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April 18, 2026Clinical CardiologyOpen Access

“Loop Diuretics in Severe Aortic Stenosis: A Marker of Disease Severity, Not a Mortality Driver”

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Key result

Loop diuretic use in severe AS links to ~100% higher mortality, likely reflecting confounding by indication.

  • HR ≈ 2.0

Why the study?

Does loop diuretic use increase mortality in patients with severe aortic stenosis?

Population

Patients with severe aortic stenosis (AS)

Design

Editorial

Authors

ITIbadullah TahirHSHunain Shahbaz

Discussion

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Overview

Single-center bias precludes practice change using loop diuretic mortality data in severe AS; leaves open optimal agent pending RCTs.

Key Points

  • The aim is to evaluate the role of loop diuretics in assessing disease severity and mortality risk in severe aortic stenosis patients.
  • Retrospective single-center design study
  • Comparison of loop diuretic users with respective cohorts
  • Analysis of hemodynamic indices and mortality hazard ratios
  • LDT users showed greater symptoms of aortic stenosis and higher surgical risk scores
  • The statistical significance of torsemide dose diminished after adjusting for confounding factors
  • Diuretic use was more indicative of clinical severity rather than a direct mortality risk factor

Structured PICO

Does loop diuretic use increase mortality in patients with severe aortic stenosis?

P
Population
Patients with severe aortic stenosis (AS)
I
Intervention
Loop diuretics (specifically torsemide)
O
Outcome
Mortalityhard clinical

Main Result

Effect estimate: HR ≈ 2.0

Loop diuretic use in severe aortic stenosis serves as a marker of disease severity and congestion rather than an independent driver of mortality.

Limitations

  • Retrospective single-center design
  • Confounding by indication
  • Lack of exhaustive variable adjustment (frailty, comorbidity burden, longitudinal volume status, and postoperative therapy)
  • Limited generalizability due to use of only torasemide and specific patient populations
  • Retrospective single-center design of the original study
  • Lack of exhaustive variable adjustment (frailty, comorbidity burden, longitudinal volume status, postoperative therapy)
  • Limited generalizability (only torasemide used)

Cite This Study

Tahir et al. (2026) conducted a letter in Severe aortic stenosis. Loop diuretics was evaluated on Mortality (HR ≈ 2.0). Loop diuretic use in severe aortic stenosis was associated with mortality (HR ≈ 2.0), but this likely reflects confounding by indication and disease severity rather than a direct effect.

synapsesocial.com/papers/69e3205140886becb653f702https://doi.org/10.1002/clc.70306
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Loop Diuretic Therapy in Severe Aortic Stenosis: Marker of Organ Congestion, Unfavorable Hemodynamics, and Increased Post‐Valve Replacement Mortality2025 · 2 citations
  2. 2Association of diuretic treatment at hospital discharge in patients with heart failure with all-cause short- and long-term mortality: A propensity score-matched analysis from SwedeHF2018 · 15 citations
  3. 32025 ESC/EACTS Guidelines for the management of valvular heart disease2025 · 1,006 citations
  4. 42021 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure2021 · 13,609 citations
  5. 52022 AHA/ACC/HFSA Guideline for the Management of Heart Failure: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines2022 · 2,290 citations