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Echocardiographic Diastolic Stress Testing: What Does It Add?

Kyung-Hee Kim1,2, Garvan C Kane1, Christina L Luong1

  • 1Department of Cardiovascular Medicine, Division of Cardiovascular Ultrasound, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.

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Diastolic stress echocardiography aids in diagnosing unexplained exertional dyspnea by assessing cardiac function. This non-invasive test improves heart failure with preserved ejection fraction (HFpEF) diagnosis.

Keywords:
Diastolic dysfunctionEchocardiographyStress test

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Area of Science:

  • Cardiology
  • Non-invasive diagnostics
  • Cardiovascular imaging

Background:

  • Exertional dyspnea often presents diagnostic challenges.
  • Heart failure with preserved ejection fraction (HFpEF) can be difficult to diagnose using resting assessments alone.
  • Diastolic dysfunction is a key factor in exertional dyspnea.

Purpose of the Study:

  • To evaluate the utility of diastolic stress echocardiography in diagnosing exertional dyspnea.
  • To assess the role of exercise E/e' in measuring left ventricular (LV) filling pressures.
  • To determine if diastolic stress testing improves the diagnosis of HFpEF.

Main Methods:

  • Utilizing exercise echocardiography to measure E/e' ratios.
  • Comparing exercise E/e' with invasive hemodynamic measurements.
  • Assessing the impact of tricuspid regurgitation velocity during exercise.

Main Results:

  • Exercise E/e' is validated as a measure of LV filling pressure.
  • Diastolic stress echocardiography enhances sensitivity for HFpEF diagnosis compared to resting tests.
  • Exercise E/e' demonstrates independent prognostic value.

Conclusions:

  • Diastolic stress echocardiography is recommended for patients with unexplained exertional dyspnea and normal resting diastolic function.
  • Integrating diastolic stress testing into clinical practice is supported by current data.
  • This non-invasive method aids in attributing dyspnea to cardiac causes.