If a person is in a coma for weeks already (so no point in waiting until the person is conscious again), or in a similar state of unconsciousness with no foreseeable change, can the Catholic [last rites](https://en.wikipedia.org/wiki/Last_rites#Catholic_Church) be given at the request of a Catholic family member? Or possibly a modification of the last rites? I'm thinking in particular not of the Anointing of the Sick (one of the several sacraments that are part of the Last Rites), but the Confession and the [Viaticum](https://en.wikipedia.org/wiki/Viaticum) . The main question is how can the unconscious participates in the [Viaticum rite](https://spvchurch.org/documents/2019/7/communion_to_the_sick.pdf) ? What exactly does the priest do when the person cannot even say "Amen" before receiving the host? How about the requirement that a Catholic should confess at least their mortal sins prior to communion, since the unconscious cannot do that? The *Wikipedia* entry mentions that sometimes the host was placed in the mouth of a person already dead. Is that what the priest will do in this case? What is the practice today with respect to someone who is terminally ill and is unconscious, or someone whom the family has agreed to disconnect the life support system? Is there a special modified *Viaticum* rite (as well as Confession rite) that the Vatican has approved in the case where the sick is unconscious? Or if there is no modified rites for Confession and Viaticum, is there a Vatican document that prescribe guidelines in the case of the unconscious?