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Related Experiment Videos

[Cardiac resynchronization therapy].

M Block1, K Adler, J Brömsen

  • 1Stiftsklinik Augustinum, München. block@med.augustinum.de

MMW Fortschritte Der Medizin
|September 27, 2005
PubMed
Summary
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Biventricular pacemakers resynchronize heart contractions in patients with severe cardiac insufficiency and left bundle branch block. This therapy improves cardiac output, functional capacity, and reduces mortality.

Area of Science:

  • Cardiology
  • Biomedical Engineering

Context:

  • Severe cardiac insufficiency often presents with diminished left ventricular contraction and left bundle branch block.
  • Ventricular asynchrony in these patients reduces cardiac output.

Purpose:

  • To describe the use of biventricular pacemakers for cardiac resynchronization therapy.
  • To outline the implantation of electrodes for simultaneous ventricular stimulation.

Summary:

  • Biventricular pacing involves placing electrodes in the right ventricle and on the left ventricular lateral wall.
  • Simultaneous stimulation of early and late activated ventricular walls corrects asynchronous contraction.

Impact:

  • This therapy typically results in immediate blood pressure increase and enhanced functional capacity.

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  • Patients experience an average improvement of half an NYHA class and a 4% reduction in yearly mortality.