What question did this study set out to answer?

The aim is to evaluate the importance of CRT in managing electrical dyssynchrony in heart failure.

January 10, 2026Journal of Arrhythmia0 citationsOpen Access

Cardiac Resynchronization Therapy: Reconsidering Its Essence as a Treatment for Electrical Dyssynchrony in Heart Failure

MOMichio OganoShizuoka Medical Center YIYu‐ki IwasakiNippon Medical School JTJun TanabeShizuoka Medical Center

Key Result

Early implantation of cardiac resynchronization therapy can prevent irreversible remodeling in heart failure patients with electrical dyssynchrony.

Key Points

The aim is to evaluate the importance of CRT in managing electrical dyssynchrony in heart failure.
Assessment of QRS morphology and duration to determine electrical dyssynchrony.
Analysis of patient outcomes with early CRT implantation and drug therapy optimization.
Early CRT implantation helps prevent irreversible heart remodeling.
CRT is essential for managing heart failure in appropriate patients.

Structured PICO

Intervention

Cardiac resynchronization therapy (CRT)

CRT efficacy depends on both the quality and quantity of electrical dyssynchrony, requiring individualized patient selection and optimal left ventricular lead positioning.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

ABSTRACT Cardiac resynchronization therapy (CRT) essentially targets electrical dyssynchrony, one of the key drivers in heart failure (HF). Its efficacy depends on both the quality (QRS morphology) and quantity (QRS duration) of dyssynchrony, requiring individualized patient selection. While drug therapy for HF has a limited effect on this substrate, early implantation of CRT can prevent irreversible remodeling and facilitate optimization of medical therapy. CRT should be recognized as an essential component within a comprehensive strategy for HF management in patients with appropriate indications.

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