Under family, friends, pets etc.
"
What if I have no one to come with me to Pegasos?
For legal reasons, everyone who comes for a VAD at Pegasos must have someone known to them who is able to confirm the patient's identity after VAD for the Swiss authorities.
Traveling alone: This must remain the absolute exception. The regulations and requirements are extremely elaborate."
And then under
What happens after I die?
"After your VAD, Pegasos will call the authorities who will attend our clinic. These officials will be friendly and very sensitive to the fact that you have just lost someone you loved very much.
Once the formalities are complete, the accompanying persons receive their passports back and are free to leave."
I mean you could contact them yourself directly to confirm, but I take this to mean you need someone with you.