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[Biomechanical heart and cardiovascular support]

R Lange1, S Hagl

  • 1Abt. Herzchirurgie, Chirurgische Universitätsklinik, Heidelberg.

Zentralblatt Fur Chirurgie
|January 1, 1996
PubMed
Summary

Skeletal muscle can be adapted for cardiac support through electrical stimulation, overcoming fatigue. This technique, cardiomyoplasty, shows promise for improving patient symptoms and advancing circulatory support research.

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Surgery
  • Muscle Physiology

Context:

  • Early surgical attempts to use skeletal muscle for myocardial repair and blood flow enhancement were limited by muscle fatigue.
  • Discoveries in muscle physiology revealed "functional plasticity" through chronic electrical stimulation, inducing fatigue resistance.
  • This fatigue resistance is crucial for utilizing skeletal muscle in continuous circulatory support applications.

Purpose:

  • To explore the potential of skeletal muscle for biomechanical cardiac support.
  • To investigate the efficacy of chronic electrical stimulation in rendering skeletal muscle fatigue-resistant for circulatory assistance.
  • To review experimental techniques like skeletal muscle ventricles, counterpulsation, and cardiomyoplasty for heart support.

Summary:

  • Chronic electrical stimulation transforms skeletal muscle, making it fatigue-resistant and suitable for biomechanical cardiac support.
  • Techniques include skeletal muscle ventricles, counterpulsation, and cardiomyoplasty, with ventricular cardiomyoplasty being the first clinical application.
  • Clinical studies indicate cardiomyoplasty significantly improves patient symptoms, despite modest hemodynamic changes, highlighting its therapeutic potential.

Impact:

  • Cardiomyoplasty has spurred significant scientific interest in skeletal muscle-based circulatory support.
  • Further research into experimental techniques and close collaboration between researchers and clinicians are vital for progress.
  • International research efforts are expected to yield substantial advancements in skeletal muscle circulatory support technologies.

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