A patient is on enalapril and diuretic therapy for heart failure. The nurse should notify the physician that the therapy is not effective when she finds?

1. A

   Dry cough

2. B

   Skin rash

3. C

   Edema legs

4. D

   Postural fall in B.P.

Appeared in: NCL (MP) Nursing Officer - 2019

Explanation

• The presence of leg edema indicates that the patient's body is still retaining excess fluid.
• A primary goal of diuretic therapy in heart failure is to eliminate this excess fluid (edema).
• Therefore, persistent or worsening edema is a clear sign that the current medication regimen is not adequately managing the fluid overload associated with heart failure.
• This finding suggests the need for a re-evaluation of the treatment plan, which may include adjusting medication dosages or adding other therapies.

Why Other Options Were Wrong

• Option A: A dry, non-productive cough is a well-known and common side effect of ACE inhibitors like enalapril. It is caused by the accumulation of bradykinin and does not indicate that the drug is failing to treat the heart failure.
• Option B: A skin rash is typically a sign of an allergic or hypersensitivity reaction to a medication. While it requires medical attention, it does not reflect the drug's therapeutic effectiveness in managing heart failure.
• Option D: A postural fall in blood pressure (orthostatic hypotension) is an expected side effect of both diuretics (due to fluid volume reduction) and ACE inhibitors (due to vasodilation). It shows the drugs are having a physiological effect, not that they are ineffective.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Evaluation of therapeutic effectiveness of heart failure medications to guide bedside assessment, documentation, and the next nursing action.
• Nurses must meticulously monitor patients with heart failure for signs of fluid overload, including daily weights, intake and output, presence of edema, and lung sounds.
• Timely reporting of ineffective therapy, such as worsening edema, is critical to prevent progression to acute decompensated heart failure and pulmonary edema, which are medical emergencies.
• Patient education should include self-monitoring for weight gain (reporting a gain of more than 2-3 lbs in a day or 5 lbs in a week) and recognizing worsening swelling or shortness of breath.

How to Approach the Question

• First, identify the key concept in the question: determining if the therapy for heart failure is 'not effective'.
• Next, understand the purpose of the prescribed medications. Enalapril (an ACE inhibitor) and diuretics are used to reduce fluid volume and decrease the workload on the heart.
• The goal is to alleviate symptoms of fluid overload, such as edema.
• Then, analyze each option to differentiate between a 'side effect' of the medication and a sign of 'therapeutic failure'.
• A side effect is an unintended, often predictable, reaction to a drug (e.g., cough, hypotension).
• Therapeutic failure means the drug is not achieving its primary goal (e.g., persistent edema).

Concept Tested & Keywords

• Concept Tested: Evaluation of therapeutic effectiveness of heart failure medications.
• Stem keywords: enalapril, diuretic therapy, heart failure, not effective
• Lead-in keywords: notify the physician
• Clinical cues: Patient is on combination therapy (ACE inhibitor and diuretic) for heart failure, which directs the focus to signs of fluid overload.
• Negative lead-in flag: NOT changes the reasoning strategy; look for the exception or incorrect statement rather than the true statement.

Question ID

Q7g557c48Km5eo8SzA9ihi

Copy ID

Reference Book

E6 Medicine Harrison 22e Part 1 p. 322-324

E6 Pharmacology Nursing Lilley 11e Part 2 pp. 75-77, 154-156