Correct Answer: C

Rationale: A routine prescription indicates that the medication is to be administered on a regular schedule, typically daily, without a specified termination date or a specific number of doses. In this case, Lisinopril 10 mg PO once daily is to be given regularly until the healthcare provider decides to discontinue it. This type of prescription is common for medications that are part of the client's ongoing treatment regimen.

Correct Answer: D

Rationale: The correct instruction is to apply the Nitroglycerin transdermal patch to a hairless area of skin. This ensures proper absorption of the medication. It is important to rotate the application site daily to prevent skin irritation and tolerance development. Applying the patch to the same site each day can lead to decreased efficacy and potential skin reactions. Removing the patch at night is not necessary as the patches are usually worn continuously to provide constant medication delivery. Covering the patch with a heating pad can increase the absorption of the medication and lead to an overdose, which is not recommended.

Correct Answer: B

Rationale: Spironolactone is a potassium-sparing diuretic, meaning it can cause potassium retention, leading to elevated potassium levels. A potassium level of 5.2 mEq/L is above the normal range (3.5-5.0 mEq/L) and indicates hyperkalemia, which can be a serious condition. Therefore, this finding should be promptly reported to the healthcare provider for further evaluation and management to prevent potential complications.

Correct Answer: C

Rationale: The nurse should instruct the client to report a sore throat because it can indicate an infection due to the immunosuppressive effects of doxorubicin. In patients undergoing doxorubicin therapy, it is crucial to monitor for signs of infection promptly to prevent complications.

Correct Answer: A

Rationale: Metformin should be taken with meals to reduce gastrointestinal side effects and ensure better absorption. Instructing the client to take the medication with the first bite of food helps in achieving optimal effectiveness and minimizes the risk of side effects like nausea or upset stomach.