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Defining left ventricular segmental and global function by echocardiographic intraventricular contrast flow patterns.

S Thanigaraj1, R Chugh, K B Schechtman

  • 1Cardiovascular Division, Washington University School of Medicine, St. Louis, Missouri, USA. hari@cardsfellow.wustl.edu

The American Journal of Cardiology
|November 15, 2000
PubMed
Summary
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Contrast echocardiography reveals distinct left ventricular (LV) flow patterns. Pattern A indicates normal LV function, while Pattern B suggests wall motion abnormalities, enhancing diagnostic capabilities.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Echocardiography

Background:

  • Contrast echocardiography enhances visualization of the left ventricular (LV) endocardial border.
  • Intracavitary contrast flow patterns within the LV may correlate with myocardial wall motion.

Purpose of the Study:

  • To investigate the relationship between left ventricular intracavitary contrast flow patterns and myocardial wall motion.
  • To determine if contrast flow patterns can aid in assessing global and segmental LV function.

Main Methods:

  • Reviewed contrast-enhanced echocardiograms from 348 patients.
  • Defined two intracavitary contrast flow patterns (A: swift, homogeneous; B: protracted, swirling) from apical views.
  • Correlated flow patterns with LV segmental and global function assessments.

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Main Results:

  • 91% of patients with pattern A had normal LV segmental function.
  • 102 of 103 patients with pattern B had at least one wall motion abnormality (p <0.0001).
  • Pattern A was associated with normal global LV function in 93% of cases, while pattern B indicated LV dysfunction in 83% (p <0.0001).

Conclusions:

  • Left ventricular intracavitary contrast flow patterns provide valuable complementary information for assessing LV function.
  • Distinct flow patterns observed during contrast echocardiography correlate strongly with normal or abnormal myocardial wall motion.