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Left Ventricular Dyssynchrony Predicts Left Main Coronary Artery Disease in Patients with Non-ST-Segment Elevation

Yueh-Juh Lin1, Kuo-Liong Chien2, Hsuan-Kuang Chen1

  • 1Department of Cardiology, En Chu Kong Hospital;

Acta Cardiologica Sinica
|April 29, 2016
PubMed

Insights

Left ventricular dyssynchrony assessed by 3D echocardiography independently predicts left main coronary artery stenosis in non-ST-segment elevation myocardial infarction patients. This noninvasive method aids diagnosis.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Diagnostic Tools

Background:

  • Left main coronary artery stenosis is a critical condition.
  • Non-ST-segment elevation myocardial infarction (NSTEMI) requires accurate risk stratification.
  • Left ventricular dyssynchrony may indicate underlying cardiac issues.

Purpose of the Study:

  • To investigate if left ventricular dyssynchrony predicts left main coronary artery stenosis.
  • To evaluate the utility of 3D echocardiography in identifying this stenosis.

Main Methods:

  • 100 NSTEMI patients underwent 3D echocardiography and coronary angiography.
  • Left ventricular dyssynchrony measured using standard deviation of time to minimal systolic volume.
  • Significant stenosis defined as ≥50% in left main or ≥70% in other major coronary arteries.

Main Results:

  • 3D echocardiography-derived dyssynchrony was an independent predictor of left main coronary artery stenosis (OR 1.2, p=0.04).
  • Optimal cutoff value of 8.86 predicted stenosis with 71.4% sensitivity and 89.2% specificity.
  • Logistic regression confirmed dyssynchrony as a significant predictor.

Conclusions:

  • 3D echocardiography assessment of left ventricular dyssynchrony is a useful noninvasive diagnostic tool.
  • This method can help identify left main coronary artery stenosis in NSTEMI patients.
  • Findings support the integration of dyssynchrony assessment in NSTEMI evaluation.
Abstract

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