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Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
11:04

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism

Published on: September 1, 2014

Pulsed tissue Doppler evaluation of mitral annulus motion: a new window to assessment of diastolic function

L Lindström1, B Wranne

  • 1Department of Clinical Physiology, Linköping Heart Center, Faculty of Health Sciences, Linköping University, Sweden.

Clinical Physiology (Oxford, England)
|March 9, 1999
PubMed

Insights

Pulsed tissue Doppler of mitral annulus motion offers a valuable, non-invasive method for assessing left ventricular (LV) diastolic function. This technique reveals significant age-related changes, requiring age-matched reference values for accurate diagnosis of diastolic dysfunction.

Area of Science:

  • Cardiology
  • Echocardiography
  • Physiology

Background:

  • Diastolic dysfunction is a key contributor to heart failure.
  • Current non-invasive assessments of diastolic function, like Doppler echocardiography, have limitations in directly evaluating ventricular relaxation and compliance.
  • Invasive methods are impractical for routine clinical use.

Purpose of the Study:

  • To investigate the tissue Doppler pattern of mitral annulus motion in healthy individuals and patients with suspected left ventricular (LV) diastolic dysfunction.
  • To establish the utility of pulsed tissue Doppler for assessing LV diastolic function non-invasively.

Main Methods:

  • Pulsed tissue Doppler imaging was used to record peak velocities of mitral annulus motion.
  • Measurements were taken in young normal subjects, older normal subjects, and patients with systemic hypertension or aortic stenosis.
  • Analysis focused on early diastolic (E) and late diastolic (A) annulus velocities, as well as systolic velocities.

Main Results:

  • Older normal subjects exhibited significantly lower peak early diastolic (E) annulus velocities and higher late diastolic (A) velocities compared to young normals.
  • Patients with hypertension and aortic stenosis showed significantly lower E-velocities compared to older normals, with a more pronounced reduction in aortic stenosis patients.
  • Systolic peak velocities decreased with age and in patients with aortic stenosis.

Conclusions:

  • Pulsed tissue Doppler measurement of mitral annulus motion provides valuable and easily obtainable data on LV diastolic function.
  • Significant age-related changes in the diastolic velocity pattern necessitate the use of age-matched reference values.
  • This technique shows promise as a practical non-invasive tool for diagnosing diastolic dysfunction.

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