A nurse is caring for a client who is at risk for hypokalemia. Which of the following foods should be included in the client's diet?

Choice A rationale Corn is a starchy vegetable that provides some nutrients but is not considered a high-potassium food source. In the management of hypokalemia, where serum potassium levels are below 3.5 mEq/L, the focus is on incorporating foods with high concentrations of the cation. While corn contains approximately 270 mg of potassium per cup, it is significantly less dense in this electrolyte compared to other vegetables. It does not provide the robust replacement needed for high-risk clients. Choice B rationale Cucumbers consist mostly of water and fiber but are relatively low in potassium content. One cup of sliced cucumbers provides only about 150 mg of potassium, which is insufficient for effectively raising serum levels in a client at risk for hypokalemia. While healthy for hydration, they are not the therapeutic choice for electrolyte replacement. Dietitians prioritize foods that offer a higher milligram-to-volume ratio of potassium to ensure that the patient meets the necessary daily intake goals. Choice C rationale Asparagus is a nutritious vegetable containing various vitamins and minerals, providing roughly 200 mg of potassium per serving. While it is better than some other low-potassium options, it still falls short of being a primary dietary recommendation for treating low potassium. Clients needing to increase their potassium intake are encouraged to consume foods that provide a more substantial boost per serving. It is a healthy addition but not the most potent choice for electrolyte management. Choice D rationale Tomatoes are an excellent source of potassium and are highly recommended for clients at risk for hypokalemia. A single cup of tomato juice or a large tomato can provide over 400 mg of potassium, which helps maintain serum levels within the normal range of 3.5 to 5.0 mEq/L. Increasing intake of potassium-rich foods like tomatoes helps support cardiac electrical conductivity and muscle contraction. This makes them a vital dietary component for preventing the complications of low potassium.