Related Experiment Video
Updated: Aug 9, 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
Reverse remodelling in heart failure with cardiac resynchronisation therapy
1Division of Cardiology, Department of Medicine, University of Pennsylvania Medical Center, Room 9017, Gates Pavilion, 3400, Spruce Street, Philadelphia, PA 19104, USA. suttonm@mail.med.upenn.edu
Insights
Cardiac resynchronisation therapy (CRT) effectively treats severe systolic heart failure by reversing adverse left ventricular (LV) remodelling. This innovative treatment improves heart function and prognosis in patients with chronic heart failure.
Area of Science:
- Cardiology
- Heart Failure Research
- Medical Device Technology
Background:
- Systolic heart failure is characterized by progressive left ventricular (LV) remodelling, leading to poor prognosis.
- LV remodelling involves dilatation, reduced contractile function, and altered cavity shape, triggered by various factors.
- Current treatments focus on slowing or halting this detrimental remodelling process.
Purpose of the Study:
- To review the application of cardiac resynchronisation therapy (CRT) in managing chronic, severe, systolic heart failure.
- To explore the concept of "reverse remodelling" as a therapeutic goal in heart failure.
- To evaluate CRT's efficacy in achieving reverse remodelling and improving LV function.
Main Methods:
- Review of existing literature on cardiac resynchronisation therapy and heart failure.
- Analysis of studies investigating left ventricular remodelling in systolic heart failure.
- Examination of data correlating CRT with changes in LV structure and function.
Main Results:
- Cardiac resynchronisation therapy (CRT) is identified as a novel and effective treatment for systolic heart failure.
- CRT is associated with significant "reverse remodelling" of the left ventricle.
- This reverse remodelling involves partial reversal of LV dilatation and improved contractile function.
Conclusions:
- Cardiac resynchronisation therapy (CRT) offers a promising therapeutic approach for severe systolic heart failure.
- CRT facilitates reverse remodelling, counteracting the adverse effects of LV remodelling.
- The findings support CRT as a valuable intervention for improving outcomes in heart failure patients.
Abstract:
This review examines the use of cardiac resynchronisation therapy (CRT) for chronic, severe, systolic heart failure. Left ventricular (LV) remodelling is the final common pathway of systolic heart failure and portends a poor prognosis. It is characterised by progressive LV dilatation, deterioration of ventricular contractile function and distortion of LV cavity shape. The LV remodelling process is triggered by prolonged pressure or volume overload, loss of contracting myocytes from myocardial infarction, genetic abnormalities of contractile proteins or exposure to cardiotoxic agents. Current therapeutic strategies for systolic heart failure aim to slow or halt the remodelling process. "Reverse remodelling" is a relatively new concept, where progressive LV dilatation and deterioration in contractile function are not simply arrested, but partially reversed. Cardiac resynchronisation therapy is a novel and effective treatment for systolic heart failure, and is associated with reverse remodelling of the LV.
More Related Videos
Related Concept Videos
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Heart Failure VI: Adjunct Therapies
Cardiomyopathy II: Dilated Cardiomyopathy
Heart Failure V: Medical Management
Cardiomyopathy V: Interprofessional Care
Cardiomyopathy III: Hypertrophic Cardiomyopathy

