Several children are admitted for diagnosis with possible attention-deficit/hyperactivity disorder. Which is most important for the nurse to observe?

Correct Answer: D

Rationale: The correct answer is D: A boy with an inability to complete tasks. This is important because it is a key symptom of attention-deficit/hyperactivity disorder (ADHD). Observing this behavior can help confirm the diagnosis and guide appropriate interventions. Explanation: 1. Inability to complete tasks is a common symptom of ADHD, indicating difficulties with focus and organization. 2. Lethargy (Choice A) is not a typical symptom of ADHD, which is characterized by hyperactivity and impulsivity. 3. Lack of impulsivity (Choice B) contradicts the typical presentation of impulsivity seen in ADHD. 4. Smooth coordination (Choice C) is not a primary symptom of ADHD and does not directly relate to the disorder's diagnosis. In summary, observing a boy with an inability to complete tasks is crucial for evaluating ADHD, as it aligns with the disorder's core symptoms, unlike the other choices.

Correct Answer: C

Rationale: Mu receptors (choice C) mediate respiratory depression, a key morphine effect. Mu doesn't cause dysphoria (choice A), kappa causes dysphoria, not euphoria (choice B), and delta (choice D) isn't primarily dysphoric. This correct pairing reflects opioid pharmacology.

Correct Answer: A

Rationale: Unlike ACE inhibitors like enalapril losartan does not increase bradykinin levels reducing the risk of cough and angioedema.

Correct Answer: C

Rationale: Insomnia is a common early adverse effect of lithium therapy due to its impact on sleep patterns. Patients may experience difficulty falling asleep or staying asleep during the initial days of treatment. This side effect typically resolves as the body adjusts to the medication. Constipation, weight loss, hypertension, and edema are less commonly associated with lithium therapy in the early stages.

Correct Answer: C

Rationale: Step 1: Pyridostigmine is a medication used to treat myasthenia gravis by improving muscle strength. Step 2: Underdosing of pyridostigmine can lead to myasthenic crisis, a life-threatening condition characterized by severe muscle weakness. Step 3: Therefore, it is crucial for the nurse to include in the teaching plan that underdosing can result in myasthenic crisis to emphasize the importance of taking the medication as prescribed. Step 4: Taking pyridostigmine on time (Choice A) is important for maintaining therapeutic levels but not specifically related to the risk of myasthenic crisis. Step 5: Taking the prescribed dose every other week (Choice B) is incorrect as pyridostigmine is typically taken daily or as directed by the healthcare provider. Step 6: Overdosing of pyridostigmine can result in cholinergic crisis (Choice D), which is a complication but not