This is a prospective, pilot trial to evaluate the safety and effectiveness of The Paragonix SherpaPak™ Cardiac Transport System ("SherpaPak CTS") in transportation of cardiac allografts recovered from donors after circulatory death with thoracoabdominal normothermic regional perfusion (TA-NRP). SherpaPak™ CTS is an ultraportable hypothermic preservation and transport system that has been approved by United States Food \& Drug Administration (FDA) for clinical use in heart transplantation.
The investigators will accept donors between the ages of 18 and 49 without any known history of coronary artery disease, insulin dependent diabetes, or long-term smoking (\>20 pack/years) and normal baseline cardiac function (EF\>50) assessed with transthoracic echocardiogram. Donors will be selected and matched to the recipients based on standard criteria (blood group, cross-match, size match, and clinical stability). The current procedure of donation after circulatory death (DCD) and procurement follows a well-established course. After consent is obtained, the organs are allocated through United Network for Organ Sharing (UNOS). All organs will be recovered with protocolized UNMC DCD TA-NRP technique that involves reestablishment of blood flow in-situ after donor's circulatory arrest using portable venoarterial extracorporeal membrane oxygenation (VA-ECMO). Organs will be transported from a donor site to recipient center with the SherpaPak™ CTS. All organs will be transplanted at Nebraska Medicine. Recipients ("subjects") will be followed from transplant through one-year post-transplantation.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DEVICE_FEASIBILITY
Masking
NONE
Enrollment
5
Transportation of cardiac allografts in a device maintaining constant optimal temperature to minimize freezing tissue injury
University of Nebraska Medical Center
Omaha, Nebraska, United States
Primary Graft Dysfunction (PGD)
PGD will be classified according to International Society for Heart and Lung Transplantation (ISHLT) classification into: PGD-LV Grade 1 (LVEF ≤ 40% by echocardiography, or Hemodynamics with RAP \> 15 mm Hg, PCWP \> 20 mm Hg, CI \< 2.0 L/min/m2 (lasting more than 1 hour) requiring low-dose inotropes); PGD-LV Grade 2 (I. One criteria from the following: Left ventricular ejection fraction ≤ 40%, or Hemodynamic compromise with RAP \> 15 mm Hg, PCWP \> 20 mm Hg, CI \< 2.0 L/min/m2, hypotension with MAP \< 70 mm Hg (lasting more than 1 hour) II. One criteria from the following: High-dose inotropes-Inotrope score \>10, or Newly placed IABP (regardless of inotropes)); PGD-LV Grade 3 ( Dependence on left or biventricular mechanical support including ECMO, LVAD, BiVAD, or percutaneous LVAD. Excludes requirement for IABP; PGD-RV (I. Hemodynamics with RAP \> 15 mm Hg, PCWP \< 15 mm Hg, CI \< 2.0 L/min/m2, II. TPG \< 15 mm Hg and/or pulmonary artery systolic pressure \< 50 mm Hg, III. Need for RVAD)
Time frame: 72 hours
Need for cardioversion or pacing to restart transplanted heart
Need for cardioversion or pacing to restart transplanted heart
Time frame: 72 hours
Vasoactive-inotropic score (VIS)
The vasoactive-inotropic score (VIS) will be calculated as a weighted sum of all administered inotropes and vasoconstrictors, reflecting pharmacological support of the cardio-vascular system. Formula for VIS calculation: dopamine dose (µg/kg/min) + dobutamine dose (µg/kg/min) + 100 x epinephrine dose (µg/kg/min) + 100 x norepinephrine dose (µg/kg/min).
Time frame: 24, 48, and 72 hours
Duration of vasoactive-inotropic support in days
Duration of vasoactive-inotropic support in days
Time frame: 1 year
Intensive Care Unit & Hospital length of stay in days
Intensive Care Unit \& Hospital length of stay in days
Time frame: 1 year
Survival at discharge
Survival at discharge 30-day, 90-day, 1-year
Time frame: 1 year
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