Correct Answer: C

Rationale: The correct answer is C: Nervousness and tremors. These symptoms may indicate hyperthyroidism resulting from excessive dosing of levothyroxine. Weight gain (Choice A) is a common symptom of hypothyroidism and may indicate undertreatment or inadequate dosing. Bradycardia (Choice B) is a symptom of hypothyroidism and may improve with levothyroxine therapy; it does not typically indicate an urgent need for healthcare provider notification. Fatigue (Choice D) is a symptom of hypothyroidism and can persist even with levothyroxine treatment, so it is not a symptom that would require immediate notification of the healthcare provider.

Correct Answer: B

Rationale: The correct answer is 'B. Hyponatremia.' Hydrochlorothiazide can lead to electrolyte imbalances, such as hyponatremia, due to its diuretic effect. This potential adverse effect should be closely monitored in patients taking HCTZ. Choice A, hyperkalemia, is less likely to occur with HCTZ as it tends to cause hypokalemia. Choice C, bradycardia, is not a common adverse effect of HCTZ. Choice D, hyperglycemia, is also less commonly associated with HCTZ use compared to hyponatremia.

Correct Answer: C

Rationale: The correct answer is C: Nervousness and tremors. These symptoms may indicate hyperthyroidism resulting from excessive dosing of levothyroxine. Weight gain (Choice A) is a common symptom of hypothyroidism and may indicate undertreatment or inadequate dosing. Bradycardia (Choice B) is a symptom of hypothyroidism and may improve with levothyroxine therapy; it does not typically indicate an urgent need for healthcare provider notification. Fatigue (Choice D) is a symptom of hypothyroidism and can persist even with levothyroxine treatment, so it is not a symptom that would require immediate notification of the healthcare provider.

Correct Answer: A

Rationale: The correct first action for the nurse to take when a post-operative client complains of severe pain is to reassess the pain and its characteristics. Reassessment is crucial to understand the nature and intensity of the pain, which will guide the nurse in providing appropriate interventions. Administering pain medication may be necessary but should only be done after reassessment to ensure the right medication and dose are given. Notifying the surgeon may be required in certain situations, but reassessment of pain should precede this action. Encouraging relaxation techniques is not the priority when a client is experiencing severe pain post-operatively.

Correct Answer: A

Rationale: The most crucial action for the nurse before administering a stat dose of potassium chloride IV to a client with hypokalemia is to ensure the IV is flowing freely. A freely flowing IV is essential to safely and effectively deliver potassium chloride, helping to prevent infusion-related issues. Checking the client's electrolyte levels or obtaining a baseline ECG may be important but are not the most critical actions before administering the medication. Mixing the medication thoroughly is not applicable in this scenario as potassium chloride is typically provided ready to use.