Cited by 499Heart Failure Treatment and ManagementDiabetes Treatment and ManagementIon Transport and Channel Regulation

Why do SGLT2 inhibitors reduce heart failure hospitalization? A differential volume regulation hypothesis

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Hallow, Karen M., Helmlinger, Gabriel, Greasley, Peter J., McMurray, John J. V., Boulton, David W.·2018·Diabetes, Obesity and Metabolism

Abstract

The effect of a sodium glucose cotransporter 2 inhibitor (SGLT2i) in reducing heart failure hospitalization in the EMPA‐REG OUTCOMES trial has raised the possibility of using these agents to treat established heart failure. We hypothesize that osmotic diuresis induced by SGLT2 inhibition, a distinctly different diuretic mechanism than that of other diuretic classes, results in greater electrolyte‐free water clearance and, ultimately, in greater fluid clearance from the interstitial fluid (IF) space than from the circulation, potentially resulting in congestion relief with minimal impact on blood volume, arterial filling and organ perfusion. We utilize a mathematical model to illustrate that electrolyte‐free water clearance results in a greater reduction in IF volume compared to blood volume, and that this difference may be mediated by peripheral sequestration of osmotically inactive sodium. By coupling the model with data on plasma and urinary sodium and water in healthy subjects who received either the SGLT2i dapagliflozin or loop diuretic bumetanide, we predict that dapagliflozin produces a 2‐fold greater reduction in IF volume compared to blood volume, while the reduction in IF volume with bumetanide is only 78% of the reduction in blood volume. Heart failure is characterized by excess fluid accumulation, in both the vascular compartment and interstitial space, yet many heart failure patients have arterial underfilling because of low cardiac output, which may be aggravated by conventional diuretic treatment. Thus, we hypothesize that, by reducing IF volume to a greater extent than blood volume, SGLT2 inhibitors might provide better control of congestion without reducing arterial filling and perfusion.

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Authors
Hallow, K. M., Helmlinger, G., Greasley, P. J., McMurray, J. J. V., & Boulton, D. W.
Affiliations
  • University of Georgia (US)
  • AstraZeneca (United States) (US)
  • AstraZeneca (Sweden) (SE)
  • University of Glasgow (GB)
Corresponding author
Hallow, Karen M.
Venue
Diabetes, Obesity and Metabolism
Publisher
Wiley
Published
2017-11-15
Volume
20
Issue
3
Pages
479-487
ISSN
  • 1462-8902 (ISSN-L)
  • 1463-1326
OpenAlex
W2763866789
Cited by
499
References
24
Citations by year
2026: 36 · 2025: 50 · 2024: 46 · 2023: 75 · 2022: 65 · 2021: 89 · 2020: 76 · 2019: 44 · 2018: 15 · 2016: 1 · 2012: 1
FWCI
28.74
Type
journal article
Language
en
Open access
Locations
  • Diabetes Obesity and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion, cc-by-sa)
  • Research Bank (Australian Catholic University) (submittedVersion)
Funders
AstraZeneca
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Failure Treatment and Management
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
Keywords
SGLT2 inhibitors, dapagliflozin, heart failure hospitalization, interstitial fluid volume, osmotic diuresis, fluid congestion, loop diuretics, bumetanide, EMPA-REG OUTCOME
MeSH terms
Sodium-Glucose Transporter 2 Inhibitors, Adult, Benzhydryl Compounds, Blood Volume, Bumetanide, Diuresis, Diuretics, Drug Combinations, Drug Interactions, Female, Glucosides, Heart Failure, Hospitalization, Humans, Male, Middle Aged, Osmolar Concentration, Sodium, Water-Electrolyte Imbalance, Young Adult

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