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Related Experiment Videos

Diastolic dysfunction and left atrial volume: a population-based study.

Allison M Pritchett1, Douglas W Mahoney, Steven J Jacobsen

  • 1Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.

Journal of the American College of Cardiology
|January 5, 2005
PubMed
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Diastolic dysfunction (DD) is linked to increased left atrial volume (LAVi), a marker of heart remodeling. While LAVi is associated with mortality, DD itself is a stronger predictor in the general population.

Area of Science:

  • Cardiology
  • Echocardiography
  • Population Health

Background:

  • Atrial enlargement is a potential indicator of diastolic dysfunction (DD) severity and duration.
  • The relationship between DD, atrial enlargement, and their prognostic significance in the general population requires further clarification.

Purpose of the Study:

  • To investigate the association between diastolic function and left atrial volume indexed to body surface area (LAVi).
  • To evaluate the prognostic implications of DD and LAVi in a population-based cohort.

Main Methods:

  • A cross-sectional study of 2,042 residents aged 45 years and older from Olmsted County, Minnesota.
  • Comprehensive Doppler echocardiography and medical record review were performed.

Main Results:

Related Experiment Videos

  • Left atrial volume indexed to body surface area (LAVi) increased with worsening diastolic dysfunction (DD) grades.
  • Grade II DD was associated with a 24% larger left atrial volume, and grades III-IV DD with a 62% larger volume, after adjusting for covariates.
  • Both DD and LAVi predicted all-cause mortality, but DD was the stronger independent predictor.

Conclusions:

  • Diastolic dysfunction (DD) contributes to left atrial remodeling.
  • DD is a more robust predictor of mortality than LAVi, likely reflecting the broader impact of cardiovascular disease in the general population.