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Updated: Jul 6, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
What is cardiac resynchronisation therapy and who will benefit?
Aparna Jaswal1, J Singh, M A Dar
1Department of Cardiac Pacing and Electrophysiology, Escorts Heart Instt. and Research Centre, Okhla Road, New Delhi.
Cardiac Resynchronisation Therapy (CRT) improves outcomes for severe heart failure patients. Ongoing research, including Tissue Doppler Imaging (TDI), aims to enhance CRT effectiveness by identifying more suitable candidates.
Area of Science:
- Cardiology
- Medical Technology
Background:
- Cardiac Resynchronisation Therapy (CRT) is a proven treatment for end-stage heart failure.
- Large randomized trials support CRT's benefits in improving symptoms, exercise capacity, quality of life, and survival.
- Despite its efficacy, some patients do not respond to CRT.
Purpose of the Study:
- To explore methods for improving Cardiac Resynchronisation Therapy (CRT) responder rates.
- To identify patients who may benefit from CRT beyond conventional indications.
- To highlight the role of Tissue Doppler Imaging (TDI) in patient selection for CRT.
Main Methods:
- Review of data from large randomized trials on Cardiac Resynchronisation Therapy (CRT).
- Discussion of ongoing research into novel patient selection strategies.
- Emphasis on the application of Tissue Doppler Imaging (TDI) techniques.
Main Results:
- CRT significantly improves clinical outcomes and survival in severe systolic heart failure.
- A subset of patients are identified as non-responders to CRT.
- Tissue Doppler Imaging (TDI) shows promise in identifying CRT candidates.
Conclusions:
- Cardiac Resynchronisation Therapy (CRT) is a valuable intervention for severe heart failure.
- Further research is needed to optimize patient selection and improve CRT response rates.
- Tissue Doppler Imaging (TDI) is emerging as a key tool for enhancing CRT efficacy.
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