A nurse is preparing to administer digoxin to a client who has heart failure.
Before administering this medication, which of the following actions should the nurse take?

Choice A rationale:

Hypoglycemia Hypokalemia (low potassium levels) is not typically associated with hypoglycemia (low blood sugar). Hypokalemia primarily affects the function of muscles and nerves, and it does not directly influence blood glucose levels.

Choice B rationale:

Cardiac dysrhythmias Hypokalemia can lead to cardiac dysrhythmias. Potassium plays a crucial role in maintaining the electrical activity of the heart, and low potassium levels can disrupt normal cardiac rhythms, potentially leading to life-threatening arrhythmias. Cardiac dysrhythmias are a well-recognized complication of severe hypokalemia, making this choice the correct one.

Choice C rationale:

Increased appetite Hypokalemia is not associated with an increased appetite. In fact, it can lead to gastrointestinal disturbances, such as nausea, vomiting, and abdominal pain, which may decrease appetite. The primary manifestations of hypokalemia are related to muscle weakness and cardiac abnormalities.

Choice D rationale:

Hyperreflexia Hyperreflexia (excessive reflex responses) is not a typical manifestation of hypokalemia. Hypokalemia is more commonly associated with muscle weakness, cramps, and cardiac disturbances. Hyperreflexia is often seen in conditions of excessive calcium levels (hypercalcemia) or neurological disorders, not hypokalemia.

Choice A rationale:

"I can plan to eat rice instead of baked potatoes.”. This choice demonstrates an understanding of dietary sources of potassium. Baked potatoes are a good source of potassium, and the client's willingness to substitute rice for baked potatoes indicates that they are aware of alternative potassium-rich foods. Potassium is essential for various bodily functions, including maintaining proper heart and muscle function. The client's willingness to make a dietary adjustment is a positive sign.

Choice B rationale:

"Adding pecans will be a change I can readily make.”. While pecans are a good source of potassium, this choice does not directly address the client's ability to substitute a potassium-rich food for one they might need to avoid. It focuses on a new addition to their diet rather than a substitution, making it a less relevant response to the teaching.

Choice C rationale:

"I will eat cantaloupe for my morning snack.”. Cantaloupe is indeed a good source of potassium, but this choice does not indicate an understanding of how to substitute potassium-rich foods in their diet. It only mentions adding cantaloupe as a snack without addressing the potential need for replacing other foods high in potassium. Therefore, it does not fully demonstrate comprehension of the teaching.

Choice D rationale:

"I will miss eating yogurt every day for breakfast.”. This choice expresses a sentiment but does not show an understanding of the teaching regarding dietary sources of potassium. It merely states that the client will miss yogurt without providing any insight into their ability to make appropriate dietary choices to maintain adequate potassium intake.