Which type of diet would increase the risk for dysrhythmias in a patient with kidney disease?

A diet rich in potassium is associated with an increased risk for dysrhythmias in patients with kidney disease due to the kidneys' impaired ability to excrete potassium. When potassium levels in the blood rise too high, a condition known as hyperkalemia occurs, which can lead to serious heart rhythm disturbances. In healthy individuals, the kidneys effectively filter excess potassium from the bloodstream, maintaining a balance. However, in individuals with kidney disease, potassium regulation is compromised, posing a serious risk for complications, including dysrhythmias.

In contrast, a low-protein diet may be recommended to reduce the workload on the kidneys and lower the production of nitrogenous waste, while a high-fiber diet can support overall gastrointestinal health without placing significant strain on kidney function. A low-sodium diet is often encouraged to help manage fluid retention and hypertension, which can adversely affect the kidneys. Thus, among the options provided, a potassium-rich diet presents the most significant risk for dysrhythmias in patients with compromised kidney function.