Sodium Nitrite will be obtained from a commercial preparation (Hope Pharmaceuticals, Sodium Nitrite Injection USP (30mg/mL) NDC Number 60267-079-02) and the UPMC Pharmacy will prepare the formulations, which will be infused at three time points. First it will be infused into the preservation solution bag at the time of organ procurement from the donor, then to the allograft at the time of transplantation, and finally as a direct infusion into the organ recipient.