A patient has a new prescription for an ACE inhibitor. During a review of the patient's list of current medications, which would cause concern for a possible interaction with this new prescription? Select all that apply

For clients with hypertension, lifestyle modifications remain essential even after starting on medication therapy. Pharmacologic treatment is often necessary when lifestyle measures alone are insufficient, but it does not replace them. Combining drug therapy with lifestyle changes such as diet modification, weight control, physical activity, and smoking cessation provides the best long-term control of blood pressure and prevention of complications such as stroke, myocardial infarction, and renal damage.

Rationale for correct answer:

A. “I figure that since I have started on these medications that I don’t have to follow those lifestyle modifications anymore.”
This statement demonstrates a misunderstanding of hypertension management. Antihypertensive drugs work best when combined with ongoing lifestyle modifications, including reduced sodium intake, regular exercise, limited alcohol consumption, and stress management. Discontinuing these habits can lead to poor blood pressure control and increased risk of cardiovascular complications despite medication adherence. The nurse should reinforce that lifestyle changes are a lifelong commitment, not a temporary measure.

Rationales for incorrect answers:

B. “I will walk every day at least 20 minutes.”
This reflects positive adherence to exercise recommendations. Regular physical activity, such as brisk walking for 20–30 minutes most days of the week, improves cardiovascular function and helps reduce blood pressure.

C. “I will weigh myself at the same time every day and report a weight gain of more than 2 pounds.”
Daily weight monitoring helps detect fluid retention, especially in clients taking diuretics or those with cardiovascular comorbidities. This is an appropriate and safe self-care behavior.

D. “I think that I can keep track of my blood pressure using a journal to record it.”
Keeping a blood pressure log demonstrates active self-monitoring, which allows both the patient and provider to evaluate treatment effectiveness and make necessary adjustments. This behavior supports effective long-term hypertension management.

Take-home points:
• Lifestyle modifications must continue even after antihypertensive therapy begins.
• Medication and healthy habits work synergistically to maintain optimal blood pressure control.
• Patient education should emphasize that long-term adherence to both pharmacologic and lifestyle measures prevents complications and promotes cardiovascular health.

ACE inhibitors are used to treat hypertension, heart failure, and diabetic nephropathy by inhibiting the conversion of angiotensin I to angiotensin II, leading to vasodilation, decreased aldosterone secretion, and sodium and water excretion. However, they can cause hyperkalemia and reduced renal perfusion, so combining them with certain other drugs—such as potassium supplements or NSAIDs—can lead to serious interactions that compromise kidney function or electrolyte balance.

Rationale for correct answers:
B. A potassium supplement taken daily
ACE inhibitors reduce aldosterone secretion, leading to potassium retention. Taking a potassium supplement concurrently can result in dangerous hyperkalemia, which may cause cardiac arrhythmias, muscle weakness, or even cardiac arrest. Clients on ACE inhibitors should be advised to avoid potassium supplements and potassium-rich salt substitutes unless specifically directed and monitored by their provider.

E. An NSAID taken as needed for headaches
NSAIDs (e.g., ibuprofen, naproxen) can reduce the antihypertensive effect of ACE inhibitors and impair renal perfusion, especially in patients with dehydration, heart failure, or preexisting renal disease. This combination increases the risk of acute kidney injury due to the additive effects of reduced renal blood flow and sodium retention caused by NSAIDs.

Rationales for incorrect answers:
A. A benzodiazepine taken as needed for allergies
Benzodiazepines (e.g., lorazepam, diazepam) act on the CNS as anxiolytics or sedatives, not as antihistamines. They do not significantly interact with ACE inhibitors to cause hypotension, renal impairment, or electrolyte imbalance.

C. An oral anticoagulant taken daily
Oral anticoagulants (e.g., warfarin) act on the coagulation pathway and have no pharmacologic or metabolic interaction with ACE inhibitors. The combination does not alter drug effectiveness or increase adverse reactions.

D. An opioid used for occasional severe pain
Opioids (e.g., morphine, hydrocodone) primarily depress the CNS and may cause mild hypotension, but occasional use does not typically result in additive or dangerous interactions with ACE inhibitors. The risk is minimal and not a clinical concern.

Take-home points:

• ACE inhibitors increase serum potassium, so combining them with potassium supplements or potassium-sparing drugs can cause hyperkalemia.
• NSAIDs can blunt the antihypertensive effect of ACE inhibitors and raise the risk of renal impairment.
• Always assess renal function, electrolyte balance, and concurrent medication use before starting ACE inhibitor therapy