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Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
07:41

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

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Resolution of left atrial spontaneous echocardiographic contrast after percutaneous mitral valvuloplasty:

D Y Leung1, I W Black, G B Cranney

  • 1Department of Cardiovascular Medicine, Prince Henry Hospital, Sydney, Australia.

American Heart Journal
|January 1, 1995
PubMed

Insights

Percutaneous transseptal mitral valvuloplasty (PTMV) often resolves left atrial spontaneous echocardiographic contrast (SEC), a marker of stroke risk in mitral stenosis patients. This resolution, linked to improved valve area, suggests PTMV may reduce thromboembolic events.

Area of Science:

  • Cardiology
  • Echocardiography
  • Interventional Cardiology

Background:

  • Left atrial spontaneous echocardiographic contrast (SEC) is a significant indicator of thromboembolic risk in patients diagnosed with mitral stenosis.
  • Understanding factors influencing SEC and its resolution is crucial for managing patient outcomes.

Purpose of the Study:

  • To investigate the impact of percutaneous transseptal mitral valvuloplasty (PTMV) on left atrial spontaneous echocardiographic contrast (SEC) in patients with mitral stenosis.
  • To identify predictors for the resolution of SEC following PTMV.

Main Methods:

  • Transesophageal echocardiography was conducted on 88 mitral stenosis patients one day before and three months after PTMV.
  • Echocardiographic parameters, including SEC presence, valve area, and mitral regurgitation, were assessed and analyzed.

Main Results:

  • Before PTMV, 74% of patients exhibited SEC, associated with smaller valve area, older age, and atrial fibrillation.
  • PTMV significantly increased valve area. SEC resolved in 37 patients and persisted in 28 (32%) at three months.
  • A relative increase in valve area post-PTMV was the sole significant predictor for SEC resolution on multivariate analysis.

Conclusions:

  • PTMV effectively reduces left atrial spontaneous echocardiographic contrast in a majority of mitral stenosis patients.
  • The resolution of SEC following PTMV holds potential implications for decreasing thromboembolic risk in this patient cohort.

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