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Updated: Jun 4, 2026
06:22
Contractility Measurements on Isolated Papillary Muscles for the Investigation of Cardiac Inotropy in Mice
Published on: September 17, 2015
[Improving left ventricular contraction by stimulation during the absolute refractory period. Cardiac contractility
1Kardiologie, Herzzentrum Brandenburg in Bernau, Bernau, Deutschland. c.butter@immanuel.de
Herzschrittmachertherapie & Elektrophysiologie
|March 3, 2011
Summary
Cardiac contractility modulating (CCM) signals enhance heart contraction in heart failure patients. This electrical therapy may offer a new treatment option by normalizing gene expression and improving cardiac function.
Area of Science:
- Cardiology
- Biomedical Engineering
- Molecular Biology
Context:
- Heart failure is a condition characterized by impaired left ventricular contraction.
- Current treatments for heart failure have limitations, especially for patients with normal QRS duration.
- Cardiac contractility modulation (CCM) is an emerging electrical therapy.
Purpose:
- To investigate the effects of CCM signals on left ventricular contractility.
- To explore the molecular mechanisms underlying CCM treatment in heart failure.
- To evaluate CCM as a potential therapeutic option for heart failure patients.
Summary:
- CCM signals, delivered during the absolute refractory period, non-excitably enhance left ventricular contraction strength.
- Studies in animals and humans with heart failure demonstrate CCM's efficacy in improving exercise tolerance and quality of life.
- Myocardial biopsy studies reveal that CCM normalizes gene expression in heart failure, including calcium cycling proteins.
Impact:
- CCM shows promise as an alternative or additional electrical treatment for heart failure patients with normal QRS duration.
- This therapy could be delivered via a pacemaker, potentially without antibradycardiac or antitachycardiac functions.
- CCM may represent a novel approach to managing heart failure by targeting molecular pathways and improving cardiac performance.
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