An older adult client is being discharged after a myocardial infarction (MI) and receives a new prescription for atenolol. Which instruction is most important for the nurse to include in this client's teaching plan?

Potential Conditions

Anemia: Anemia commonly causes fatigue and weakness, but it does not typically explain diarrhea. Additionally, the use of spironolactone, a potassium-sparing diuretic, makes electrolyte imbalance a more likely cause of these symptoms rather than anemia.

Hepatic failure: While hepatic failure could cause fatigue and systemic symptoms, it usually presents with jaundice, ascites, or confusion in advanced cases. There are no signs of liver-related symptoms in this scenario, making hepatic failure less likely.

Hyperkalemia: Hyperkalemia is the most likely condition because spironolactone can cause potassium retention. Symptoms such as fatigue, muscle weakness, and gastrointestinal disturbances like diarrhea are classic early signs of elevated potassium levels.

Hyperuricemia: Hyperuricemia is characterized by elevated uric acid levels, often leading to gout attacks rather than gastrointestinal symptoms or muscle weakness. Therefore, it is not the primary concern with this client’s current presentation.

Actions to take

Check the client's oxygen saturation: Although oxygen saturation is important in many acute settings, the client’s symptoms suggest a metabolic issue rather than a respiratory problem. Checking oxygenation would not directly address suspected hyperkalemia.

Do a point of care glucose check: Checking glucose is appropriate for clients with symptoms of hyperglycemia or hypoglycemia, but this client’s symptoms and medication history point more toward an electrolyte imbalance rather than a glucose-related disorder.

Measure the client's abdominal girth: Measuring abdominal girth is useful for detecting fluid accumulation, such as ascites in liver failure, but it is not relevant in the assessment of hyperkalemia. It would not provide information needed for the client’s immediate concern.

Ask the client about their diet: Dietary habits, particularly potassium intake, can significantly impact potassium levels when using potassium-sparing medications like spironolactone. Understanding the client's diet can help identify factors contributing to hyperkalemia.

Do a blood chemistry panel: A blood chemistry panel would provide critical information about serum electrolytes, including potassium levels. It is essential for diagnosing and confirming hyperkalemia and guiding further treatment decisions.

Parameters to Monitor

Edema: While edema monitoring is important in some chronic conditions like heart failure, it is not a primary concern with hyperkalemia. Hyperkalemia affects muscle and cardiac conduction, not typically fluid balance or peripheral swelling.

Skin color: Monitoring skin color can reveal perfusion issues but does not directly help detect or manage hyperkalemia. Changes in skin color would not provide early or specific warning signs of worsening potassium levels.

Pedal pulses: Pedal pulses are useful in assessing circulatory problems such as peripheral arterial disease but are not directly related to the cardiac conduction disturbances seen in hyperkalemia. Focus should instead be on heart rhythm.

Potassium level: Potassium level monitoring is essential because hyperkalemia can progress quickly and lead to life-threatening cardiac complications. Keeping track of potassium levels helps assess the severity of the imbalance and the response to treatment.

Heart Rhythm: Monitoring heart rhythm is critical, as hyperkalemia can cause bradycardia, peaked T waves, and even cardiac arrest. Continuous cardiac monitoring allows for early detection of dangerous arrhythmias resulting from elevated potassium.

A. Administer an oral analgesic and evaluate its effectiveness before applying the new patch: There is no need to switch to oral analgesics if the client is already well-managed on a fentanyl patch. The focus should be on properly managing the patch schedule rather than changing the route of administration.

B. Apply the new patch in a different location after removing the original patch: Proper protocol for transdermal patches includes removing the old patch before applying a new one to prevent overdose. The new patch should be placed on a different skin site to avoid skin irritation and ensure even drug absorption.

C. Place the patch on the client's shoulder and leave both patches in place for 12 hours: Leaving both patches in place can lead to dangerously high serum fentanyl levels and significant respiratory depression. Only one patch should be used at a time unless otherwise specifically prescribed.

D. Remove the patch and consult with the healthcare provider (HCP) about the client's pain resolution: It is unnecessary to contact the HCP immediately if the client is pain-free and the scheduled time for patch replacement has arrived. Standard procedure should be followed by simply removing the old patch and applying the new one.