Role of spot urinary sodium in outpatients with heart failure.

Fecha de publicación: 20/07/2024 Fecha Ahead of Print: 20/07/2024

Autores de IIS La Fe

• Víctor José Donoso Trenado

  Autor

Participantes ajenos a IIS La Fe

• Lorenzo, Miguel
• Espriella, Rafael De La
• Minana, Gema
• Nunez, Gonzalo
• Carratala, Arturo
• Rodriguez, Enrique
• Santas, Enrique
• Valls, Neus
• Villar, Sandra
• Bayes-Genis, Antoni
• Sanchis, Juan
• Nunez, Julio

Grupos

• Grupo de Investigación Clínica y Traslacional en Cardiología

  

  Investigador Principal

  Esther Roselló Lletí

Abstract

INTRODUCTION AND OBJECTIVES: Spot determination of urinary sodium (UNa+) has emerged as a useful tool for monitoring diuretic response in patients with acute heart failure (AHF). However, the evidence in outpatients is scarce. We aimed to examine the relationship between spot UNa+ levels and the risk of mortality and worsening heart failure (WHF) events in individuals with chronic HF. METHODS: This observational and ambispective study included 1145 outpatients with chronic HF followed in a single center specialized HF clinic. UNa+ assessment was carried out 1-5 days before each visit. The endpoints of the study were the association between UNa+ and risk of a) long-term death and b) AHF-hospitalization and total WHF events (including AHF-hospitalization, emergency department visits or parenteral loop-diuretic administration in HF clinic), assessed by multivariate Cox and negative binomial regressions. RESULTS: The mean ± standard deviation of age was 73 ± 11 years, 670 (58.5%) were men, 902 (78.8%) were on stable NYHA class II, and 595 (52%) had LFEF = 50%. The median (interquartile range) UNa+ was 72 (51-94) mmol/L. Over a median follow-up of 2.63 (1.70-3.36) years, there were 293 (25.6%) deaths and 382 WHF events (244 AHF-admissions) in 233 (20.3%) patients. After multivariate adjustment, baseline UNa+ was inverse and linearly associated with the risk of total WHF (IRR, 1.07; 95%CI, 1.02-1.12; P = .007) and AHF-admissions (IRR, 1.08; 95%CI, 1.02-1.14; P = .012) and borderline associated with all-cause mortality (HR, 1.04; 95%CI, 0.99-1.09; P = .068). CONCLUSIONS: In outpatients with chronic HF, lower UNa+ was associated with a higher risk of recurrent WHF events.

Copyright © 2024 Sociedad Española de Cardiología. Published by Elsevier España, S.L.U. All rights reserved.

Keywords

• Descompensación; Insuficiencia cardiaca crónica; Pacientes ambulatorios; Sodio urinario; chronic heart failure; outpatients; urinary sodium; worsening heart failure