Predictors for Super-Responders in Cardiac Resynchronization Therapy.
Radu Gabriel Vătășescu1,2, Georgică Costinel Târtea3,4, Corneliu Iorgulescu2
1Department of Cardiology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
American Journal of Therapeutics
|January 17, 2024
Summary
Optimal fusion (OPT) pacing predicts cardiac resynchronization therapy (CRT) super-response, alongside nonischemic cardiomyopathy. This finding is crucial for improving CRT outcomes in heart failure patients.
Area of Science:
- Cardiology
- Medical Devices
- Heart Failure Management
Background:
- Predicting patient response to cardiac resynchronization therapy (CRT) is vital for optimizing heart failure treatment.
- Identifying super-responders, who exhibit significant improvement, can enhance therapeutic efficacy.
Purpose of the Study:
- To identify predictors of super-response in patients undergoing CRT.
- To compare the effectiveness of different CRT pacing strategies.
Main Methods:
- A retrospective observational study included 622 heart failure patients treated with CRT.
- Super-responders were defined by specific improvements in left ventricular ejection fraction (LVEF) and New York Heart Association functional class.
Main Results:
- The highest super-responder rate (41.91%) was observed with optimal fusion (OPT) left ventricle-only pacing compared to biventricular (BiV) pacing (9.81%).
- Nonischemic cardiomyopathy was a predictor in both OPT and BiV groups.
- Narrower QRS post-implantation predicted super-response in the BiV group.
Conclusions:
- OPT CRT programming is an independent predictor of super-response to CRT.
- Nonischemic cardiomyopathy is also a key predictor for CRT super-response.
