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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
Long-term clinical response to cardiac resynchronisation therapy under a multidisciplinary model.
1Department of Cardiology, Austin Health, Melbourne, Victoria, Australia.
Internal Medicine Journal
|September 11, 2013
Summary
Optimal cardiac resynchronisation therapy (CRT) delivery in heart failure patients significantly improves response rates. A multidisciplinary approach focusing on precise left ventricular lead placement and device optimization is key to successful outcomes.
Area of Science:
- Cardiology
- Medical Devices
- Heart Failure Management
Background:
- Cardiac resynchronisation therapy (CRT) is a standard treatment for heart failure with systolic dysfunction.
- Predicting and improving patient response to CRT remains a clinical challenge.
Purpose of the Study:
- To evaluate the effectiveness of a multidisciplinary service model for optimizing CRT delivery and patient response.
- To identify predictors of successful CRT response.
Main Methods:
- Prospective enrollment of 435 heart failure patients undergoing CRT over 5 years.
- Inclusion criteria: ejection fraction <35%, widened QRS or abnormal dyssynchrony index.
- Targeted left ventricular lead placement and regular device/clinical optimization with 3-monthly follow-ups.
Main Results:
- An 81% response rate to CRT was observed with a mean follow-up of 53 months.
- Significant improvements in ejection fraction (26% to 37%) and reduction in left ventricular end-diastolic diameter (68.6mm to 57.8mm).
- Predictors of response included sinus rhythm, high dyssynchrony index, and intrinsic electrical dyssynchrony >80 ms.
Conclusions:
- A multidisciplinary approach focusing on optimal left ventricular lead positioning and device optimization yields excellent CRT response rates.
- This model of care enhances patient management and treatment outcomes in heart failure.
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