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How to relate diastolic left ventricular dysfunction to the results of stress echocardiography in aortic stenosis?

Thomas Bartel1, Silvana Müller1

  • 1Department of Internal Medicine III, Cardiology Division, Innsbruck Medical University, Austria.

Cardiovascular Diagnosis and Therapy
|January 9, 2014
PubMed

Insights

Altered functional capacity in aortic stenosis (AS) stems from systolic and diastolic left ventricular (LV) dysfunction. Low-dose dobutamine stress echocardiography (SE) is crucial for assessing LV function and functional capacity in specific AS patient groups.

Area of Science:

  • Cardiology
  • Echocardiography
  • Cardiovascular Physiology

Background:

  • Aortic stenosis (AS) can impair functional capacity through both systolic and diastolic left ventricular (LV) dysfunction.
  • Understanding the nuances of LV dysfunction is critical for managing patients with AS, particularly those who are asymptomatic or have specific echocardiographic profiles.

Purpose of the Study:

  • To emphasize the importance of evaluating both systolic and diastolic left ventricular (LV) function in patients with aortic stenosis (AS).
  • To highlight the role of low-dose dobutamine stress echocardiography (SE) in assessing functional capacity in specific AS populations.

Main Methods:

  • Assessment of systolic and diastolic left ventricular (LV) function.
  • Evaluation of functional capacity using low-dose dobutamine stress echocardiography (SE).

Main Results:

  • Altered functional capacity in AS is linked to impaired systolic performance and diastolic LV dysfunction.
  • Comprehensive assessment including SE is recommended for specific AS patient groups.

Conclusions:

  • Diastolic LV dysfunction is a significant contributor to reduced functional capacity in aortic stenosis (AS).
  • Low-dose dobutamine stress echocardiography (SE) is essential for a complete functional assessment in asymptomatic severe AS, borderline severe AS, and low-flow, low-gradient AS with reduced ejection fraction (EF).

Keywords:
Aortic stenosis (AS)diastolic left ventricular dysfunctionstress echocardiography (SE)

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