Prediction of Deterioration of Left Ventricular Function Using 3-Dimensional Speckle-Tracking Echocardiography in

Hyue Mee Kim1, In-Chang Hwang2, Yeonyee Elizabeth Yoon2

  • 1Division of Cardiology Department of Internal Medicine Chung-Ang University Hospital Chung-Ang University College of Medicine Seoul South Korea.

Insights

Two-dimensional global longitudinal strain (2D-GLS) predicts preserved left ventricular ejection fraction (LVEF) in patients with left bundle-branch block. Three-dimensional global circumferential strain (3D-GCS) predicts persistent LV dysfunction in those with reduced LVEF.

Area of Science:

  • Cardiovascular Imaging
  • Echocardiography
  • Cardiac Mechanics

Background:

  • Previous studies linked 2D-GLS to cardiovascular outcomes in left bundle-branch block (LBBB) patients.
  • The predictive utility of 3D speckle-tracking echocardiography in LBBB remains under-investigated.

Purpose of the Study:

  • To investigate the association between 2D and 3D strain parameters and longitudinal changes in left ventricular ejection fraction (LVEF) in patients with LBBB.
  • To determine the predictive value of different strain measures for maintaining or improving LVEF in LBBB patients.

Main Methods:

  • Retrospective analysis of 290 LBBB patients with serial echocardiograms.
  • Quantification of 2D-GLS, 3D-GLS, 3D-global circumferential strain (3D-GCS), 3D global radial strain, and 3D global area strain using speckle-tracking echocardiography.
  • Analysis of associations between strain parameters and follow-up LVEF, stratified by baseline LVEF (preserved ≥40% vs. reduced <40%).

Main Results:

  • In patients with preserved baseline LVEF, higher 2D-GLS was associated with maintaining LVEF (OR, 0.65; P<0.001).
  • In patients with reduced baseline LVEF, lower 3D-GCS was strongly associated with persistently reduced LVEF (OR, 0.61; P<0.001).
  • 14.9% of patients with preserved LVEF progressed to LV dysfunction, while 51.0% with reduced LVEF showed improved LV function.

Conclusions:

  • 2D-GLS is a valuable predictor of preserved LVEF maintenance in LBBB patients.
  • 3D-GCS offers significant predictive value for persistent LV dysfunction in LBBB patients with initially reduced LVEF.
  • 3D strain parameters, particularly 3D-GCS, provide complementary prognostic information in LBBB management.