Correct Answer: B

Rationale: The correct answer is B. Levothyroxine should be taken every morning before breakfast to enhance absorption and maintain consistent thyroid hormone levels. Option A is incorrect because levothyroxine should be taken on an empty stomach. Option C is incorrect because chest pain is not a common side effect of levothyroxine and stopping the medication abruptly can be harmful. Option D is incorrect because taking levothyroxine at bedtime may result in decreased absorption due to interactions with food and other medications.

Correct Answer: C

Rationale: Urinary retention is an adverse effect of morphine, as it can lead to the relaxation of the detrusor muscle and sphincter constriction in the bladder. Diaphoresis, hypotension, and tachycardia are common side effects of morphine due to its vasodilatory effects and impact on the autonomic nervous system. Diaphoresis is excessive sweating, which can be a normal response to pain or fever. Hypotension and tachycardia can occur due to morphine's vasodilatory effects and its impact on the cardiovascular system. Therefore, the presence of urinary retention would indicate the need for further assessment and intervention.

Correct Answer: B

Rationale: Correct Answer: The healthcare professional should review serum creatinine levels before administering metformin to assess kidney function. Metformin is excreted by the kidneys, and checking serum creatinine helps prevent lactic acidosis, a potential side effect in individuals with impaired renal function. Choice A: Potassium levels are not directly related to the administration of metformin. While monitoring potassium levels is important for some medications, it is not the priority when initiating metformin. Choice C: Sodium levels are not typically assessed specifically before starting metformin. It is not a routine lab test required prior to metformin administration. Choice D: Hemoglobin A1C reflects long-term blood sugar control and is not a lab test that needs to be reviewed before initiating metformin. It is used to monitor diabetes management over time, not for immediate medication administration considerations.

Correct Answer: B

Rationale: The correct answer is B: 'Potassium 5.2 mEq/L.' When a client is taking spironolactone, which is a potassium-sparing diuretic, monitoring potassium levels is crucial. A potassium level of 5.2 mEq/L is higher than normal and can lead to cardiac dysrhythmias, so it should be reported. Choices A, C, and D are within normal ranges and would not be of immediate concern when assessing a client taking spironolactone.

Correct Answer: B

Rationale: The correct action for the nurse to take when preparing to administer an intermittent tube feeding to a client with a gastrostomy tube is to flush the tube with 30 mL of water before feeding. This step helps ensure the patency of the tube by clearing any blockages or residuals. Choice A is incorrect because flushing after feeding would not prevent clogging before the feeding. Choice C is unrelated to tube feeding administration. Choice D is incorrect as the height for the feeding bag is usually recommended to be at or below the level of the stomach to prevent complications like aspiration.