Identifying practical clinical problems in active euthanasia: A systematic literature review of the findings in countries where euthanasia is legal.

Multiple ambiguous conditions that are open to interpretation can result in a "slippery slope phenomenon." An insufficient guarantee of voluntariness violates the principle of respect for autonomy, which is the underlying justification for euthanasia. In cases of euthanasia due to mental anguish, a distinction between a desire for death caused by psychological pain alone prompted by mental illness and a desire for death caused by mental symptoms prompted by physical illness is essential. Conscientious objection should remain an option because of the heavy burden placed on doctors who perform euthanasia. Noncompliance by medical professionals due to ignorance and conflicts regarding euthanasia is contrary to procedural justice.