Whether or not removing a feeding tube is euthanasia (frankly, it’s direct murder by deprival of food!), it is definitely wrong. Pope John Paul II addressed the matter directly in a speech 3/20/04 (around the time of the Terri Schiavo case).
wf-f.org/JPIILifeSustaining0304.html
“In particular, the term *permanent vegetative state *has been coined to indicate the condition of those patients whose “vegetative state” continues for over a year. Actually, there is no different diagnosis that corresponds to such a definition, but only a conventional prognostic judgment, relative to the fact that the recovery of patients, statistically speaking, is ever more difficult as the condition of vegetative state is prolonged in time.
However, we must neither forget nor underestimate that there are well-documented cases of at least partial recovery even after many years; we can thus state that medical science, up until now, is still unable to predict with certainty who among patients in this condition will recover and who will not.”
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The sick person in a vegetative state, awaiting recovery or a natural end, still has the right to basic health care (nutrition, hydration, cleanliness, warmth, etc.), and to the prevention of complications related to his confinement to bed. He also has the right to appropriate rehabilitative care and to be monitored for clinical signs of eventual recovery.
I should like particularly to underline how the administration of water and food, even when provided by artificial means, always represents a *natural means *of preserving life, not a
medical act. Its use, furthermore, should be considered, in principle, *ordinary *and
proportionate, and as such morally obligatory, insofar as and until it is seen to have attained its proper finality, which in the present case consists in providing nourishment to the patient and alleviation of his suffering.
The obligation to provide the “normal care due to the sick in such cases” (Congregation for the Doctrine of the Faith,
Iura et Bona, p. IV) includes, in fact, the use of nutrition and hydration (cf. Pontifical Council “Cor Unum”,
Dans le Cadre, 2, 4, 4; Pontifical Council for Pastoral Assistance to Health Care Workers,
Charter of Health Care Workers, n. 120). The evaluation of probabilities, founded on waning hopes for recovery when the vegetative state is prolonged beyond a year, cannot ethically justify the cessation or interruption of
minimal care for the patient, including nutrition and hydration. Death by starvation or dehydration is, in fact, the only possible outcome as a result of their withdrawal. In this sense it ends up becoming, if done knowingly and willingly, true and proper euthanasia by omission."