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A New Multi-Mode Perfusion System for Ex Vivo Heart Perfusion Study

  • Systems-Level Quality Improvement
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Abstract

Ex vivo heart perfusion has been shown to be an effective means of facilitating the resuscitation and assessment of donor hearts for cardiac transplantation. Over the last ten years however, only a few ex vivo perfusion systems have been developed for this application. While results have been promising, a system capable of facilitating multiple perfusion strategies on the same platform has not yet been realized. In this paper, the design, development and testing of a novel and modular ex vivo perfusion system is described. The system is capable of operating in three unique primary modes: the traditional Langendorff Mode, Pump-Supported Working-Mode, and Passive Afterload Working-Mode. In each mode, physiological hemodynamic parameters can be produced by managing perfusion settings. To evaluate heart viability, six experiments were conducted using porcine hearts and measuring several parameters including: pH, aortic pressure, lactate metabolism, coronary vascular resistance (CVR), and myocardial oxygen consumption. Pressure-volume relationship measurements were used to assess left ventricular contractility in each Working Mode. Hemodynamic and metabolic conditions remained stable and consistent across 4 h of ex vivo heart perfusion on the ex vivo perfusion system, validating the system as a viable platform for future development of novel preservation and assessment strategies.

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Authors and Affiliations

  1. Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON, Canada

    Liming Xin, Bryan Gellner & Jean Zu

  2. Department of Cardiovascular Surgery, Toronto General Hospital, University Health Network, Toronto, ON, Canada

    Liming Xin, Roberto Vanin Pinto Ribeiro, David Banner, Vivek Rao & Mitesh V. Badiwala

  3. Institute of Medical Science, University of Toronto, Toronto, ON, Canada

    Roberto Vanin Pinto Ribeiro & Vivek Rao

  4. Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, Toronto, ON, Canada

    Giulia Maria Ruggeri & Massimiliano Meineri

  5. Faculty of Medicine, University of Toronto, Toronto, ON, Canada

    Massimiliano Meineri, Vivek Rao & Mitesh V. Badiwala

Authors
  1. Liming Xin
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  2. Bryan Gellner
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  3. Roberto Vanin Pinto Ribeiro
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  4. Giulia Maria Ruggeri
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  5. David Banner
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  6. Massimiliano Meineri
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  7. Vivek Rao
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  8. Jean Zu
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  9. Mitesh V. Badiwala
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Corresponding author

Correspondence to Liming Xin.

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This article is part of the Topical Collection on Systems-Level Quality Improvement

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Xin, L., Gellner, B., Ribeiro, R.V.P. et al. A New Multi-Mode Perfusion System for Ex Vivo Heart Perfusion Study. J Med Syst 42, 25 (2018). https://doi.org/10.1007/s10916-017-0882-5

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  • DOI: https://doi.org/10.1007/s10916-017-0882-5

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