Death might come in a flash or months. A cardiac arrest may leave a person in a vegetative state. That is a personal disaster, but a much more significant problem will affect loved ones.
No Communication
People must communicate their wishes to a hospital or healthcare facility. There may be treatments a person objects to, and these must be avoided. Conversely, a patient might want the procedure performed. Hospitals must keep unless healthcare providers are told to turn off life support systems, the machines keep running. That will cause a second disaster.