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Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
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The influence of left ventricular diameter on left atrial appendage size and thrombus formation in patients with

Aurora Bakalli1, Lulzim Kamberi, Ejup Pllana

  • 1Department of Cardiology, University Clinical Center of Kosova, Prishtine, Kosovo. abakalli@hotmail.com

Turk Kardiyoloji Dernegi Arsivi : Turk Kardiyoloji Derneginin Yayin Organidir
|May 18, 2010
PubMed

Insights

Patients with dilated left ventricles (LV) have enlarged left atrial appendages (LAA), increasing their risk for LAA thrombus formation. This study highlights the LAA as a critical site for thrombus in dilated cardiomyopathy patients.

Area of Science:

  • Cardiology
  • Cardiovascular Imaging
  • Thrombosis Research

Background:

  • Dilated cardiomyopathy (DCM) poses a high risk for left ventricular (LV) thrombus.
  • The left atrial appendage (LAA) is a potential, yet understudied, site for thrombus formation in DCM patients.

Purpose of the Study:

  • To investigate the association between LV dimensions and left atrium/LAA size.
  • To determine the incidence of spontaneous echo contrast (SEC) and thrombus in the LV, left atrium, and LAA.
  • To compare these findings in patients with and without enlarged LV dimensions.

Main Methods:

  • Prospective echocardiographic study of 45 patients with DCM.
  • Patients categorized into enlarged LV (n=19) and normal LV (n=26) groups.
  • Echocardiographic parameters included LV dimensions, ejection fraction, left atrial diameter, LAA maximal area, and SEC/thrombus detection.

Main Results:

  • Enlarged LV group showed significantly increased LV end-diastolic diameter and reduced ejection fraction.
  • Maximal LAA area was significantly greater in the enlarged LV group (4.9 cm² vs. 3.3 cm²).
  • Thrombus frequency in the LAA was significantly higher in the enlarged LV group (36.8% vs. 7.7%).

Conclusions:

  • Patients with dilated LV dimensions exhibit larger LAA.
  • A dilated LV is associated with an increased risk of thrombus formation within the LAA.
  • The LAA should be considered a significant site for thrombus evaluation in dilated cardiomyopathy.
Abstract

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