A nurse is caring for a client with a new diagnosis of heart failure. Which of the following dietary recommendations should the nurse provide?

Choice A reason: A low-sodium diet is recommended for heart failure to reduce fluid retention. Sodium promotes water reabsorption in the kidneys via the renin-angiotensin-aldosterone system, increasing preload and cardiac workload. Limiting sodium helps decrease blood volume, easing strain on the heart and preventing exacerbation of heart failure symptoms like edema and dyspnea. Choice B reason: A high-potassium diet is not routinely recommended for heart failure unless the client is on potassium-wasting diuretics like furosemide. While potassium supports cardiac function, excessive intake can cause hyperkalemia, especially in renal dysfunction, which is common in heart failure, potentially leading to arrhythmias and complicating management. Choice C reason: A low-fiber diet is not beneficial for heart failure. High-fiber diets are preferred to manage constipation, which can strain the cardiovascular system during defecation. Fiber also supports overall health, reducing cholesterol and aiding weight control, which are important for heart failure patients to reduce cardiac workload. Choice D reason: A high-fat diet is contraindicated in heart failure, as it increases the risk of atherosclerosis and cardiovascular strain. Dietary fats, especially saturated fats, contribute to coronary artery disease, worsening heart function. A heart-healthy diet emphasizes low-fat, nutrient-dense foods to support cardiac health and reduce disease progression.