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Gout, not hyperuricemia alone, impairs left ventricular diastolic function.

Jing-Chi Lin1,2, Chun-Liang Lin3,4, Mien-Cheng Chen5

  • 1Division of Allergy and Immunology and Rheumatology, Chang Gung Memorial Hospital, Chiayi, Taiwan. jingchilin@gmail.com.

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Summary
This summary is machine-generated.

Gout is linked to left ventricular diastolic dysfunction and enlarged left atrial volume, independent of hyperuricemia alone. This study highlights gout

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Area of Science:

  • Cardiology
  • Metabolic Disorders
  • Rheumatology

Background:

  • Gout, a metabolic disorder marked by hyperuricemia and inflammation, is associated with cardiovascular disease and left ventricular (LV) remodeling.
  • The specific impact of gout on LV diastolic function remains understudied, with limited data on hyperuricemia as the sole contributor to cardiac remodeling.
  • Investigating the relationship between gout and LV diastolic function is crucial for understanding cardiovascular risks in gout patients.

Purpose of the Study:

  • To examine the effects of gout on left ventricular (LV) diastolic function.
  • To determine if gout, beyond hyperuricemia, is associated with cardiac remodeling and diastolic dysfunction.
  • To assess the relationship between serum uric acid levels, gout diagnosis, and echocardiographic parameters of cardiac function.

Main Methods:

  • 173 patients were stratified into three groups based on serum uric acid (UA) levels.
  • All participants underwent comprehensive Doppler-echocardiography to evaluate LV and left atrial (LA) volumes and function.
  • Comparison of diastolic function parameters and LV remodeling indicators between tertiles of UA levels and between gout and non-gout groups.

Main Results:

  • No significant differences in LV diastolic parameters were observed across serum UA tertiles.
  • Gout patients exhibited significantly greater LV end-systolic dimensions, LV mass index, and E/Em ratio compared to non-gout patients.
  • Patients with gout showed a higher prevalence of moderate to severe LV diastolic dysfunction and larger maximal left atrial volume index (LAVi).

Conclusions:

  • Gout, independent of hyperuricemia levels alone, is significantly associated with impaired LV diastolic function.
  • Gout is linked to left atrial enlargement, indicating potential adverse cardiac remodeling.
  • The findings underscore the importance of considering gout as an independent risk factor for cardiac dysfunction.