Which of the following drugs was most likely prescribed for the 12-year-old boy with irritability and self-injurious behavior?

Correct Answer: C

Rationale: The correct answer is C: Guanfacine. Guanfacine is commonly prescribed for children with irritability and self-injurious behavior due to its effectiveness in treating symptoms of ADHD and disruptive behavior disorders. It helps regulate impulse control and reduce aggression. Dextroamphetamine and Methylphenidate (Choices A and B) are stimulant medications primarily used for ADHD but may not directly address irritability and self-injurious behavior. Bupropion (Choice D) is an antidepressant and not typically the first choice for managing irritability and self-injurious behavior in children.

Correct Answer: D

Rationale: The correct answer is D: Morphine. Morphine is contraindicated in acute myocardial infarction due to its potential to cause hypotension and respiratory depression, which can worsen the patient's condition. Morphine can also increase myocardial oxygen demand, further compromising the patient's heart function. Rationale: - A: Amitriptyline is a tricyclic antidepressant and is not typically contraindicated in acute myocardial infarction. - B: Acetaminophen is a non-opioid analgesic and is generally safe to use in patients with acute myocardial infarction. - C: Haloperidol is an antipsychotic medication and is not typically contraindicated in acute myocardial infarction.

Correct Answer: D

Rationale: Sure! Meperidine is the most likely drug administered because it is a synthetic opioid analgesic commonly used for pain relief. It is frequently administered in healthcare settings for moderate to severe pain. Amitriptyline is a tricyclic antidepressant, Indomethacin is a nonsteroidal anti-inflammatory drug, and Fluoxetine is a selective serotonin reuptake inhibitor, none of which are typically used for immediate pain relief like Meperidine.

Correct Answer: D

Rationale: Naltrexone is the correct answer as it is an opioid receptor antagonist used to reduce alcohol cravings and dependence. It works by blocking the pleasurable effects of alcohol, helping individuals to avoid consuming it. Diazepam (A) is a benzodiazepine used for anxiety, not alcohol dependence. Clonidine (B) is an alpha-2 agonist used for hypertension, not alcohol dependence. Disulfiram (C) is an aversion therapy drug that causes unpleasant effects when alcohol is consumed, not for avoidance from dependence.

Correct Answer: D

Rationale: The correct answer is D: LSD. LSD is a hallucinogenic drug that can cause hallucinations, altered perceptions, and potentially dangerous behaviors leading to accidents or self-harm, but it does not directly cause fatal overdose. Heroin (A) is an opioid that can depress the central nervous system and cause respiratory depression leading to death. Gamma-hydroxybutyric acid (B) is a central nervous system depressant that can lead to respiratory depression and death. Ketamine (C) is a dissociative anesthetic that can cause respiratory depression and other adverse effects, but it is less likely to directly cause fatal overdose compared to heroin or GHB.