The sedatives were for Lucas to lie asleep and still during his scans. Later on, Lucas would amaze the doctors by being able to lie perfectly still without sedatives for up to 45 minutes at a time while they scanned him.
A fund has been created to keep Lucas' spirit alive. Donations will be used to support children's medical treatment in honor of Lucas.
Alternatively, checks can be sent to the following address:
Lucas Tran Purple Memorial Fund
PO Box 50021
Palo Alto, CA 94303
USA
100% of the amount that is received in the fund will be used to support children's medical treatment. None of it is used to pay administrative overhead, salaries, etc.
If you would like to read more about Lucas' story, a blog maintained by his parents can be found here.