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Tissue Doppler imaging and left ventricular dyssynchrony in heart failure
1Research Division, St. Paul Heart Clinic, 255 North Smith Avenue, Ste. 100, St. Paul, MN 55102, USA.
Journal of Cardiac Failure
|March 8, 2006
Summary
Tissue Doppler imaging (TDI) quantifies mechanical dyssynchrony in heart failure patients. This technique helps select candidates for cardiac resynchronization therapy (CRT) and optimize settings for improved outcomes.
Area of Science:
- Cardiology
- Medical Imaging
- Heart Failure Management
Background:
- Electrical dyssynchrony has been a primary criterion for cardiac resynchronization therapy (CRT) eligibility.
- Emerging evidence suggests mechanical dyssynchrony is a more significant factor for CRT selection.
Purpose of the Study:
- To review Tissue Doppler imaging (TDI) techniques for quantifying mechanical dyssynchrony.
- To discuss the role of TDI in patient selection and optimization for CRT.
Main Methods:
- Tissue tracking
- Tissue velocity imaging
- Tissue synchronization imaging
- Strain analysis
Main Results:
- TDI is a valuable tool for measuring mechanical dyssynchrony in advanced heart failure.
- Different TDI techniques offer distinct advantages and disadvantages for dyssynchrony assessment.
- Improved patient selection for CRT is anticipated with clinical TDI integration.
Conclusions:
- TDI shows promise in enhancing the selection of patients likely to benefit from CRT.
- TDI may aid in optimizing pacemaker settings for non-responders.
- Further research is ongoing to define TDI's definitive role in heart failure management.
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