Related Experiment Video
Updated: Sep 13, 2026

Simultaneous Electrical and Mechanical Stimulation to Enhance Cells' Cardiomyogenic Potential
Published on: January 18, 2019
[Cardiac stimulation and heart insufficiency]
1Service de cardiologie, hôpital Pontchaillou, rue Henri-le-Guillou, 35033 Rennes, France. christine.alonso@wanadoo.fr
Insights
Biventricular pacing effectively treats dilated cardiomyopathy and heart failure by restoring normal heart rhythm. This cardiac resynchronization therapy improves patient outcomes and quality of life.
Area of Science:
- Cardiology
- Biomedical Engineering
Context:
- Dilated cardiomyopathy often involves conduction disorders, impairing heart function.
- Conventional pacing has limitations in addressing complex cardiac activation issues.
Purpose:
- To evaluate biventricular pacing for restoring normal cardiac activation in dilated cardiomyopathy.
- To assess the efficacy of biventricular pacing in improving heart failure symptoms and function.
Summary:
- Biventricular pacing aims to correct intraventricular asynchrony by simultaneously pacing both ventricles.
- Studies show acute hemodynamic improvements and chronic benefits in exercise tolerance and quality of life.
- Development of specialized tools has made left ventricular pacing safe and feasible.
Impact:
- Biventricular pacing is a viable treatment for drug-refractory heart failure with systolic dysfunction and conduction disorders.
- This therapy offers significant improvements for patients with dilated cardiomyopathy.
- Advancements in pacing technology enhance treatment safety and effectiveness.
Abstract:
Dilated cardiomyopathies are frequently associated with atrioventricular and intra ventricular conduction disorders. Such conduction disorders modify the cardiac activation sequence and impair left ventricular systolic and diastolic function. The aim of pacing in dilated cardiomyopathy is to restore a cardiac activation sequence as normal as possible. Conventional dual-chamber pacing was first proposed to treat drug-refractory heart failure but was soon replaced by multisite biventricular pacing. The aim of biventricular pacing is to correct intraventricular asynchrony by pacing the two ventricles simultaneously. Acute studies have shown that biventricular pacing could improve hemodynamic parameters in patients with dilated cardiomyopathy and severe intraventricular conduction disorders. More recently, chronic studies demonstrated a significant improvement in exercise tolerance and quality of life with biventricular pacing in patients with drug-refractory heart failure and with intraventricular conduction disorders. To safely pace the left ventricle specific materials and tools had to be developed. With those developments, biventricular pacing is now a feasible and safe technique. Regarding the results of several clinical studies, biventricular pacing could now be proposed to treat patients with drug-refractory heart failure in the setting of chronic left ventricular systolic dysfunction and with major intraventricular conduction disorders.
Related Concept Videos
Mechanism of Cardiac Arrhythmias
Heart Failure Drugs: Inotropic Agents
Imbalances in Cardiac Output
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...
Heart Failure II: Pathophysiology
Cardiomyopathy II: Dilated Cardiomyopathy
Cardiomyopathy III: Hypertrophic Cardiomyopathy

