Organ transplants save lives, but the supply is short.
Transplants of animal organs might be an answer. Animal tissues have been used to benefit humans for years, but implanting an entire organ seems different. Both patient and family will be capable of making decisions. The patient will have exhausted the medical and surgical options, but his or her other organs will be sound. I see this first transplant as a bridge, buying time of weeks to months until a human heart is found.