Nicorandil ameliorates posttransplant dysfunction in cardiac allografts harvested from non-heart-beating donors

  • Makoto Mohri
  • Kotaro Suehiro
  • Shu Yamamoto
  • Hiroki Yamaguchi
  • Kozo Ishino
  • Shunji Sano


Objective: Warm ischemia is a major cause of cardiac allograft dysfunction in non-heart-beating donors (NHBDs). We evaluated the cardioprotective effects of nicorandil, and adenosine triphosphate-sensitive potassium channel opener, on the early posttransplant left ventricular (LV) function of hearts harvested from asphyxiated canine NHBDs.Methods: Hypoxic cardiac arrest was induced in 12 donor dogs. In 6, nicorandil was administered intravenously at 100 μg/kg+25 μg/kg/min after respiratory arrest and hearts were preserved with nicorandil-supplemented cardioplegic solution (nicorandil group). The remaining 6 did not receive nicorandil at any time during the experiment (control group). Hearts were weaned from cardiopulmonary bypass without inotropic support. In the control group, posttransplant cardiac indices and left ventricular end-systolic pressure (LVESP) decreased significantly, while LV max-dP/dt and Tau increased over pretransplant values. No differences were seen in parameters between pretransplant and posttransplant values in the nicorandil group. Posttransplant cardiac indices, LVESP, and LV max+dP/dt were higher in the nicorandil group than in controls, while posttransplant LV max-dP/dt in the nicorandil group was lower.Conclusions: Our results indicate that pretreatment with nicorandil during hypoxic perfusion before cardiac arrest and subsequent preservation with nicorandil-supplemented cardioplegia ameliorates early posttransplant LV dysfunction of hearts harvested from asphyxiated NHBDs.

Key words

non-heart-beating donor heart transplantation nicorandil 


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Copyright information

© Japanese Association for Thoracic Surgery 2002

Authors and Affiliations

  • Makoto Mohri
    • 1
  • Kotaro Suehiro
    • 1
  • Shu Yamamoto
    • 1
  • Hiroki Yamaguchi
    • 1
  • Kozo Ishino
    • 1
  • Shunji Sano
    • 1
  1. 1.Department of Cardiovascular SurgeryOkayama University Graduate School of Medicine and DentistryOkayamaJapan

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