Correct Answer: B

Rationale: Acetylcysteine is the antidote for acetaminophen overdose. It works by replenishing glutathione, a key component in detoxifying acetaminophen metabolites, thus preventing liver damage. Naloxone is used to reverse opioid overdose, not acetaminophen. Flumazenil is a benzodiazepine antidote. Activated charcoal is used to limit absorption in cases of poisoning, but it is not the antidote for acetaminophen overdose.

Correct Answer: C

Rationale: The correct solution to maintain fluid and electrolyte balance during NG tube irrigation is 0.9% sodium chloride. This solution is isotonic and helps prevent electrolyte imbalances. Using tap water or sterile water can lead to electrolyte disturbances due to their hypotonic nature, while 0.45% sodium chloride is hypotonic and may cause further imbalances in the client's electrolyte levels.

Correct Answer: B

Rationale: Acetylcysteine is the antidote for acetaminophen overdose. It works by replenishing glutathione, a key component in detoxifying acetaminophen metabolites, thus preventing liver damage. Naloxone is used to reverse opioid overdose, not acetaminophen. Flumazenil is a benzodiazepine antidote. Activated charcoal is used to limit absorption in cases of poisoning, but it is not the antidote for acetaminophen overdose.

Correct Answer: B

Rationale: In clients with dementia, restlessness and agitation are important symptoms that the nurse should address first. These symptoms can indicate underlying issues such as pain, discomfort, or unmet needs, and addressing them promptly can prevent complications. Psychosocial stressors may contribute to the client's condition but should not be the initial priority. Frequent wandering at night and urinary incontinence are also common in dementia but do not pose immediate risks compared to restlessness and agitation.

Correct Answer: C

Rationale: When caring for a client diagnosed with delirium, the most important condition for the nurse to investigate is prescription drug intoxication. Delirium in older adults is commonly caused by medication side effects or interactions. Investigating prescription drug intoxication is crucial as it can be a reversible cause of delirium. While cancer, impaired hearing, and heart failure are important considerations in overall care, prescription drug intoxication takes precedence in cases of delirium.