Correct Answer: B

Rationale: Dry mucous membranes are a classic sign of dehydration. In dehydration, the body loses more water than it takes in, leading to dryness of mucous membranes like the mouth and throat. Edema (choice A) is swelling caused by excess fluid trapped in the body's tissues, which is not a typical sign of dehydration. Weight gain (choice C) is also not a common sign of dehydration; in fact, dehydration usually leads to weight loss. Increased urination (choice D) is more indicative of conditions like diabetes or diuretic use, not dehydration.

Correct Answer: A

Rationale: Naloxone is the correct answer. Naloxone is the antidote for opioid overdose, including hydromorphone. Opioids can cause respiratory depression, and a significant decrease in respiratory rate from 16 to 6 breaths per minute indicates respiratory compromise. Naloxone should be administered promptly to reverse the effects of the opioid and restore normal respiratory function. Flumazenil (Choice B) is used to reverse the effects of benzodiazepines, not opioids. Activated charcoal (Choice C) is used for gastrointestinal decontamination in cases of overdose with certain substances, but it is not the appropriate intervention for opioid-induced respiratory depression. Aluminum hydroxide (Choice D) is an antacid and has no role in managing opioid overdose or respiratory depression.

Correct Answer: B

Rationale: The correct answer is to monitor blood glucose levels before administration. This step is crucial to ensure the correct dose of insulin is administered based on the current blood glucose level. Choice A is incorrect as insulin usually needs to be stored in the refrigerator and has an expiration date. Choice C is incorrect because insulin can be short-acting, rapid-acting, intermediate-acting, or long-acting. Choice D is also incorrect as insulin can have side effects such as hypoglycemia if the dose is too high.

Correct Answer: B

Rationale: When educating a client about levothyroxine, it is important to emphasize the need to monitor for signs of hyperthyroidism. Levothyroxine should be taken on an empty stomach, preferably in the morning, to maximize its absorption. Choice A is incorrect as it should not be taken with food. Choice C is incorrect as levothyroxine is not a pain reliever. Choice D is incorrect as levothyroxine is usually taken in the morning.

Correct Answer: B

Rationale: The correct answer is to assess the patient's heart rate. Levothyroxine is a thyroid hormone replacement medication that can increase metabolism. One of the potential side effects of levothyroxine is tachycardia (rapid heart rate). Therefore, it is essential for the healthcare provider to assess the patient's heart rate before administering the medication to monitor for any signs of tachycardia. Giving levothyroxine with food may affect its absorption, so it is typically recommended to administer it on an empty stomach. Administering it in the evening is not necessary unless specifically prescribed by the healthcare provider, and giving it with calcium supplements can interfere with the absorption of levothyroxine.