At the moment, we do not provide medical assistance in dying to all types of patients. And you can be sure that not all doctors or nurse practitioners in other provinces will administer medical assistance in dying when there have been advance requests.
Situations like this are not easy, because you're dealing with someone who is no longer the same person as the one who completed an advance request. It is indeed a completely different person, one whose billions of neurons have been destroyed by dementia or by the disease. It's no longer the same person.
The disease can manifest itself in different ways. People can become aggressive, or as Senator Kutcher described, move in time to the music. In any event, medical assistance in dying will be provided to them because that's what they wanted. It will not necessarily be easy, but it can be carried out in a manner that is perfectly correct.