone and suppresses withdrawal hyperexcitability, preventing seizures and delirium tremens. It is the mechanism of effectiveness.

Choice B:

Dopamine up-regulation within the mesolimbic pathway underlies reward, reinforcement, and craving. It explains addictive behavior rather than the control of physiological withdrawal. It is unrelated to the GABA mechanism of benzodiazepines. Therefore it is incorrect.

Choice C:

Microsomal ethanol-oxidizing system induction accelerates hepatic ethanol clearance, contributing to metabolic tolerance. It does not describe how benzodiazepines relieve withdrawal at the receptor level. It reflects metabolic adaptation, not a therapeutic action. Therefore it is incorrect.

Choice D:

Potentiation of NMDA receptors is the opposite of the desired effect. Ethanol inhibits NMDA receptors, and withdrawal causes compensatory NMDA up-regulation and excitotoxicity. Benzodiazepines do not act on glutamate receptors. Therefore it is incorrect.

Discussion Section

Posting as Anonymous or Login Here

0 Pulse Checks

No comments

Question 4:

The nurse is describing the effects of ethanol on central nervous system neurotransmission.
Which of the following actions of ethanol should the nurse include? Select all that apply

A. Potentiation of gamma-aminobutyric acid (GABA) receptor activity. B. Inhibition of N-methyl-D-aspartate (NMDA) glutamate receptors. C. Increased dopamine release within the nucleus accumbens. D. Blockade of dopamine reuptake at the synaptic cleft. E. Stimulation of acetylcholine release at the neuromuscular junction.

Answer and Explanation

Choice A:

GABA-A potentiation is the principal sedative action of ethanol. It increases chloride influx and neuronal inhibition. This mediates anxiolysis, sedation, and ataxia. It is a core central action of ethanol.

Choice B:

NMDA inhibition reduces excitatory glutamatergic transmission. This contributes to cognitive impairment, memory blackout, and, on withdrawal, rebound excitation. It is a central glutamatergic action of ethanol. It should be included.

Choice C:

Increased dopamine release in the nucleus accumbens drives the rewarding, reinforcing properties of ethanol. This mesolimbic surge underlies the development of dependence. It is the reward pathway action. It should be included.

Choice D:

Dopamine reuptake blockade at the synaptic cleft is the mechanism of cocaine and related stimulants, not ethanol. Ethanol raises dopamine by increasing release rather than blocking reuptake. This describes a different drug class. Therefore it is incorrect.

Choice E:

Acetylcholine stimulation at the neuromuscular junction is not an action of ethanol. Ethanol acts centrally and does not enhance peripheral cholinergic transmission at the motor end plate. This is physiologically inaccurate. Therefore it is incorrect.

Discussion Section

Posting as Anonymous or Login Here

0 Pulse Checks

No comments

Question 5:

The nurse is reviewing terminology related to alcohol consumption.
Which of the following statements accurately reflect these concepts? Select all that apply

A. Binge drinking raises the blood alcohol concentration to ≥ 0.08 g/dL. B. One standard drink in the United States contains approximately 14 grams of pure alcohol. C. Tolerance refers to a characteristic syndrome that emerges when alcohol intake abruptly stops. D. Craving is a strong subjective urge or desire to consume alcohol. E. Harmful use describes drinking that raises risk but has not yet caused demonstrable damage.

Answer and Explanation

Choice A:

Binge drinking is defined by a pattern that raises the blood alcohol concentration to ≥ 0.08 g/dL, typically about 5 drinks for men or 4 for women within 2 hours. It is a consumption pattern keyed to a measurable threshold. The statement is accurate.

Choice B:

One standard drink in the United States contains approximately 14 grams of pure alcohol, equal to about 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of spirits. It provides a uniform measure for quantifying intake. The statement is accurate.

Choice C:

Tolerance denotes needing progressively larger amounts to achieve the same effect, or a diminished effect from the same amount. The statement instead describes withdrawal, the syndrome emerging when intake stops. This conflates two concepts. Therefore it is inaccurate.

Choice D:

Craving is a strong subjective urge or desire to consume alcohol and is a core diagnostic feature of alcohol use disorder. It reflects reward-pathway drive rather than physical dependence alone. The statement is accurate.

Choice E:

Harmful use describes a pattern that has already caused demonstrable physical or psychological damage. The described drinking that raises risk without present damage is instead hazardous use. This mislabels hazardous use. Therefore it is inaccurate.

Discussion Section

Posting as Anonymous or Login Here

0 Pulse Checks

No comments

Sign Up or Login to view all the 5 Questions on this Exam

Join over 100,000+ nursing students using Naxlex’s science-backend flashcards, practice tests and expert solutions to improve their grades and reach their goals.

Exam Review

Practice Exercise 1 Share this Share This Link Share on social media Facebook Messager WhatsApp Share URL Copy Close

Total Questions : 5

Sign Up or Login to view all the 5 Questions on this Exam

Practice Exercise 1

Share This Link

Share on social media

Facebook

Messager

WhatsApp

Share URL
Copy