Intensive Care and the opinion of jurists and practitioners about the truth death

Among the questions that Islamic jurisprudence is responsible for responding to it, the legal status of patients in intensive care. One of this situation, a person suffering brain death is resuscitated by devices. In this situation when the person connected to devices resuscitation devices, the breathing system and blood circulation is working. In this situation if the dead person knew or should the legal terms the difference between life and death medical, legal, assume that the person is still alive and he/she applied to the provisions of the alive.
Considering on religious teachings, should not a patient suffering be too long because of agony. If the doctor is disappointed about recovery, the patient will be allowed to separate protective devices. But as long as we do not have certainty on the separation of the soul from the body, Cannot be sentenced to death and the current punishments such as Inheriting. But if patients likely are treated and untreated is equal, separating the patient from supporting devices will not be permitted until to point of despair.