A nurse is planning to administer a first dose of captopril (Capoten) to a hospitalized client who has hypertension. Which of the following medications can intensify early adverse effects of captopril? Select all that apply

Many antihypertensive drugs, such as beta blockers and certain diuretics, can cause sexual dysfunction, including decreased libido, erectile dysfunction, or difficulty with ejaculation. These effects can significantly impact adherence to therapy. The most appropriate nursing action is to acknowledge the concern and inform the patient that the physician can adjust the dose or change the medication to minimize side effects while maintaining blood pressure control.

Rationale for correct answer:

B. “The physician can work with you on changing the dose and/or drugs.”
This response shows therapeutic communication and supports collaboration in care. The nurse recognizes that sexual dysfunction is a common adverse effect of some antihypertensives and encourages the patient to discuss it with the provider. Adjusting the dose, changing to a different class (e.g., ACE inhibitor, ARB, or calcium channel blocker), or timing the medication differently can often resolve the issue.

Rationales for incorrect answers:

A. “Not to worry. Eventually, tolerance will develop.”
This statement is inaccurate and dismissive. Tolerance to sexual side effects does not typically occur with antihypertensive therapy, and reassurance without intervention may discourage further communication about the issue.

C. “Sexual dysfunction happens with this therapy, and you will learn to accept it.”
This response is non-therapeutic and lacks empathy. It dismisses the patient’s concern and may lead to nonadherence, as sexual health is an important aspect of quality of life.

D. “This is an unusual occurrence, but it is important to stay on your medications.”
This response provides false reassurance, as sexual dysfunction is actually a common side effect of many antihypertensive drugs. It also ignores the opportunity to address the patient’s concern through collaborative problem-solving.

Take-home points:
• Sexual dysfunction is a common side effect of beta blockers and diuretics used for hypertension.
• The nurse should encourage open communication and refer the patient for possible medication adjustment.
• Empathetic, therapeutic responses improve adherence and patient satisfaction with treatment.

Hydralazine (Apresoline) is a direct-acting vasodilator that relaxes the smooth muscles of arterioles, leading to reduced peripheral resistance and decreased blood pressure. However, this sudden vasodilation can trigger a reflex sympathetic response, causing tachycardia and increased cardiac output. To counteract this compensatory effect, a beta blocker such as propranolol (Inderal) is prescribed concurrently to maintain a stable heart rate and prevent excessive cardiac workload.

Rationale for correct answer:
B. The hydralazine may cause tachycardia and the propranolol will help keep the heart rate within normal limits.
Hydralazine’s vasodilatory effect decreases systemic vascular resistance, prompting a reflex increase in heart rate and contractility. Propranolol, a nonselective beta-adrenergic blocker, inhibits sympathetic stimulation, thereby reducing heart rate, myocardial oxygen demand, and cardiac workload.

Rationales for incorrect answers:

A. Giving the two drugs together will lower the blood pressure even more than just one alone.
While combination therapy can enhance blood pressure control, the main reason for adding propranolol is not simply to intensify the hypotensive effect, but to prevent reflex tachycardia and excessive cardiac stimulation caused by hydralazine.

C. The propranolol is to prevent lupus erythematosus from developing.
Drug-induced lupus-like syndrome is a rare side effect of hydralazine, but propranolol does not prevent this condition. Monitoring for symptoms such as joint pain, rash, and fever is more appropriate than using propranolol for prevention.

D. Direct-acting vasodilators such as hydralazine cause fluid retention and the propranolol will prevent excessive fluid buildup.
Fluid retention occurs due to activation of the renin-angiotensin system after vasodilation. Diuretics, not beta blockers, are used to counteract this effect. Propranolol helps control heart rate, not fluid balance.

Take-home points:

• Hydralazine causes reflex tachycardia; propranolol is added to prevent an excessive heart rate.
• Beta blockers reduce sympathetic stimulation and cardiac workload when used with vasodilators.
• Combination therapy in hypertension aims to improve control while minimizing drug-induced side effects.