Resistant hyponatraemia in a patient with follicular lymphoma and heart failure with reduced ejection fraction: a case report.

Autor: Butler J; Department of Cardiology, Northern General Hospital, Herries Road, Sheffield S5 7AU, UK., Miro F; Department of Cardiology, Northern General Hospital, Herries Road, Sheffield S5 7AU, UK., Al-Mohammad A; Department of Cardiology, Northern General Hospital, Herries Road, Sheffield S5 7AU, UK.
Jazyk: angličtina
Zdroj: European heart journal. Case reports [Eur Heart J Case Rep] 2021 May 15; Vol. 5 (5), pp. ytab183. Date of Electronic Publication: 2021 May 15 (Print Publication: 2021).
DOI: 10.1093/ehjcr/ytab183
Abstrakt: Background: Hyponatraemia is a common problem in patients with heart failure. It can be difficult to treat, especially in the presence of the patient's needs for diuresis and manipulation of the renin-angiotensin-aldosterone system (RAAS).
Case Summary: This concerns a 74-year-old woman with follicular lymphoma and severe global left ventricular systolic dysfunction secondary to treatment with R-CHOP chemotherapy. She presented a difficult challenge in the management of her decompensated heart failure alongside hyponatraemia as low as 113 mmol/L. This was resistant to standard treatment. The resistance to usual measures necessitated treatment with Tolvaptan, a selective arginine vasopressin V2 inhibitor used to treat hyponatraemia in syndrome of inappropriate anti-diuretic hormone. This, along with a strict fluid restriction of 500 mL/day, resolved the patient's hyponatraemia and enabled her discharge home on tolerated heart failure treatment. She has now remained stable for almost 12 months.
Discussion: The potential causes of hyponatraemia are discussed along with the role of Tolvaptan in its management.
(© The Author(s) 2021. Published by Oxford University Press on behalf of the European Society of Cardiology.)
Databáze: MEDLINE