The Organ Care System (OCS) is a medical device designed by Transmedics to allow donor organs to be maintained for longer periods of time prior to transplant. The system mimics the elements of human physiology and keeps organs in an environment and temperature similar to the human body. The system allows for organ preservation that last longer than the standard organ preservation method of putting organs on ice, static cold storage, which can cause cold ischemia. When put on ice, organs begin to deteriorate about three to four hours after retrieval.[1][2] On the other hand, the Paragonix SherpaPak Cardiac Transport System can offer uniform cooling by suspending the donor heart in a preservation solution, and provides continuous temperature monitoring.[3]