Quantitative Dobutamine Stress Echocardiography Using Speckle-Tracking Analysis versus Conventional Visual Analysis

Emer Joyce1, Georgette E Hoogslag1, Ibithal Al Amri1

  • 1Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.

Insights

Two-dimensional speckle-tracking strain echocardiography effectively detects significant coronary artery disease after ST-segment elevation myocardial infarction. This method offers a feasible and promising approach for post-STEMI patient assessment.

Area of Science:

  • Cardiology
  • Echocardiography
  • Medical Imaging

Background:

  • Detecting residual ischemia after ST-segment elevation myocardial infarction (STEMI) using visual analysis during dobutamine stress echocardiography (DSE) is difficult.
  • Assessing significant coronary artery disease (CAD) post-STEMI requires accurate diagnostic tools.

Purpose of the Study:

  • To evaluate the feasibility and accuracy of 2D speckle-tracking strain DSE for detecting significant CAD in STEMI patients.
  • To compare strain analysis with traditional visual assessment in the post-STEMI setting.

Main Methods:

  • Retrospective analysis of 105 STEMI patients treated with primary PCI.
  • Measurement of left ventricular peak longitudinal systolic strain (PLSS) at rest and peak stress using 2D speckle-tracking echocardiography.
  • Correlation of strain changes (ΔPLSS) with coronary angiography findings (significant CAD defined as >70% diameter stenosis).

Main Results:

  • High analyzability of myocardial segments at rest (93%) and peak stress (92%).
  • Significant CAD was identified in 36% of patients.
  • Greater worsening in global PLSS (ΔPLSS) was observed in patients with significant CAD compared to those without (P < .001).
  • Optimal ΔPLSS cutoff (≥1.9%) showed 87% sensitivity and 60% accuracy for detecting significant CAD.

Conclusions:

  • 2D speckle-tracking strain analysis is feasible during DSE in post-STEMI patients.
  • This technique shows promise for accurately detecting significant angiographic CAD at follow-up.
  • Strain analysis offers a valuable, objective tool for risk stratification after STEMI.
Abstract

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