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Related Experiment Video

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Real-world experience with leadless cardiac pacing.

Vaibhav R Vaidya1, Mingyan Dai1, Samuel J Asirvatham1,2

  • 1Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota.

Pacing and Clinical Electrophysiology : PACE
|January 12, 2019
PubMed
Summary

Leadless cardiac pacing (LCP) shows comparable procedural safety to transvenous pacemakers (TVP). LCP, particularly the Micra device, demonstrated reduced risks of endocarditis, revision, and tricuspid regurgitation.

Keywords:
endocarditisleadless cardiac pacemakertransvenous pacemakertricuspid regurgitation

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Devices

Background:

  • Leadless cardiac pacing (LCP) represents an innovative approach to permanent cardiac pacing.
  • Comparative outcome data between LCP and traditional transvenous pacemakers (TVP) are crucial for clinical decision-making.

Purpose of the Study:

  • To compare the procedural and post-procedural outcomes of leadless cardiac pacing (LCP) versus transvenous pacemakers (TVP).
  • To evaluate device-specific complications, longevity, and impact on tricuspid regurgitation.

Main Methods:

  • A retrospective analysis of patients who received LCP (Micra or Nanostim) between 2014-2017 at Mayo Clinic.
  • 1:1 age- and sex-matched controls receiving single-chamber transvenous ventricular pacemakers (TVP) were identified.
  • Statistical analyses were performed to compare complication rates, device revisions, endocarditis, longevity, and tricuspid regurgitation severity.

Main Results:

  • Both LCP and TVP groups achieved 100% successful implant rates with no significant difference in major or minor procedural complications.
  • The Micra LCP group showed significantly lower rates of device-related revision/extraction (0% vs. 5%) and device endocarditis (0% vs. 3%) compared to TVP.
  • LCP demonstrated superior estimated longevity (12.0 vs. 10.0 years) and a significantly lower incidence of worsening tricuspid regurgitation (0% vs. 19%).

Conclusions:

  • Leadless cardiac pacing (LCP) and transvenous pacemakers (TVP) exhibit similar procedural complication profiles.
  • The Micra LCP system offers advantages over TVP, including reduced rates of device revision, endocarditis, and tricuspid regurgitation.
  • LCP is associated with improved device longevity compared to traditional transvenous pacing systems.