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Related Experiment Video

Updated: May 4, 2026

Use of Two Intracorporeal Ventricular Assist Devices As a Total Artificial Heart
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Left ventricular assist device outflow graft disconnection.

Hadi Daood Toeg1, Talal Al-Atassi1, Mark Cleland1

  • 1Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.

The Canadian Journal of Cardiology
|December 31, 2013
PubMed
Summary

Continuous-flow left ventricular assist devices rarely cause serious complications. This case series highlights outflow graft disconnection, leading to bleeding and ventricular tachycardia, diagnosable via chest X-ray.

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Area of Science:

  • Cardiology
  • Medical Devices
  • Surgical Complications

Background:

  • Continuous-flow left ventricular assist devices (CF-LVADs) like the Heartmate II are crucial for advanced heart failure management.
  • While generally safe, potential complications require ongoing vigilance and research.
  • Understanding device-specific failure modes is essential for patient safety.

Observation:

  • This case series details two patients experiencing significant adverse events.
  • These events included gastrointestinal bleeding and syncopal ventricular tachycardia.
  • Both patients had a Heartmate II device with an outflow graft bend relief disconnection.

Findings:

  • Outflow graft bend relief disconnection is a specific complication associated with continuous-flow left ventricular assist devices.
  • This disconnection can manifest clinically as bleeding and ventricular arrhythmias.
  • Diagnosis is achievable through standard chest roentgenography.

Implications:

  • Clinicians should consider outflow graft disconnection in patients with CF-LVADs presenting with unexplained bleeding or ventricular tachycardia.
  • Simple chest X-rays can aid in the early diagnosis of this mechanical complication.
  • Further research into the mechanical integrity and failure modes of LVAD components is warranted to improve long-term device performance and patient outcomes.