The nurse is teaching an older adult with a new prescription for hydrochlorothiazide as a second anti-hypertensive drug. What safety precaution will the nurse include in the teaching?

A. Let your provider know if a new cough occurs:
This teaching is essential because lisinopril, an angiotensin-converting enzyme (ACE) inhibitor, is associated with a potential side effect of a persistent, dry cough. Notifying the healthcare provider if a new cough develops allows for appropriate management, such as discontinuation or adjustment of the medication to alleviate the symptom.

B. Take the medication on a full stomach:
Taking lisinopril with or without food is acceptable, as it does not significantly affect its absorption. However, taking it on an empty stomach is often recommended to optimize absorption. Advising the patient to take the medication on a full stomach is incorrect and may lead to misunderstandings.

C. This medication will not cause edema:
Lisinopril, as an ACE inhibitor, may actually cause or exacerbate edema as a side effect. It can lead to vasodilation and fluid retention, particularly in susceptible individuals. Providing incorrect information about the medication's potential side effects can compromise patient understanding and safety.

D. Eat a high potassium diet:
Lisinopril can increase serum potassium levels, so instructing the patient to consume a high-potassium diet may exacerbate this effect and lead to hyperkalemia. While dietary potassium intake should be monitored, advising a high-potassium diet without proper guidance can pose risks to the patient's health.

A. Dry skin:
Dry skin is not a commonly reported side effect of diltiazem, a calcium channel blocker used for blood pressure management. While dry skin can occur due to various reasons, it is less likely to be directly associated with diltiazem use. Therefore, it is not the side effect that the nurse should prioritize instructing the patient to report to the provider.

B. Burning sensation:
Although burning sensation is not a common side effect of diltiazem, it can occasionally occur as a skin reaction or hypersensitivity reaction to the medication. While this symptom may warrant attention, it is generally less concerning compared to other potential side effects of diltiazem. Therefore, while it is important for the patient to report any unusual sensations or discomfort, burning sensation alone may not be the most critical side effect to report.

C. Diarrhea:
Diarrhea is a potential side effect of diltiazem use. Calcium channel blockers like diltiazem can affect gastrointestinal motility and lead to gastrointestinal disturbances, including diarrhea. While diarrhea can be bothersome and may indicate intolerance to the medication, it is generally considered a common side effect rather than a severe adverse reaction. Therefore, while the nurse should educate the patient about the possibility of diarrhea and encourage reporting any persistent or severe cases, it may not be the most critical side effect to report to the provider.

D. Irregular heart rate:
Irregular heart rate, including bradycardia or tachycardia, is a significant and potentially serious side effect of diltiazem. As a calcium channel blocker, diltiazem can affect cardiac conduction, leading to alterations in heart rate and rhythm. Irregular heart rate can indicate a significant cardiovascular complication and may require prompt medical attention. Therefore, the nurse should prioritize instructing the patient to report any changes in heart rate, including palpitations, rapid heartbeat, or irregular pulse, to the provider immediately.