Sodium Management in Heart Failure

Sodium plays a central role in the regulation of intravascular volume, extracellular fluid balance and blood pressure, all of which are critically perturbed in heart failure. Excessive dietary sodium intake promotes fluid retention, exacerbates congestion and imposes additional strain on a failing myocardium, while overly stringent restriction may trigger maladaptive neurohormonal activation and compromise nutritional status. Contemporary management strategies aim to achieve an optimal sodium balance through a combination of dietary counselling, judicious use of diuretics and, in selected acute settings, administration of hypertonic saline to enhance natriuresis without precipitating renal dysfunction. Individualised approaches that account for the patient’s clinical phenotype, comorbidities and renal function are increasingly advocated, reflecting evidence that one-size-fits-all sodium targets may be counterproductive. Advances in ambulatory monitoring, patient education and precision nutrition support are broadening the clinician’s toolkit for maintaining euvolaemia, reducing hospital readmissions and improving quality of life. At a global level, harmonising dietary recommendations with local food practices and healthcare resources remains paramount to translating trial findings into real-world benefit.

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Sodium Management in Heart Failure publication trend

The graph below shows the total number of articles in sodium management in heart failure across all publications each year (not limited to Nature Index journals).

Technical terms

Natriuresis: Excretion of sodium in the urine, a primary mechanism for reducing fluid overload in heart failure.

Neurohormonal activation: Compensatory release of hormones (eg, renin, angiotensin, aldosterone, noradrenaline) that regulate blood pressure and volume but may exacerbate heart failure progression.

Congestion: Pathological accumulation of fluid in tissues and organs, most notably the lungs and peripheral tissues, due to inadequate cardiac output.

Hyponatraemia: Abnormally low serum sodium concentration, common in advanced heart failure and associated with worse prognosis.

References

1. Sodium Intake and Heart Failure. International Journal of Molecular Sciences (2020).
2. Fluid and Salt Balance and the Role of Nutrition in Heart Failure. Nutrients (2022).
3. The Effect of a Personalized Approach to Patient Education on Heart Failure Self-Management. Journal of Personalized Medicine (2018).
4. Role of dietary sodium restriction in chronic heart failure: systematic review and meta-analysis. Clinical Research in Cardiology (2023).
5. The added value of hypertonic saline solution to furosemide monotherapy in patients with acute decompensated heart failure: A meta‐analysis and trial sequential analysis. Clinical Cardiology (2023).
6. The relationship of diuretics and dietary sodium in patients with heart failure: an analysis of the SODIUM-HF trial. American Heart Journal (2024).