Which statement by a client with heart failure indicates an understanding of the teaching?

The statement that indicates an understanding of the teaching is the one about limiting sodium intake to 2 grams daily. Clients with heart failure are often advised to follow a low-sodium diet, as excessive sodium can cause fluid retention, leading to exacerbation of heart failure symptoms and increased workload on the heart. The typical recommendation is to restrict sodium to 2,000 mg (or 2 grams) per day to help manage symptoms and maintain overall health. Adhering to this dietary guideline demonstrates a clear understanding of an essential aspect of managing heart failure.

The other statements, while they may reflect some level of understanding, do not prioritize the critical dietary modifications needed for heart failure management quite as directly as sodium restriction does. Weighing oneself every other morning is beneficial for monitoring weight changes but not as central as sodium intake. Decreasing potassium intake may be appropriate in some cases, but many heart failure patients are advised to actually maintain or increase potassium intake to counteract the effects of certain medications, like diuretics. Lastly, being aware of the need to call a doctor if there is significant weight gain is important, but acknowledging the sodium restriction highlights a more proactive approach to managing the condition.