Correct Answer: A

Rationale: To calculate the total dose of baclofen needed in a 24-hour period, multiply 15 mg by 3 doses, which equals 45 mg. Since the tablets are available in 10 mg strength, divide the total dose needed (45 mg) by the strength of each tablet (10 mg), which equals 4.5 tablets. Rounding off to the nearest tenth, the nurse should administer 4.5 tablets of 10 mg baclofen per day. Therefore, choice A is correct. Choices B, C, and D are irrelevant as they are not provided.

Correct Answer: A

Rationale: The correct answer is A: 'Use stool softeners regularly.' Vasovagal attacks can be triggered by straining, and using stool softeners can help prevent such attacks. Choices B, C, and D are not directly related to preventing vasovagal attacks in this context. Avoiding electromagnetic fields, maintaining a low-fat diet, or not using aspirin products are important for various health reasons but not specifically for preventing vasovagal attacks related to brady-dysrhythmias.

Correct Answer: B

Rationale: Advising the client to maintain a voiding diary is the appropriate action in this case. A voiding diary helps track symptoms and patterns essential for diagnosing conditions like benign prostatic hyperplasia or other urinary issues. Palpating the client's suprapubic area for distention (Choice A) may provide information about bladder fullness but does not address the need for tracking symptoms. Instructing the client in techniques for cleansing the glans penis (Choice C) is not relevant to the client's urinary complaints. Obtaining a urine specimen for culture and sensitivity (Choice D) may be necessary but does not directly address the client's symptoms of weak urine flow and difficulty initiating the urine stream.

Correct Answer: A

Rationale: The correct answer is A. Vomiting can lead to significant loss of magnesium, causing hypomagnesemia. In this scenario, the young adult client with intractable vomiting from food poisoning is at higher risk of developing hypomagnesemia due to the loss of magnesium through vomiting. Choices B, C, and D are less likely to present with hypomagnesemia. Hyperparathyroidism (B) is associated with hypercalcemia, renal failure (C) can lead to hypermagnesemia, and overconsumption of simple carbohydrates (D) is not directly linked to magnesium imbalances.

Correct Answer: C

Rationale: Elevated urine specific gravity indicates concentrated urine, a sign of dehydration. In this scenario, the child is showing signs of dehydration with increased stool frequency, liquid consistency, fever, and vomiting. Occult blood in the stool may indicate gastrointestinal bleeding but is not a specific sign of dehydration. Abdominal distention can be seen in various conditions and is not a specific indicator of dehydration. Hyperactive bowel sounds can be present in various gastrointestinal conditions but are not directly related to dehydration.