Cardiac resynchronization therapy

Area of Science:

• Cardiology
• Medical Imaging
• Biomedical Engineering

Background:

• Electrical and mechanical dyssynchrony are distinct clinical entities.
• Current noninvasive methods struggle to reliably identify mechanical dysfunction treatable with device therapy.

Purpose of the Study:

• To address the limitations in identifying mechanical dysfunction for device therapy.
• To emphasize a broader approach to assessing cardiac dyssynchrony.

Main Methods:

• Highlighting the PROSPECT (Predictors of Response to CRT) trial findings.
• Discussing the potential of real-time three-dimensional echocardiography and cardiac magnetic resonance imaging.
• Advocating for selective matching of imaging modality strengths to patient heterogeneity.

Main Results:

• The PROSPECT trial underscores the complexity of diagnosing mechanical dyssynchrony.
• No single noninvasive method currently offers consistent identification of correctable mechanical dysfunction.

Conclusions:

• A comprehensive and tailored approach is needed for assessing mechanical dyssynchrony.
• Maximizing and selectively applying advanced imaging modalities like 3D echo and cardiac MRI is crucial.
• Future research should focus on robust clinical studies matching imaging to patient populations.